latest glassware purchase

Until now I had a good experience with deschem, the quality is quite reasonable. The price is really unbeatable compared to european glassware, at least when buying stuff with ground joints. Nearly all of my ground glass stuff is from deschem, the beaker and stuff like that are cheaper to buy here. I had european 29/32 glassware before, but because deschem only has 24/40 and 24/29 I switched mainly to 24/29. The joints fit well into each other. I heard of some problems when using different parts from different suppliers, but my 29/32 glassware has a good fit with the 24/29 deschem glassware(I'm using joint adapters from VWR and the other 29/32 stuff is mainly Duran/Schott). Maybe I'm just lucky until now or others have been unlucky, but so far the whole experience with deschem glassware is the same as with other glassware.
The only bad thing are the rubber sealings in the thermometer adapters. They are useless after a few runs - especially with oxidizing chemicals in there, but I just use teflon tape instead of the rubber ring Also the thermometers I got maybe two years ago were pretty inaccurate, they showed boiling water to be 90°C. But the new ones I got a week ago seem ok(98°C for boiling water).

[Edited on 26-11-2019 by Tellurium]

[Edited on 26-11-2019 by Tellurium]

Distillation head!

Christmas came early this year, I found a very nice partial-takeoff distillation head for $100 on ebay! Shipping + customs taxes puts the total just over $150. Probably the best deal I've ever made considering these retail for around $700 new from a glassware supplier. It's in perfect condition, except for a broken stopcock thread and some rotten stopcock nuts, o-ring and washers.



This particular design is the one of Rehn and Theilig. (Figure from E. Krell's Handbook of laboratory distillation, 2nd ed., p. 392)

Vapors condense on the "intensive" condenser and fall down on the oblique weir just above sideway joint. This diverts the condensate to the horizontal arm with two stopcocks. Stopcock 1 precisely controls the reflux ratio: the distillate that doesn't go through this stopcock falls back over the weir into the column. Stopcock 2 is there to start or interrupt product withdrawal without modifying the reflux ratio.

The receiving flask is connected to the joint on bottom right, possibly through a condenser to cool the product further. Stopcocks 3 and 4 allow changes of receiver during vacuum distillation without disturbing the column. Hose barb A is connected to a vacuum source, and hose barb B to the atmosphere or some other gas.

As promised, a picture of the weir inside the colmn. As you can see, the condensate flowing on the walls of the condenser is diverted into the side tube. This also explains the choice of condenser design: A regular Dimroth condenser where condensation drips down from the coil in the center (and not the walls) would not work for this as it would miss the weir.

Also a closeup of the reflux ratio stopcock. Small notches on both sides of the stopcock bore (not chipped, it really is designed like that) allow very small flowrates to be let through when the stopcock would normally be in a "totally closed" position. Unfortunately the thread on this one is broken, so I might replace it with a PTFE one which I will modify to also have those notches. A really nice detail, and I think this would work well on an addition funnel for very slow addition rates.





[Edited on 9-12-2019 by Heptylene]

Quote: Originally posted by fusso

Quote: Originally posted by SWIM   Just received a 25 plate vacuum jacketed 29/42 Bruun column. Whats that for?

@SWIM: It sounds like you need to invest in some glass-blowing equipment! Seriously, you might check the local university chemistry department to see if they have a glass blower on staff who can repair some of your things...or if they don't have one on staff, perhaps they can refer you to one.

Quote: Originally posted by Heptylene

As promised, a picture of the weir inside the colmn.

Quote: Originally posted by CharlieA

@SWIM: It sounds like you need to invest in some glass-blowing equipment! Seriously, you might check the local university chemistry department to see if they have a glass blower on staff who can repair some of your things...or if they don't have one on staff, perhaps they can refer you to one.

I've been meaning to pick up an oxygen generator and torch for small repairs, but I suppose I ought to see how much getting the Bruun worked on by somebody competent would cost.
I don't think they're better than Oldershaws, but they're mighty uncommon and I'd Like to have one in working condition.

@Heptylene: I think Bruuns have a lot of holdup, but I haven't used one.
This is literally the only one I've had a chance to buy and it came broken.

I do have flasks and mantles up to 5 liters, but I was planning on using 3 liter because I have spherical mantles in that size and want to try them out.

BTW: here's what a Bruun without the outer vacuum jacket looks like.
Re-reading this post it occurred to me that my descriptions were probably confusing.

















[Edited on 10-12-2019 by SWIM]

My latest purchase, nothing exciting, but all decent quality. I have sworn off cheap glass.

Quote: Originally posted by B(a)P

My latest purchase, nothing exciting, but all decent quality. I have sworn off cheap glass.

Quote: Originally posted by arkoma

A full face organic respirator!!

Quote: Originally posted by j_sum1

I am now the proud owner of a range of volumetric flasks: 1×1000mL, 2×500mL and 4×100mL.

Just bought all of that.
Let me translate everything in order from top to bottom.

Beaker, low form, boro 3.3, 100ml, no graduation, pack of 10

Standing flask, boro 3.3, ground glass joint 29/32, 250ml

Joint clamp, ground glass joint 29/32

Liebig condenser, boro 3.3, glass olives, 29/32, 400mm

Distilling head with vertical junction, 2 29/32 ground glass joints, 1 14/23 ground glass joint

Universeal thermometer, white-coated, filling Hg, 76mm immersion depth, length 300mm, -10 to +360:2° C

Moldex 8090 particle filter adapter, 2x per pack

PTFE-joint sleeves for ground glass joint 29/32

PTFE tape

Quote: Originally posted by Draeger

Just bought all of that. Let me translate everything in order from top to bottom. Beaker, low form, boro 3.3, 100ml, no graduation, pack of 10 Standing flask, boro 3.3, ground glass joint 29/32, 250ml Joint clamp, ground glass joint 29/32 Liebig condenser, boro 3.3, glass olives, 29/32, 400mm Distilling head with vertical junction, 2 29/32 ground glass joints, 1 14/23 ground glass joint Universeal thermometer, white-coated, filling Hg, 76mm immersion depth, length 300mm, -10 to +360:2° C Moldex 8090 particle filter adapter, 2x per pack PTFE-joint sleeves for ground glass joint 29/32 PTFE tape

First Time Glassware Buy

I celebrated the relaxation of Texas' glassware laws by making my first real glassware purchase ever.

After spending a lot of time over-thinking what brands to focus on and who to buy from, I decided to go with domestic sellers and stick with reputable brands. I narrowed my search down to this seller on eBay: labstuff16 as he seemed to have most of what I was looking for at this time.

So here are some pictures:



Everything was very nicely packed and individually bubble-wrapped. The glassware itself is all Chemglass except for the 100ml RBF (Pyrex) and maybe the Liebig condenser (Sigma). They are all used, but all pieces are essentially flawless or show very minor use.

The only possible issue that I can see is that I cannot find a 105 degree bent adapter in the box, and I should have received one. I am going to check my packaging a few more times and check with the seller. It was not sent then I believe it was simply an innocent oversight.

I am still awaiting a cold finger trap and some Keck clips from other sellers.

[Edited on 20-04-09 by WGTR]

+1 on the Claisen adaptor, for addition funnel or thermometer
also;
A 24/40 stopper for the addition funnel
(or a more versatile 24/40 gas adapter with stopcock)

A thermometer adapter/well/pocket

A roll of plumbers ptfe tape (or some messy joint grease)

A plain column which can be used as a Hempel column, air condenser, or chromatography column
or
A Vigreux column as even one to two additional theoretical plates make a worthwhile difference
and it also acts as a splash adapter

nice-to-have are an NS24-sized bottle brush for the joints and maybe a burette brush for the condenser
______________________________________________________________
Out of curiosity ... is the flask with joints at the top and bottom for essential oils steam distillation ?
____________________________________________________________________________
My latest glassware, showing long term testing of water circulation reliability
... all collected whilst here on holiday/lockdown ... waiting for a 34/35 to 24/29 adapter


I've been very lucky;
. the 5L rbf with heating mantle and three stands w/clamps were gifted to me
. the Vigreux column, still head adapter, thermometer adapter, thermometer, condenser and receiver adapter were free
as the 1000ml and 500ml flasks of an eBay '1000ml distillation kit' were broken in transit so I got a full refund

I've only had to buy a 14/23 thermometer adapter (in the rbf), a second thermometer, and a water pump,
plus the 34/35 to 24/29 adapter which I'm waiting for.

P.S. the upper thermometer shows the current ambient temperature - in the shade before noon

P.P.S. my stands and clamps in UK are cheap Chinese plated steel ... which rusts
if you are considering new stands and clamps I recommend aluminium (as shown above) because they are rust-proof (except for the screws).

[Edited on 11-4-2020 by Sulaiman]

Quote: Originally posted by earpain

Hi. Can anyone enlighten in regards to the SPD stillhead situation? For example this listing: https://www.ebay.com/itm/Distilling-Head-Short-Path-10-18-Th... That' s $17.95 Or here we go, the very same labstuff16, Chemglass branded: https://www.ebay.com/itm/Chemglass-Distilling-Head-short-pat... $25.49 Meanwhile most other listings for the same item are $80 - $300. Often closer to $200, and all parties have perfect rating history , etc

Quote: Originally posted by WGTR

Quote: Originally posted by earpain   Hi. Can anyone enlighten in regards to the SPD stillhead situation? For example this listing: https://www.ebay.com/itm/Distilling-Head-Short-Path-10-18-Th... That' s $17.95 Or here we go, the very same labstuff16, Chemglass branded: https://www.ebay.com/itm/Chemglass-Distilling-Head-short-pat... $25.49 Meanwhile most other listings for the same item are $80 - $300. Often closer to $200, and all parties have perfect rating history , etc Well, I can vouch for labstuff's packing. It's excellent, and probably overkill. He handled the last order very well in this regard. I just put in another approximately $350 order, and I'll post an "un-boxing" here when it arrives, probably in a week or so. His pictures are representative of what he sends, and aren't necessarily the same branded items that you see in the picture. It may be Chemglass, Kontes, etc. Read the item listing to be sure. So far, I have received essentially the same items that have been pictured in the listings, in same or better condition than expected. One thing that I will mention, is that if you see a part number in a listing, do a quick Google search to make sure that it matches the picture in the listing. I've found that a few of his listings for adapters appear to either have the wrong part number listed in the description or the wrong picture. I'm not sure which. He combines shipping costs for multiple items, but for single items to Texas the shipping for a single item is astronomical ($20+). I would say just put a shopping cart together first and ask him for a rough shipping quote before you purchase if this is an issue for you. So far as price is concerned, he does accept offers. If you make a good case for a price, he may entertain your offer. I would suggest giving the guy a day or two to reply to questions via eBay, especially if it requires him to actually go look at an item before answering. I suspect that he has a separate day-job. The item that you are referring to is offered here from Chemglass: https://chemglass.com/distilling-heads-short-path The $80-$300 prices are for what I would suspect are brand new items, not used, as the list price is around $200...or, they're just asking too much. [Edited on 20-04-16 by WGTR]

Quote: Originally posted by WGTR

If you accepted his offers, then you agreed to buy those items, FYI. That's how eBay works. I usually hold off on accepting anything until I decide what all I'm interested in, and how many of each item I would like to make offers for. If you purchase more than one item, then the offers you receive from the seller may be too high, since they are generally for one item only. In that case I may decline an offer or make a counteroffer for multiple items. If some 24/40 glassware disappeared from your shopping cart, it may be because I just bought it. Sorry...

Quote: Originally posted by WGTR

Yeah, I think it's some check box that he forgot to check on his account. For some reason it doesn't allow you to request a total on the purchase with combined shipping. You just have to request and wait for an updated invoice to arrive.

I just received another purchase from a different seller on eBay, letterkenny7745.





These are 1451 Fisher Castaloy 90° double lab clamps. I was a bit surprised when I opened the package. The clamps looked brand new, not used.

Unfortunately, I do not see any other lab equipment in his store at this time.

It was a pretty straightforward eBay purchase and a good experience I would say.

I purchased a collection of stuff from tommytubez, also on eBay. This was more than a business transaction; I found it to be a pleasant experience. He was very quick to reply to his messages, and a seemingly gracious individual.

I actually purchased only the large filter tube and the collection of Kontes 90° lattice connectors. He threw in a few other things as freebies. There's a 100mL reaction flask in there, in addition to some Schlenk filtration tube and a peptide vessel with some small frit at the bottom.



It looks like he still has some of the small lattice connectors available. I tried one out and it clamped securely onto 1/2" aluminum rod. They look brand new. In fact, the glassware looked brand new also, even though it is "used".

He mentioned to me in a message that he has a large quantity of brand new Kontes glassware that is not listed in his store right now, because he has way more glassware than he has time to photograph and list individually. He offered to send pictures of the collection if anyone is interested.

[Edited on 20-04-17 by WGTR]

Got some cows.



Now I need to find some cheap land in the coastal range and start a herd.

This glassware should at the very least enable me to distill through rain and wind and weather, hell bent for leather.

All I need is to hire Rowdy Yates for my lab assistant.

A cow or pig adapter looks useful
but I would like a Perkin triangle ... https://en.wikipedia.org/wiki/Perkin_triangle
e.g. https://www.ebay.co.uk/itm/PERKIN-INTERMEDIATE-LABORATORY-GL...XoAAOSwr9BeWjFP
or https://www.ebay.co.uk/itm/Multiple-Female-x-Male-Joint-Glas...
which gives more operational flexibility.

Quote: Originally posted by Sulaiman

A cow or pig adapter looks useful but I would like a Perkin triangle ... https://en.wikipedia.org/wiki/Perkin_triangle e.g. https://www.ebay.co.uk/itm/PERKIN-INTERMEDIATE-LABORATORY-GL...XoAAOSwr9BeWjFP or https://www.ebay.co.uk/itm/Multiple-Female-x-Male-Joint-Glas... which gives more operational flexibility.

Quote: Originally posted by SWIM

I thought I posted this last night, but I guess not: You don't need the triangle if you've got a 2-valve addition funnel and a Claisen adaptor and a gas inlet fitting. Put the funnel on top of the straight arm of the Claisen and the gas inlet adaptor on the bent arm. Put a piece of hose on the inlet adaptor and clamp it off. Open the funnel side arm valve and close the funnel's main valve. Put the whole thing on your distillation receiver and put an RBF on the bottom. Evacuate and distill until you've got your first fraction and drain it into the flask by opening the funnel's main valve. Close the main valve and the side-arm valve and then vent the flask through the hose on the gas inlet. Change flasks, then close the vent and re-establish vacuum in the collection flask and Claisen by slowly opening the funnel's side-arm valve. I believe this can be referred to as an Agnew/Graft collector.

Quote: Originally posted by B(a)P

Yesterday I took delivery of a distillation kit, which included a 3 neck RBF. Unfortunately the 3 neck RBF showed up in about 50 pieces. I immediately got in touch with the seller, but I have had no response so far. I will give them till the end of the weekend otherwise I will name and shame. Either way I will let everyone know of the outcome.

OK so not glassware but here seemed the best place to post it.

Fresh out of box:





This has been a long-overdue acquisition. Ceramic top. Rated to 550°C. Good sturdy construction. Hours of productive fun await.

And for those interested:
https://www.ebay.com.au/itm/New-magnetic-stirrer-high-temp-c...

Not glassware, but following the reasoning of j_sum1. Finally ordered a hot plate stirrer. It's a cheap Chinese one, but it's all I can afford. Just have to hope it stirs and heats as well as it says in the description and that it won't blow up. I'll post a picture once it gets here. If all goes well the days of me unprofessionally and uneffectively swirling around beakers will soon be over.

New Rotavapor with custom glassware!

About a month ago I got a steal of a deal on a Buchi Rotavapor R-200 on eBay.




Unfortunately, the seller didn't package the glassware appropriately and wrapped it in some bubble wrap and placed it in the same box as the heavy base unit. The receiver flask, the condenser, and the end catch assembly were DOA.



Honestly, most of the value was it being a complete package with really interesting, high-quality glassware, so it was a huge disappointment. Luckily the package was insured by FedEx, so he's either going to reimburse me out of that, or refund most of what I paid because of the damage.

I reached out to Adams & Chittenden who said the receiver should be a very routine repair, so should have that back in a month. I then acquired a new condenser, receiver flask, a few new evaporation flasks, and a Woulff bottle (still waiting on that). Here's what it looks like with the replacement parts and some cleaning



I'm really excited to get the fixed receiver flask back. I believe it's 2000ml and I'm not really sure the purpose of the valve on top and the vent on the side. I suspect it's for emptying the receiver without losing vacuum? I haven't been able to find anything else like it to even compare.

I also really like the 2L evaporation flask, it was new in box from a guy who bought out all the old surplus from when Brinkmann was the sole US distributor. The neck on it has an ID of 34mm, same as the steam duct, and it attaches directly to the steam duct, bypassing the adapter while shortening and widening the distillation path for higher boiling point solvents. I wish I could find more like that in different sizes and it makes me sad that Buchi stopped producing them long ago!



Now I'm trying to address the missing base plate insert for the heating bath, the broken end catch, and the lift mechanism. After many a conversation and back and forth with the Buchi technicians, I managed to social engineer several chapters of their official service manual as well as internal repair protocol documents for specific repairs. Those have been a huge help! I think I may just have to buy a new base unit since none of the parts I need are made anymore... I may just get a R-205 while I'm at it too.

Thanks,

Joe

[Edited on 6/26/2020 by ekilsawkcalbeoj]

[Edited on 6/26/2020 by ekilsawkcalbeoj]

[Edited on 6/26/2020 by ekilsawkcalbeoj]

Quote: Originally posted by Ubya

bro, use smaller images, they fuck up the page

Quote: Originally posted by ekilsawkcalbeoj

Quote: Originally posted by Ubya   bro, use smaller images, they fuck up the page Will do, sorry new here!

thanks

you were really lucky to get an entire unit for cheap, it was sad to hear that pretty much all the glassware was broken. How much were all the repairs?

Quote: Originally posted by Ubya

Quote: Originally posted by ekilsawkcalbeoj   Quote: Originally posted by Ubya   bro, use smaller images, they fuck up the page Will do, sorry new here! thanks you were really lucky to get an entire unit for cheap, it was sad to hear that pretty much all the glassware was broken. How much were all the repairs?

Quote: Originally posted by j_sum1

OK so not glassware but here seemed the best place to post it. Fresh out of box: This has been a long-overdue acquisition. Ceramic top. Rated to 550°C. Good sturdy construction. Hours of productive fun await. And for those interested: https://www.ebay.com.au/itm/New-magnetic-stirrer-high-temp-c...

Quote: Originally posted by Draeger

Not glassware, but following the reasoning of j_sum1. Finally ordered a hot plate stirrer. It's a cheap Chinese one, but it's all I can afford. Just have to hope it stirs and heats as well as it says in the description and that it won't blow up. I'll post a picture once it gets here. If all goes well the days of me unprofessionally and uneffectively swirling around beakers will soon be over.

The stirrer is here.



It came with a broken plug because it was badly packaged. Luckily my father had a spare and is good at soldering so he just attached a new one. Except for that everything was alright.

Stirring works quite well as far as I can tell. Definitely enough for my purposes, at least so far. On fast speed it often splatters, though. Is that normal?

Heating is worse. It takes a while to get to the boiling point of water on half heat and it isn't insulated so the entire device heats up. I'll add some insulation at some point.

I'm unsure what the contraption next to the plate is for. You can take it off, though, so I'll do that until I know what it is. Does anyone know what it is for?

I rate it as alright, hoping the broken plug was a rare event. With two extra stir bars and a discount I got for my first purchase on the website I paid about 52€

[Edited on 2-7-2020 by Draeger]

Quote: Originally posted by Abromination

@draeger, Many of these units sold on Amazon either break quickly or have trouble producing temperatures above 100 degrees. When buying a hotplate it is important to make sure the watt rating is above at least 600.

Quote: Originally posted by Draeger

Stirring works quite well as far as I can tell. Definitely enough for my purposes, at least so far. On fast speed it often splatters, though. Is that normal? I'm unsure what the contraption next to the plate is for. You can take it off, though, so I'll do that until I know what it is. Does anyone know what it is for? [Edited on 2-7-2020 by Draeger]

The splattering is normal, depends a bit of the type/size of the magnet and the size of your container.


Its a built in lab stand, used to clamp glassware, quite convenient that it's built in actually.
Usually the clamps look like this:



Or if you are building a larger setup it can be used to connect it to other stands to stabilize the whole.

[Edited on 3-7-2020 by Belowzero]

[Edited on 3-7-2020 by Belowzero]

DN 150 reactor

I just bought a 4 liter reactor + 5 neck lid on a local website for $80! Came without any damage or chips. It has a large "DN 150" duran flange and the glass is really thick. The ID is about 14.5 cm, OD about 16 cm, 30 cm tall + 15 cm for the lid.

Second photo shows it connected to a vacuum pump to test it.

I have some vacuum and plasma experiments planned for this, but not many idea chemistry-wise. Perhaps a chlorate cell? Does anyone have large-scale reaction suggestions?

Quote: Originally posted by Heptylene

I just bought a 4 liter reactor + 5 neck lid on a local website for $80! Came without any damage or chips. It has a large "DN 150" duran flange and the glass is really thick. The ID is about 14.5 cm, OD about 16 cm, 30 cm tall + 15 cm for the lid. Second photo shows it connected to a vacuum pump to test it. I have some vacuum and plasma experiments planned for this, but not many idea chemistry-wise. Perhaps a chlorate cell? Does anyone have large-scale reaction suggestions?

Sulaiman: Overhead stirring sounds good. Definitely needed for reactions as I doubt my stirbars are large enough for this beast of a reactor. I already have a glass stirrer rod with an impeller which, maybe it fits the chinese stirrer bearings!
I also like the idea of having glass tube to pump liquid in and out. I have a 29/32 thermometer adapter with a teflon joint that actually fits 10 mm tubing, so I might get a couple more for inlet and outlet.

wg48: I actually already have an MMO anode, so lead dioxide is not needed at least for chlorates. Besides I think PbO2 anodes can be made by electrolysis methods. Do you know if the sputtered ones have an advantage over the ones made by electrolysis?

I might try sputtering anyway. Do you know if a roughing pump is sufficient for this? I'm repairing a 2-stage rotary vane pump at the moment, hopefully it will pull down to 1e-5 atm .

Quote: Originally posted by Heptylene

wg48: I actually already have an MMO anode, so lead dioxide is not needed at least for chlorates. Besides I think PbO2 anodes can be made by electrolysis methods. Do you know if the sputtered ones have an advantage over the ones made by electrolysis? I might try sputtering anyway. Do you know if a roughing pump is sufficient for this? I'm repairing a 2-stage rotary vane pump at the moment, hopefully it will pull down to 1e-5 atm .

No I do not know if anodes made by sputtering or other vacuum techniques have an advantage. I can say that potentially they can produce unique materials or unusual forms of compounds that may have desirable properties for anodes. I thought you just wanted to experiment (play)

Sputtering requires some gas pressure to works so a roughing pump may be fine. With single stage pump I have evaporated tungsten from a tungsten rod electrically heated by the current from a one turn secondary of a toroidal transformer. The initial effect is to getter the residual gases and hence improve the vacuum. The film formed was a transparent blue colour (probably an oxide) with good adherence to glass.

You can also improve the vacuum by making a discharge between aluminium electrodes. That also gives an indication of the vacuum. The more defuse discharge covering more of the electrodes indicates a better vacuum. A dark discharge indicates a good vacuum. No discharge a very good vacuum or no vacuum.

You can connect up as much of your glass as you have in a line and create discharge from end to end. it will even discharge thru a wash bottle filled molecular sieves or plastic tubing.

Make certain the last electrode is earthed and is the electrode nearest the pump or the discharge will use the pump as an electrode. That's how I discovered the discharge can go thru a wash bottle filled with sieves I was using as a trap for oil vapour from the pump and water vapour from the chamber.

PS: I found a diagram illustrating how a discharge changes with pressure. Note you only get that type of display with a ballasted DC supply.



[Edited on 7/5/2020 by wg48temp9]

A vacuum drying pistol

Gift from my friend in California

Quote: Originally posted by arkoma

Gift from my friend in California

2 thiele tubes, capillary tubes, and shitload (~40) of those small amber storage bottles.

Thiele tubes and capillary bought from Nashinglass on ebay - I have to admit that the package was very well packed and secured

Quote: Originally posted by outer_limits

2 thiele tubes, capillary tubes, and shitload (~40) of those small amber storage bottles. Thiele tubes and capillary bought from Nashinglass on ebay - I have to admit that the package was very well packed and secured

I received some items from Laboy in China today, and I can say that it is fairly high quality glassware. Recommended from that aspect.

The internal aspect of order was well packed, and the exception is that they utilise incredibly flimsy cardboard for their outer packing, so buyer beware if they are looking at purchasing some of the more delicate pieces from this place. No pieces were broken, but I don't know how.

I picked up an auger funnel, a backup 90mm 1L pore plate funnel (which is very high quality and rings like a bell), and some microscale odds and ends. I don't actually need a new pore plate funnel, but my current one is one of my most heavily used pieces of glassware, and I don't want to have to wait for months if I break it.



[Edited on 25-8-2020 by JJay]

Distillation head for taking off reflux at desired ratio, received just today. 1 good supplier was able to obtain it for me, it was freshly made in lab glass factory. 29/32 ground glass joints for attaching flasks and 14/23 for thermometer (dimensions used widely in my country).

Hi outer_limits, the reseller asked for 8500 CZK which is approx 320 EUR. If I had contacts directly in glassware factory the price would be lower, but I was really very happy that this reseller was able to obtain this rare piece of glass for me. He has been waiting for 3 months using an official way without any sign of result, so then he asked directly the glass worker (good old contact) then he got the glass immediately. I would pay even more, glass is always much more valuable than money I believe that the most difficult part in creating the piece was to create the loop. Connecting 2 ends of glass to create 1 connection is not so difficult, but creating 2 connections simultaneously (connecting 4 ends) is a masterpiece (I cannot imagine how to do it using only 2 hands, perhaps it required 2 workers to do it synchronously).

[Edited on 5-9-2020 by Fery]

I finally have a heating mantle and it works like a charm!

The glassware I ordered from Aliexpress arrived a few days ago. Deschem's famous foam coffin works like a charm every time. Also ordered a few glass beakers and graduated cylinders to start off my home chemistry glassware set.

Not glass, but I just received a new 50 mL crucible from Science Equip, very happy with it.

Quote: Originally posted by Fery

Distillation head for taking off reflux at desired ratio, received just today. 1 good supplier was able to obtain it for me, it was freshly made in lab glass factory. 29/32 ground glass joints for attaching flasks and 14/23 for thermometer (dimensions used widely in my country).

Most recent deschem order. The foam sarcophagus worked well, as always



My old condenser column broke and I needed more round bottom flasks, so I decided to get a whole distillation apparatus, as it was cheaper than a Liebig condenser and two flasks. Plus I got some 500ml beakers, because I didn't have anything over 350ml

[Edited on 1-10-2020 by itsallgoodjames]

I was unable to fractionate some of my small-scales synthesis with usual full-scale separate Vigreux column and Claisen head. Feeling of unfinished jobs is devastational - my fridge contains several bottles of crude, not purified products. So, today eventually I've got this.

Isn't she a beauty?
OK so it's nothing big, but the number of times I've decided I'm going to try extracting limonene only to remember that my only stillhead is my vigreux is getting a bit silly so I'm glad this showed up.

Quote: Originally posted by paulll

Isn't she a beauty? OK so it's nothing big, but the number of times I've decided I'm going to try extracting limonene only to remember that my only stillhead is my vigreux is getting a bit silly so I'm glad this showed up.

Quote: Originally posted by Cou

i ordered 2 erlenmeyer flasks from laboyglass.com on Oct 18, 2020 and still hasn't been shipped.

Anschütz-Thiele receiver/fraction cutter

I just got an Anschütz-Thiele receiver, which is the german version of the Perkin triangle. I've been trying to find one for some time now since they cost an arm when new. Thankfully, ebay exists and an opportunity finally presented itself

This is actually a really useful piece of equipment: it allows the collection of many fractions during vacuum distillation without having to bring the whole apparatus back to atmospheric pressure. Normally you are limited to 3-4 fractions if you're using a cow receiver, but not with this!

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