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Sulaiman
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Vosoryx
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]
CAUTION : Hobby Chemist, not Professional or even Amateur
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wg48
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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
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TheNerdyFarmer
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Hello all! This bundle of joy just came in the mail today and I have no idea what they are used for  ! 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
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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.
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TheNerdyFarmer
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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.
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SWIM
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Spargers
The quartz one is something I haven't run into before.
Wonder if it's for some photochemical application?
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TheNerdyFarmer
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Oooh, I didn't think of that. That would be interesting since quartz doesn't absorb much uv light. Good thinking!
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Texium
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Thread Split
12-5-2018 at 08:09 |
VSEPR_VOID
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What is this thing?
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
Within cells interlinked
Within cells interlinked
Within cells interlinked
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Texium
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Threads Merged
21-5-2018 at 16:42 |
RogueRose
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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]
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JJay
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| 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.
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RogueRose
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| 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.
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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?
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Sulaiman
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Is this for low or high temperature b.p. ?
As part of a job lot of used glassware I have had this piece, unused by me, for a few years.
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)
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LedvinusMaximus
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Weird glassware identification
Hey guys,
could you please help me to identify this thingy?
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DraconicAcid
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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.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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ninhydric1
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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.
The philosophy of one century is the common sense of the next.
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CharlieA
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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.
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fusso
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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...
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j_sum1
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Threads Merged
20-10-2018 at 16:09 |
Elrik
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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?
 
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S.C. Wack
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| 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.
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Elrik
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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.
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+ION
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Peptide Synthisis?
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)
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PrussianBlue
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Custom (?) Distillation Head
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?
 
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Sulaiman
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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
CAUTION : Hobby Chemist, not Professional or even Amateur
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PrussianBlue
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I'm not overly attached to it just yet, so shoot me a U2U if you're interested in it...
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Dr.Bob
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| 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.
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