Sciencemadness Discussion Board

Mystery Glassware Identification Thread

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PirateDocBrown - 15-12-2017 at 16:36

That kind of funnel/flask is an iodine flask. It's meant to be used to determine the degree of unsaturation of fats and oils.

j_sum1 - 15-12-2017 at 16:45

Quote: Originally posted by PirateDocBrown  
That kind of funnel/flask is an iodine flask. It's meant to be used to determine the degree of unsaturation of fats and oils.

Ok Cool. Pity I broke it.

Still, I now have an erlenmeyer with a funnel on it and a ground neck that doesn't fit anything I have. I think it will get some use.

The Volatile Chemist - 15-12-2017 at 17:57

Quote: Originally posted by j_sum1  
Exhibit B

No ground glass -- I guess it is designed for rubber stoppers. I guess you could add a straight tube and you would have a liebig. But is that the intent? Every application I have thought of comes just shy of being properly useful.
From what I've seen in Vogel's 3rd, that is indeed the outside half of a liebig condenser held together by corks.

j_sum1 - 15-12-2017 at 19:55

Ok then. It looks like it will be a pain to put the second cork in place. But certainly usable -- if I have a length of glass tube the right diameter.
I might just have to do some experiments where I go classical on the glassware.

Unknown glasware

dan.vlad - 5-1-2018 at 02:55



Maybe somebody know something about this..

30122014102.JPG - 2.2MB 30122014106.JPG - 1.9MB 30122014111.JPG - 2.1MB

j_sum1 - 5-1-2018 at 03:14

1 is some kind of jacketed reaction vessel.
3 is a bit like a Davies condenser -- it is a double surfacfe in the same fashion. But instead of Graham-style coils like a regular davies, it has the bulbs of an allihn. I think there comes a point where a condenser is a condenser and there is not always a huge benefit in making the design more complex.
2 also appears to be a condenser arrangement but looks like it has been put together for a specific purpose I can't realy imagine what it might be. The pear shaped vessel where condensation occurs looks to be rather inefficient. I am not sure why there is the unusual fitting at the end. Looks like it is for a rather large flask.

My guesses anyway.

There is a theread specifically for glassware questions. Perhaps a mod will be kind enough to merge this with it.

Radium212 - 5-1-2018 at 05:04

The outer jacket in 1 may be a vacuum, so perhaps it was a vessel for a reaction where the temperature had to be kept constant?

SWIM - 5-1-2018 at 14:50

Kinda looks like a UV reactor, but not quite. (One on the left)

Do those 3 necks all access the same chamber, or do they access both the inside and the jacket adjacent?

NeonPulse - 7-1-2018 at 21:27

Today I happened to come across a box of glass in a second hand charity store, eyeing the contents I was thrilled to find several Burettes, Pipet tea, flasks, a Mari-jet water aspirator, loads of borosilicate tubing and solid rods. Got it at a good price 40$. One burette alone is that much so a bargain. There was one thing that stood out as unusual. It is a long glass tube 1m long with removable adapters at each end one side has hose barbs and the other was an adjustable spray nozzle. The whole box was donated by a retired chemist so it must have some kind of use in chemistry. Not sure what though.

A54A47A1-3CAF-4D47-8932-A2DFDBD68E9E.jpeg - 1.6MB C6EA4FF2-73DB-477F-AD53-34DF884D43A0.jpeg - 1.6MB 125AE425-E0A9-40DE-A238-5440EA80A401.jpeg - 1.2MB

[Edited on 8-1-2018 by NeonPulse]

FCC82F34-848C-433F-93FF-263D2FE3D490.jpeg - 1.7MB

Harristotle - 8-1-2018 at 00:04

It is a chromatography column, made by Pharmacia
Often filled with Sephadex/Sephacryl size exclusion or ion exchange resins.
Biochemists love them !

SWIM - 11-1-2018 at 15:11

This thing really reminds me of a Mcleod gauge, but not quite.
Is this just another form of vacuum gauge, or something else?




mcleodgage.jpg - 290kB

dan.vlad - 19-1-2018 at 06:21

Quote: Originally posted by SWIM  
Kinda looks like a UV reactor, but not quite. (One on the left)

Do those 3 necks all access the same chamber, or do they access both the inside and the jacket adjacent?



Those 3 necks all acces the same chamber !
This is only one chamber ,with 2 jacket

Dr.Bob - 23-1-2018 at 18:29

Here is an odd thing that I have, not sure what it for, it is a non-equilibrated addition funnel with a water coil going through it. Not sure if intended as a way to heat or cool something being added to a flask, or maybe a weird condenser that could be used as part of a Dean Stark type trap or what. It is also in 29/42 both ends.

If anyone can tell me what it is for for, they can buy it cheap. :-)

I have a lot of stuff like this that I am slowly trying to figure out what it is, so I can try to sell it or find it a good home. I'm slowly trying to catch up with some of the pile of stuff, there is so much odd stuff here.



20180122_210240smaller.JPG - 210kB

j_sum1 - 23-1-2018 at 23:37

Maybe an addition funnel for something like phenol with a melting point in the slightly-above-room-temperature zone? At least that's what I would use it for.

Does not seem like a dumb idea to me.

The Volatile Chemist - 24-1-2018 at 20:09

It was...a custom piece for someone who couldn't afford to buy a dimroth and another addition funnel...!
It looks like it's 29/42 or 29/ something - if it were a 24/ piece I'd look into buying it...

Some odd glassware in an auction lot with bidding soon to be expired

RogueRose - 24-2-2018 at 04:44

So I am looking at an auction lot and, as usually, the images look like they were taken with a 1992 cell phone, inside a sock as a filter. I just can't understand how about 70%+ of these major liquidation auctions (selling stuff to pay creditors) can't get clear pictures but they'll take 10 blurry pics of the same item when one clear pic would be better than the entire 10!

The original resolution of these pics is 480 x 320! IDK if a lower resolution is possible...

So I'm trying to identify what is in these pictures and some are pretty easy to identify but some are a little more ambiguous especially the last 2 pictures.
Top shelf looks like mostly erlenmeyer flasks, some with vacuum take-offs and some beakers. Bottom is volumetric flasks, grad cylinders, dessicant chamber, test tube rack & more flasks
a.jpg - 377kB

top shelf: More erlenmeyer flasks (250ml or maybe 400 or 500ml??)
Bottom shelf. Curious what is in the cardboard! some crystalization dishes, small beakers and flasks, a large beaker in the back (probably 2 - 3L and some nice parafilm. What is to the right of the cardboard boxes, they look like rullers but IDK why those would be there - is there something that is similar to this in chem equipment?
b.jpg - 405kB

The top shelf has a lot of long glassware which I'm not sure what it is at all, maybe volumetric pipettes? Suggestions here are greatly appreciated!
On the bottom shelf, the wrapped item in the back is impossible to distinguish but towards the left in the very back (not in circle) there looks to be a glass tube, maybe more pipettes. Then the device in the circle on the bottom.
c.jpg - 395kB

lots of lab stands and accessories and possibly some measured pumping dispensers. I have no experience with these and an wondering what value these have.
d.jpg - 306kB

j_sum1 - 24-2-2018 at 05:39

I think you have identified everything pretty well.
Photo three might be a power supply or magnetic stirrer or something analytical. Hard to tell from a grey box. That might be a ceramic mat or perhaps lab jack to the left of it.

Last photo looks like it might be something for automated titrations.

Vacuum desiccator alone is worth a bundle. If you can get tbis lot for a good price then grab it.

Cardie - 23-3-2018 at 12:22

Moin,
does anyone know what this is? Bought it from ebay with other glassware and i dont have a clue what it could be.


CharlieA - 23-3-2018 at 17:29

I saw these used in an apparatus for running a biochemical reaction that produced/or used some gas or other. I can't recall any more specifics about it (this was ca. 55-60 years ago and my memory fails me :D).

CharlieA - 24-3-2018 at 02:41

an analytic apparatus that employs a manometer to determine changes in the amount of gas produced or absorbed by a test sample kept at constant temperature in a flask of constant gas volume and is used especially in the study of cellular respiration and metabolism and of some enzymatic reactions (as fermentation)
Warburg Apparatus Medical Definition | Merriam-Webster ...
www.merriam-webster.com/medical/Warburg%20apparatus

This came to me as I got up this morning at 5 a.m.! I found this with a Google search. That also had some pictures of the apparatus.

RogueRose - 7-4-2018 at 03:08

I just got a few pieces in a lot that I'm not sure what they are.


IDK what the thing is on the bottom, I think it is a condenser of some kind. The part on the right (in pic) is the top and it is open so that maybe something can drip into it, fall to the bottom, then the liquid would flow up the curled tubing and out the side middle but it also has a port/connection (2nd from right in pic) that would allow to feed with tube or over-flow - maybe there needs to be a cap/lid then the coil would be sealed. The outer jacket has 3 ports the top two on each side and one on the bottom.
condensor like thing.jpg - 470kB

Have no clue. Was told it might be a "freeze dryer" it is very thick, has an inverted cone on the inside (could be used to fill with water liquid for cooling?) then the 4 female joints on the bottom and the bottom male joint bottom dead center.
dryer - large - 1.jpg - 288kB

dryer - large - 0.jpg - 208kB


dryer - large - 2.jpg - 88kB

I'm guessing this is just a hose manifold for either liquids or vacuum.
dryer - large - mannifold - 1.jpg - 237kB

This is very similar to the above unit but is smaller, has 3 female joints on the side and a female joint bottom dead center.
dryer - small - 1.jpg - 267kB


dryer - small - 2.jpg - 192kB

This is the view of above unit from top showing inverted cone. The larger one looks basically like this as well.
dryer - small - 3.jpg - 98kB

Bunch of odd pieces of glassware, most have many joints for liquid or vacuum.
glass thingies.jpg - 466kB


glass thingies 2.jpg - 338kB

Have absolutely no idea what this is. It's about 3ft tall. It does say "don't wash with organic solvent" because it the base and top screw cap are made of acrylic/polycarbonate and some other white plastic on top.
Buchler 0.jpg - 214kB


Buchler 1.jpg - 135kB


Buchler 2.jpg - 169kB

These are upside down, the bottom (in the pic) is open and can hold fluid. I think these look like cold traps somewhat
cold traps.jpg - 168kB

Not sure what the top item is. It looks like it has an aerator on the bottom or it is a pad, it screws into a bottle
Glass 1.jpg - 227kB

Maybe some kind of glass mortar & pestle. It's called a "glass homogenizer" but IDK if it is for liquids or solids.
glass pestel.jpg - 125kB

LearnedAmateur - 7-4-2018 at 05:23

Quote: Originally posted by RogueRose  

Maybe some kind of glass mortar & pestle. It's called a "glass homogenizer" but IDK if it is for liquids or solids.


It’s used to grind tissues for DNA/RNA extraction (and I presume other tissue studies), so you’re on track with the M&P idea. Doesn’t seem like it but they can fetch over £20-30 for both pieces! The actual name is a Dounce homogeniser, and you can get PTFE variants too.

[Edited on 7-4-2018 by LearnedAmateur]

Dr.Bob - 9-4-2018 at 07:40

Quote: Originally posted by RogueRose  

Maybe some kind of glass mortar & pestle. It's called a "glass homogenizer" but IDK if it is for liquids or solids.


I agree with Learned that they are tissue homogenizers. If anyone wants some, I have a box full of them somewhere. need to list on Ebay some day in my spare time, but there are so many different brands, sizes, and variations that it will take me a month to list them there. And I have no desire or need to homogenize anything, so I can't use them myself.

If anyone wants some, please do let me know. Any biochemists out there?

Vosoryx - 10-4-2018 at 14:58

Any ideas?
It's a a glass frit, but doesn't seem like a filter... maybe it's for filtering gases or something?

20180410_090227.jpg - 3.2MB

20180410_090030.jpg - 3.1MB

Thanks.

Brom - 10-4-2018 at 17:54

A friend of mine picked this up for me at a thrift shop type place for $6. It looks like a thistle tube with a stopcock but why the vacuum take off barb? Has any one seen or used one like this before?

20180410_074205.jpg - 1.1MB

Vosoryx

Sulaiman - 11-4-2018 at 00:25

It is an airstone for an aquarium, often for diffusing CO2 https://www.ebay.co.uk/itm/Clear-Glass-Carbon-Dioxide-Mainta...
I have similar https://www.ebay.co.uk/itm/Aquarium-Fish-Tank-CO2-Diffuser-G...

For chemistry, not aquarium, I pumped un-filtered air through mine and after a few hours the fritt was blocked, not checked why yet.

[Edited on 11-4-2018 by Sulaiman]

wg48 - 11-4-2018 at 00:25

Quote: Originally posted by Vosoryx  
Any ideas?
It's a a glass frit, but doesn't seem like a filter... maybe it's for filtering gases or something?
Thanks.


Looks like an aquarium bubbler

hqdefault.jpg - 22kB

TheNerdyFarmer - 4-5-2018 at 18:54

Hello all! This bundle of joy just came in the mail today and I have no idea what they are used for :D! I got the whole lot for 6 bucks (not including shipping) and I thought that was a pretty good deal. The thing that really got me excited was that one of the tubes was labeled "quartz" and the other "PYREX". All except #5 have fritted glass in them. The also all have an o-ring fitting on them. I would guess that these are some sort of gas drying/reaction tubes. Anyway, I look forward to what you guys have to say about them!

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j_sum1 - 4-5-2018 at 21:00

They are a bit weird and have definitely been made with a specific purpose in mind. Any of them could be used for scrubbing low volumes of gas. That's probably what I would use them for.

TheNerdyFarmer - 5-5-2018 at 05:21

I've thought about using them a reaction tubes. You know, like for making things like silicon tetrachloride, and various trimerization reactions. That's one reason I was excited about the quartz tube.

SWIM - 5-5-2018 at 05:59

Spargers

The quartz one is something I haven't run into before.

Wonder if it's for some photochemical application?

TheNerdyFarmer - 5-5-2018 at 06:28

Oooh, I didn't think of that. That would be interesting since quartz doesn't absorb much uv light. Good thinking!

What is this thing?

VSEPR_VOID - 21-5-2018 at 16:38

I have no other information aside from the picture. Someone was selling glass online and sent me this as part of their inventory. Does anyone have any idea what it is? I have not seen anything like it

Capture.PNG - 115kB

RogueRose - 20-9-2018 at 06:03

I've never seen this type of screw top on these bottles, can anyone identify what kind of cap these would use? A seller has a few cases of old bottles from 500ml - 4L but none have a cap.

Do these look like 33-430mm mouths?
SSL.jpg - 30kB

This is the GL45 lid that I am used to for reagent bottles.
gl45.jpg - 15kB

I see that the GL45 has much tighter threads and more turns to close it. IDK what the strengths and weaknesses are for each and how they compare.

[Edited on 9-20-2018 by RogueRose]

JJay - 20-9-2018 at 08:55

Quote: Originally posted by RogueRose  
I've never seen this type of screw top on these bottles, can anyone identify what kind of cap these would use? A seller has a few cases of old bottles from 500ml - 4L but none have a cap.

Do these look like 33-430mm mouths?


This is the GL45 lid that I am used to for reagent bottles.


I see that the GL45 has much tighter threads and more turns to close it. IDK what the strengths and weaknesses are for each and how they compare.

[Edited on 9-20-2018 by RogueRose]


Qorpak has a guide for sizing bottle caps on its website: http://www.qorpak.com/pages/howtoselecttherightsizecapforyou... If you call them, they will send you a free cap measuring tool.

RogueRose - 20-9-2018 at 09:50

Quote: Originally posted by JJay  
Quote: Originally posted by RogueRose  
I've never seen this type of screw top on these bottles, can anyone identify what kind of cap these would use? A seller has a few cases of old bottles from 500ml - 4L but none have a cap.

Do these look like 33-430mm mouths?


This is the GL45 lid that I am used to for reagent bottles.



I see that the GL45 has much tighter threads and more turns to close it. IDK what the strengths and weaknesses are for each and how they compare.

[Edited on 9-20-2018 by RogueRose]


Qorpak has a guide for sizing bottle caps on its website: http://www.qorpak.com/pages/howtoselecttherightsizecapforyou... If you call them, they will send you a free cap measuring tool.



Thanks! I'm pretty certain now that it is a 33-430 after looking at some more of the images of some bottles on sites that list that thread. It seems odd that the bottles for reagents use both this thread and the GL45 (or 25/35) which has so many more turns much closer together. Is this to prevent moisture from entering or possibly has a higher PSI rating?

Is this for low or high temperature b.p. ?

Sulaiman - 23-9-2018 at 01:16

As part of a job lot of used glassware I have had this piece, unused by me, for a few years.

B14thing.jpg - 3.1MB

The joints are 14/23, the flask is 25ml, and I assume that the jacket is vacuum.

Would this have been made for use at lower temperatures (ether, ethanol etc.)
or for use at higher temperatures (kerosene, mercury, sulphuric acid etc.) ?

How would the vacuum jacket help anything ?
(no obvious way to put packing in that section)

Weird glassware identification

LedvinusMaximus - 20-10-2018 at 14:06

Hey guys,
could you please help me to identify this thingy?



44557868_254722738521296_1491345123437445120_n.jpg - 132kB

DraconicAcid - 20-10-2018 at 14:55

We have some similar-looking glassware that I've been meaning to post here, but nobody has any idea what it is, or was used for.

ninhydric1 - 20-10-2018 at 15:12

From the pictures, it looks like a miniature distillation (possibly Dean Stark) apparatus on a small scale. The small protruding lobes can collect a small amount of refluxing liquid before it overflows I assume, which can be used for both purifying or drying a substance.

CharlieA - 20-10-2018 at 15:33

These are flasks used in a Warburg apparatus for tissue culture. One port of the flask connects to a manometer to measure the evolution/uptake of gas(es). See Wikipedia. I encountered these in the 1960's. No doubt they have been supplanted by some automated gizmo now.

fusso - 20-10-2018 at 15:34

I remember there's a glassware identification thread. Maybe posting there is better than making a new thread.
https://www.sciencemadness.org/whisper/viewthread.php?tid=31...

Elrik - 24-10-2018 at 09:11

All the vigreux columns I see just have the 'fingers', but these two distillation columns I found have 'fingers' and 'melons'. Does this style have its own name?

200_8612.JPG - 49kB200_8616.JPG - 73kB

S.C. Wack - 24-10-2018 at 16:16

Quote: Originally posted by Elrik  
All the vigreux columns I see just have the 'fingers', but these two distillation columns I found have 'fingers' and 'melons'. Does this style have its own name?


If the pictures were shown to glassblowers I would guess they would call them old. You don't say the brand like that wouldn't help...does their current catalog not have such a thing?

Quote: Originally posted by Sulaiman  
Would this have been made for use at lower temperatures (ether, ethanol etc.)
or for use at higher temperatures (kerosene, mercury, sulphuric acid etc.) ?

How would the vacuum jacket help anything ?
(no obvious way to put packing in that section)


It's a pear-shaped Claisen flask with a nifty yet rare vacuum jacket, which helps to keep it it from becoming a condenser. It can be used in whichever simple distillation but would probably be at its best in high vacuum, with the length as a mist/bump trap. A perfect fit in the cannabis distillate for home use thread.

Elrik - 24-10-2018 at 22:36

Sorry, I think theyre corning [they were obtained used both in a cardboard sleeve that said corning] but theyre not in their current catalog, theyre probably at least 30 years old. I just thought someone might recognize the unusual style.

Peptide Synthisis?

+ION - 31-1-2019 at 16:49

What is this?

More importantly, what will you give me for it?

METROWARE
25ml

Fritted bottom might suggest peptide synthesis?

Thanks to Dr. Bob for providing me with a stopcock for it, now it needs a good home. In appreciation to the Dr. for his generosity to me and the community over the years, I will donate 1/2 to him. So bid big!

Appreciate your thoughts!

(PM me if you have an offer)





mystGlass.jpg - 2.5MB

Custom (?) Distillation Head

PrussianBlue - 12-3-2019 at 04:00

I was gifted this unique piece of glassware yesterday. I was told it is a custom piece that was made in the 1950s or 1960s. Does anyone have a guess as to what it's specific purpose would be?

IMG_20190311_210819.jpg - 3.6MBIMG_20190311_210830.jpg - 3.6MB

Sulaiman - 12-3-2019 at 04:37

Looks like a Perkin Triangle for cutting fractions during reduced pressure distillations, with a partial take-off option.
... I want one. https://en.wikipedia.org/wiki/Perkin_triangle

PrussianBlue - 12-3-2019 at 06:51

Quote: Originally posted by Sulaiman  
Looks like a Perkin Triangle for cutting fractions during reduced pressure distillations, with a partial take-off option.
... I want one. https://en.wikipedia.org/wiki/Perkin_triangle


I'm not overly attached to it just yet, so shoot me a U2U if you're interested in it...

Dr.Bob - 21-3-2019 at 17:49

Quote: Originally posted by RogueRose  
I've never seen this type of screw top on these bottles, can anyone identify what kind of cap these would use? A seller has a few cases of old bottles from 500ml - 4L but none have a cap.

Do these look like 33-430mm mouths?

[Edited on 9-20-2018 by RogueRose]


These are the same caps as used on standard 4L solvent bottles. They are common in labs, so easy to get in most labs. The great thing about standards is that there are do many of them, all different.

Sep.Funnel or what ?

Sulaiman - 14-4-2019 at 14:33

Because I'm emigrating from UK I thought I'd 'stock up' on used Quickfit via eBay when suitable (cheap),
I just won this item that is described as 'Vintage Pyrex Separating Funnel Double Tap Laboratory Glassware'
but looks more like a gas sampling tube with 3-way valves.
Anyone know of a specific use for this configuration ?

Eureka.jpg - 248kB

Mesa - 20-5-2019 at 09:45

some kind of oil/water separator?


[Edited on 20-5-2019 by Mesa]

[Edited on 20-5-2019 by Mesa]

Mesa - 20-5-2019 at 10:04


RedDwarf - 20-5-2019 at 10:28

Second one looks like a dean stark trap, but i think the first one has a gas liquid separation (or maybe addition) function, but I'm no expert!

Mesa - 20-5-2019 at 16:23

i thought dean starks had a tap on one arm(left arm as shown above) letting you drain the lower phase.

Sulaiman - 20-5-2019 at 19:16

I agree that the second photo is of a separator.
Some have taps and some, like this one, have graduated receivers,
e.g. determine water (or heavier fraction ) content of liquids.

I think that I could configure the first piece as a partial takeoff head. e.g.
Variable Takeoff.jpg - 152kB
oops! ... "downjere" = "down here" ... finger trouble and not checking properly :(

[Edited on 21-5-2019 by Sulaiman]

numos - 2-6-2019 at 14:12

Found this in the glass shop at UC Berkeley. I believe it lived on the dean's desk for a while before it was broken. It has uranium glass connections and a strange green orb at the bottom.

Some kind of old fashioned sensor maybe? Density, viscosity.....?

20190321_133423.jpg - 4.4MB

wotaen - 5-7-2019 at 10:20

Bought a vintage chemistry suitcase, any ideas?



IMG_5674.JPG - 1.6MB IMG_5675.JPG - 1.9MB IMG_5673.JPG - 2MB IMG_5672.JPG - 1.6MB

S.C. Wack - 5-7-2019 at 13:11

It looks like some gas drying maybe generation and a I'll call it a gravity separator....a sort of decanter? The first one looks like some sort of separator also?

j_sum1 - 5-7-2019 at 14:32

The first is some kind of specialist volumetric flask. Note the little lines between each of the three bulbs. I guess the idea is to measure three immiscible liquids in one hit for a batch process. Actually, they would not need to be immiscible on second thoiughts.

wg48temp9 - 6-7-2019 at 09:50

Quote: Originally posted by j_sum1  
The first is some kind of specialist volumetric flask. Note the little lines between each of the three bulbs. I guess the idea is to measure three immiscible liquids in one hit for a batch process. Actually, they would not need to be immiscible on second thoiughts.


To me they look like the flasks are just balanced on top of each other.

wotaen - 6-7-2019 at 11:01

Quote: Originally posted by wg48temp9  
Quote: Originally posted by j_sum1  
The first is some kind of specialist volumetric flask. Note the little lines between each of the three bulbs. I guess the idea is to measure three immiscible liquids in one hit for a batch process. Actually, they would not need to be immiscible on second thoiughts.


To me they look like the flasks are just balanced on top of each other.


I swear, it's one flask :)

RogueRose - 6-7-2019 at 18:20

Quote: Originally posted by j_sum1  
The first is some kind of specialist volumetric flask. Note the little lines between each of the three bulbs. I guess the idea is to measure three immiscible liquids in one hit for a batch process. Actually, they would not need to be immiscible on second thoiughts.


That's a good guess, but I'm wondering if it wasn't made using volumetric flasks simply b/c that is what was on hand. Who knows if this was even meant to be functional and not some goofy science glass blowing project that used old flasks that had gone out of calibration over time (can happen from heating vol flasks too hot or even drying them too hot).

Ubya - 7-7-2019 at 02:37

Quote: Originally posted by j_sum1  
The first is some kind of specialist volumetric flask. Note the little lines between each of the three bulbs. I guess the idea is to measure three immiscible liquids in one hit for a batch process. Actually, they would not need to be immiscible on second thoiughts.

it wouldn't be very precise as the volume of the sum of two miscible liquids is rarely the sum of each volume, so they should be measured separately (not an ideal solution)

[Edited on 7-7-2019 by Ubya]

j_sum1 - 7-7-2019 at 16:52

Quote: Originally posted by Ubya  
Quote: Originally posted by j_sum1  
The first is some kind of specialist volumetric flask. Note the little lines between each of the three bulbs. I guess the idea is to measure three immiscible liquids in one hit for a batch process. Actually, they would not need to be immiscible on second thoiughts.

it wouldn't be very precise as the volume of the sum of two miscible liquids is rarely the sum of each volume, so they should be measured separately (not an ideal solution)

[Edited on 7-7-2019 by Ubya]

Which is why I originally thought immiscible. But even if the liquids were miscible, you would not get that much mixing with that design. And it might be for an application where density changes are negligible -- such as combining three dilute aqueous solutions in a known ratio.
If my idea is correct then it is for a repeated batch process. Repeatability and uniformity of outcome might well be more important than measurement precision.

Dr.Bob - 10-7-2019 at 07:02

The bottom flask looks like a volumetric flask. The volumes of each part all look similar, so maybe it was for a process that was done at 1/3, 2/3 or 100% scale, and they could use one flask for any of them without having to do up to three measurements. That seems pointless, but I have seen dumber things.

The second and third look like drying tubes of various designs. I have seen these types before over the years, but not widely used now.

RedDwarf - 10-7-2019 at 08:30

I can't believe the 3 volume flask was ever part of a practical process - can you imagine the difficulty in emptying it (plug flow) not to mention cleaning it, and all without any benefits in terms of accuracy or handling. My guess is that it's either a piece of artwork/glass blowing practice or that it was made to be the yard of ale from hell!

S.C. Wack - 10-7-2019 at 15:47

There was a version with 2 bulbs and lines called a Giles flask.

BromicAcid - 10-7-2019 at 17:36

I have used something similar to the first one for a Kugelrohr, but in that case it was just two bulbs, one to distill from and one to collect, maybe this could be some sort of fractionation with that sort of setup.

wotaen - 13-7-2019 at 13:49

Wow, I did not expect them to be so hard to identify. They originate from a high school maybe 40 years ago. I'll see if I can find someone there who knows what are they

S.C. Wack - 21-7-2019 at 09:36

Have you determined the liquid volume to whatever lines are present?

wotaen - 25-7-2019 at 03:10

Quote: Originally posted by S.C. Wack  
Have you determined the liquid volume to whatever lines are present?


Top one is 40ml and then 100ml and 100ml.

The equipment comes from around 1960 from one technical highschool. I've asked them if they could answer what it is, but since it's holiday here, I think it'll take a while :)

Panache - 1-8-2019 at 19:12

two and three are drying towers, useful when the dessicant becomes dissolved in water , as it drips down and is removed from the stream of gas being dried. i think Vogel 3rd has an illustration of one when explaining how to produce dry ammonia gas from the solution.

Dr.Bob - 2-8-2019 at 04:19

The custom volumetric was likely designed to make a certain solution, like 1/6th X in 50:50 ethanolic water. Many tinctures were made that way. Even vanilla flavor is often made from concentrated ethanolic vanilla which is diluted with water and more alcohol to make a "standard" solution.

SuperOxide - 3-10-2019 at 06:59

I was watching Forensic Files, and during a scene where they were explaining how they tested the cremation ashes of a victim for a poison or toxin (I think it was arsenic.. but I could be wrong), they showed some glassware that I haven't seen before, and haven't been able to find anything about it online.

It looked like an N shaped piece of glass with the ground glass joint on the bottom left part (attached to an erlenmeyer flask) and the part on the right side was open to the air and widened, which would hold some colored liquid/reagent. It looks somewhat similar to an airlock that you would use for brewing, but I'm pretty sure there's more to it than that.

I got the impression that some type of reagent was held in said apparatus while some reaction was happening in the attached erlenmeyer flask, and gasses released were send through the N shaped apparatus to bubble up through the colored reagent. Also somewhat resembled a horizontal bubbler, but I'm not certain that it serves the same purpose.

Not super important, more so just curiosity. For all I know, they could have thrown a lab coat on some actors and said throw some cool glassware looking crap together to make it look more sciency! haha.

Thanks in advance!

odd-glassware-3.png - 363kB odd-glassware-4.png - 499kB odd-glassware-5.png - 477kB odd-glassware-2.png - 310kB

[Edited on 3-10-2019 by SuperOxide]

CharlieA - 3-10-2019 at 17:19

Some possibilities come to mind:
1 - a seal to keep external air from entering the flask; you called this an airlock.
2 - a seal to allow gas(es) generated in the Erlenmeyer flask to escape, without external air entering; also preventing a build up of pressure in the flask due to generated gas.
3 - allow gas generated in the flask to react with a reagent in the u-tube for identification purposes.
4 - as you said, to make things look more "science-y)!:D

fusso - 3-10-2019 at 18:09

Do you have links to the vid(s)?

SuperOxide - 3-10-2019 at 22:01

Quote: Originally posted by CharlieA  
Some possibilities come to mind:
1 - a seal to keep external air from entering the flask; you called this an airlock.
2 - a seal to allow gas(es) generated in the Erlenmeyer flask to escape, without external air entering; also preventing a build up of pressure in the flask due to generated gas.
3 - allow gas generated in the flask to react with a reagent in the u-tube for identification purposes.
4 - as you said, to make things look more "science-y)!:D

Thanks for the reply, CharlieA. My replies to each point are below:

1 & 2 - The reason I decided this wasn't likely was because the size/shape/volume seemed to make it unlikely, as well as the fact that the liquid inside of each instance of this apparatus being used was a different color (as if it was an indicator of some kind, not just regular water in an air lock).
3 - This is definitely my leading assumption, but I'm curious as to what the name of this glass piece is called (since there are a number of different glassware that can be used to accomplish this).
4 - This possibility is still on the table, the reason I'm not fully decided on it is because it seems to fit inline with what the narrator is talking about (which is referenced in the links in my reply to fusso below).

================

Quote: Originally posted by fusso  
Do you have links to the vid(s)?

Yep! Was able to find it again, thankfully. The specific Forensic Files episode is Penchant for Poison (S10E33)

After going through the relevant parts of the video again, I found out the technique they were using this glass apparatus for was called colorimetric testing.

The relevant parts of the video are listed below:

  1. Here's when they talk about the chemical test they perform (@ 13:07)
  2. Here's when you first get a glimpse at the actual glassware in question (@ 13:31)
  3. And here's a bit of a closer look at one of them (@ 13:35)

Hope that helps, and thanks again!

P.S. This is my first post on the SM forums! (or I guess this specific post is my second, but you get what I mean). Long time lurker, finally grew some balls and decided to make an account and get involved. So.. nice to [virtually] meet you guys!

Stopper with handle

yobbo II - 6-11-2019 at 16:41

Hi,
What is this item. It simply looks like a stopper with a handle. There is no access to the inside of the stopper and 'handle'.

Yob

DSC00340.JPG - 2.1MB

SWIM - 7-11-2019 at 12:04

Looks like the stoppers you see on some old Iodine flasks used in Iodine determination tests.

I have no idea why they look like that, but some of them do.

yobbo II - 8-11-2019 at 08:12

Perhaps it is to help stop your hands from getting contaminated or discoloured with product.

CharlieA - 8-11-2019 at 13:57

I think that this is just an "old-fashioned" glass stopper. Perhaps the "handle" was hand made by a glass blower. Out of curiosity, is the ground stopper part a standard taper? I wouldn't think it is so old that it is a one-of-a-kind, but it would make a neat little display with other odd glassware that we all tend to accumulate through the course of time!
A better way to protect your hands from iodine might be to wear gloves

SWIM - 8-11-2019 at 19:48


https://www.camlab.co.uk/iodine-flasks-quickfit-p18359.aspx

I meant stoppers like these.

Yobbo II's stopper is 24/29 according to the markings.


[Edited on 9-11-2019 by SWIM]





[Edited on 9-11-2019 by SWIM]

Doc B - 23-12-2019 at 22:25

I have NFI what these are but I've somehow managed to accumulate a bunch of them.

IMG_20191224_172321.jpg - 352kB IMG_20191224_172447.jpg - 741kB

Edit: the hook near the spout is actually a vent or something that opens to the outside. Does anyone have any idea what they are or what ould be used for?

[Edited on 24-12-2019 by Doc B]

SWIM - 24-12-2019 at 17:09

They look like a bartender could use them to measure out shots of hard liquor.

They are mighty familiar though. I'm SURE I've seen these on Ebay.

Maybe related to chromatography somerhow?

EDIT: looked on Ebay, the only similar thing I saw was obviously mis-named.


[Edited on 25-12-2019 by SWIM]

Doc B - 26-12-2019 at 17:05

Quote: Originally posted by SWIM  
They look like a bartender could use them to measure out shots of hard liquor.

They are mighty familiar though. I'm SURE I've seen these on Ebay.

Maybe related to chromatography somerhow?

EDIT: looked on Ebay, the only similar thing I saw was obviously mis-named.


[Edited on 25-12-2019 by SWIM]


They could be for chromatographic use but I'm really not sure. What did you find on ebay?

SWIM - 26-12-2019 at 19:56

I went looking for the mis-named posting (it was something totally inane, like lab beaker distillation flask), when I found this: https://www.ebay.com/itm/Amber-Glass-50-ml-Tilt-Measure-Disp...
So It's apparently a tilt measure dispenser.

You COULD set up a bar with these.

EDIT: Incidentally, I think I was confusing them with chromatography sprayers.
Another Item I know little about.

[Edited on 27-12-2019 by SWIM]

And these do seem to have a vent where your ones do, but it's just a little bump on these models.

[Edited on 27-12-2019 by SWIM]

Doc B - 28-12-2019 at 12:09

Quote: Originally posted by SWIM  
I went looking for the mis-named posting (it was something totally inane, like lab beaker distillation flask), when I found this: https://www.ebay.com/itm/Amber-Glass-50-ml-Tilt-Measure-Disp...
So It's apparently a tilt measure dispenser.

You COULD set up a bar with these.

EDIT: Incidentally, I think I was confusing them with chromatography sprayers.
Another Item I know little about.

[Edited on 27-12-2019 by SWIM]

And these do seem to have a vent where your ones do, but it's just a little bump on these models.

[Edited on 27-12-2019 by SWIM]


Mystery solved. Thank you SWIM!

I will have to try them out and determine the volume delivered by the different sizes.

More mystery glass to come, stay tuned!

Although I'm pretty sure some of it was made just to fcuk with me.

Eddie Current - 7-6-2020 at 03:32

Quote: Originally posted by Sulaiman  
Because I'm emigrating from UK I thought I'd 'stock up' on used Quickfit via eBay when suitable (cheap),
I just won this item that is described as 'Vintage Pyrex Separating Funnel Double Tap Laboratory Glassware'
but looks more like a gas sampling tube with 3-way valves.
Anyone know of a specific use for this configuration ?



It is a gas sample collection tube designed for vacuum and trapping.

ekilsawkcalbeoj - 28-6-2020 at 09:21



It's a receiving flask, but I'm not quite sure the purpose of the upper valve and side vent/cap. If it's for draining without breaking vacuum, I suspect I should vent carefully before draining?

I tried searching forever on the internet to find something like it so I could see what it was called or how it operated, but could never find one like it. :(


SWIM - 28-6-2020 at 10:23

How is the side vent finished?

I assume it's not a ground joint under there, so is it just like a rubber cap on a beaded tube or something else?

Beaded tubes I usually think of as for hoses.

Perhaps the vent goes to a hose to the vac pump to rapidly re-establish vacuum after draining the flask.

Since there's virtually no space for distillate to accumulate above the top valve (I'm assuming your condenser is a common style), it might be important to evacuate that flask quickly so you can start collecting distillate instead of it just running back into the boiling flask.

This is a hypothesis based entirely on what I see here. I haven't seen anything like it on a rotovap before.

EDIT: But here is what looks like a similarly functioning fitting:https://www.ebay.com/itm/USA-Lab-50L-Rotary-Evaporator-RotoVap-RE-1050-180-C-220V/401655360968?hash=item5d84866dc8:g:Zt0AAOSwIfFdufmN

The rotovaps I've looked at before were mostly ones I thought I might buy: cheap simple ones.

You've got a Ferrari and some of the parts just don't look like the ones on the Studebakers I've been looking at.

Okay, that picture didn't work, but this link should:











ernestborgnineappendectomyscar.gif - 79kB

[Edited on 28-6-2020 by SWIM]

Eddie Current - 28-6-2020 at 14:09

Has anyone encountered these things before?

50 mm in height x 15mm diameter. 19/26 joints.



56546.PNG - 132kB Capture.PNG - 171kB r3434.PNG - 238kB

I assume it's some type of sampler or instrument vessel.

[Edited on 28-6-2020 by Eddie Current]

ekilsawkcalbeoj - 29-6-2020 at 09:59

Quote: Originally posted by SWIM  
How is the side vent finished?

I assume it's not a ground joint under there, so is it just like a rubber cap on a beaded tube or something else?

Beaded tubes I usually think of as for hoses.

Perhaps the vent goes to a hose to the vac pump to rapidly re-establish vacuum after draining the flask.

Since there's virtually no space for distillate to accumulate above the top valve (I'm assuming your condenser is a common style), it might be important to evacuate that flask quickly so you can start collecting distillate instead of it just running back into the boiling flask.

This is a hypothesis based entirely on what I see here. I haven't seen anything like it on a rotovap before.

EDIT: But here is what looks like a similarly functioning fitting:https://www.ebay.com/itm/USA-Lab-50L-Rotary-Evaporator-RotoVap-RE-1050-180-C-220V/401655360968?hash=item5d84866dc8:g:Zt0AAOSwIfFdufmN

The rotovaps I've looked at before were mostly ones I thought I might buy: cheap simple ones.

You've got a Ferrari and some of the parts just don't look like the ones on the Studebakers I've been looking at.

Okay, that picture didn't work, but this link should:

[Edited on 28-6-2020 by SWIM]


It's GL style glass threads similar to the GL14 barbs I have on the condenser, but much larger of an opening. The plastic I believe is PTFE. I think it's just a vent though, like you'd close the stopcock on the top, twist the vent slowly to release vacuum, then drain the flask at the bottom. I assume when drained, you'd slowly open the stopcock at the top and pull in a bunch of vapor from the condenser, which would probably be ok. But I'm no expert, these are just assumptions.

You're right though, just a hypothesis, again I've never seen anything like this before. I would also compare it to one of the receiver flasks you see on the industrial size rotavap's, but those often just have a drain and stopcock on the bottom, not the side vent and stopcock at the top. This is what's confusing me.

If it helps, I'm pretty sure the rotavap this was attached to was used for some kind of cannabis processing. There was some resin stuck to the glass when it arrived and the smell was kind of obvious. Also, the maker is Adams & Chittenden, and they only make custom glass to order, if you like unusual glassware, you should check out their gallery pages, there's some really cool stuff in there. I should probably ask them if they remember making it.

Eddie Current - 29-6-2020 at 12:49

Quote: Originally posted by ekilsawkcalbeoj  
Also, the maker is Adams & Chittenden, and they only make custom glass to order, if you like unusual glassware, you should check out their gallery pages, there's some really cool stuff in there. I should probably ask them if they remember making it.


There's some amazing pieces in their collection.

A jacketed Vigreux is now on my "must get" list.:cool:

SWIM - 1-7-2020 at 19:34



https://www.ebay.com/itm/133406852719

Doesn't look like distillation apparatus to me.
Something for mixing gasses maybe?







mysteryglass.jpg - 301kB

[Edited on 2-7-2020 by SWIM]

NOONE ELSE NOTICE.........

nzlostpass - 1-7-2020 at 20:03

Noone else notice the two skiers about to descend the ski slope scene in this piece?

I honestly thought that's what you would be showing us at first!


Quote: Originally posted by ekilsawkcalbeoj  


It's a receiving flask, but I'm not quite sure the purpose of the upper valve and side vent/cap. If it's for draining without breaking vacuum, I suspect I should vent carefully before draining?

I tried searching forever on the internet to find something like it so I could see what it was called or how it operated, but could never find one like it. :(


Junk_Enginerd - 17-7-2020 at 12:14

Any ideas? Found it at a random yardsale for nothing. It's definitely borosilicate, so I assume it's a lab product.

20200714_204210.jpg - 2.5MB

Eddie Current - 21-7-2020 at 23:33

Quote: Originally posted by Junk_Enginerd  
Any ideas? Found it at a random yardsale for nothing. It's definitely borosilicate, so I assume it's a lab product.


It's a bit hard to tell from that image. My guess is that it's some type of atomiser.

"Soxhlet Extractor"

The Plutonium Bunny - 28-7-2020 at 11:41

Does anyone have an idea what this piece is? I recently acquired it in a box labelled "Soxhlet Extractor", but it is rather unlike any Soxhlet I have seen before. There is no ground glass to be found on the whole thing. Additionally, one of the tubes is positioned such that it drips directly on the glass frit inside the chamber; the frit leads to another tube exiting the chamber. A final tube leads directly into the glass chamber. There are no obvious places for attaching a condenser of any kind.
It looks fancy (expensive), but I have no idea what useful purposes it might serve. Thank you for your help in its identification!

IMG_3597.JPG - 2.4MB IMG_3599.JPG - 2.3MB IMG_3598.JPG - 2.2MB

itsallgoodjames - 11-10-2020 at 21:13

Quote: Originally posted by The Plutonium Bunny  
Does anyone have an idea what this piece is? I recently acquired it in a box labelled "Soxhlet Extractor", but it is rather unlike any Soxhlet I have seen before. There is no ground glass to be found on the whole thing. Additionally, one of the tubes is positioned such that it drips directly on the glass frit inside the chamber; the frit leads to another tube exiting the chamber. A final tube leads directly into the glass chamber. There are no obvious places for attaching a condenser of any kind.
It looks fancy (expensive), but I have no idea what useful purposes it might serve. Thank you for your help in its identification!


Just a total guess, maybe something for dissolving gasses in the solution? No clue what the other side tube is for though

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