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Author: Subject: latest glassware purchase
JJay
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[*] posted on 11-2-2017 at 03:09


I also have a fairly decent small-scale setup.

IMG_20170211_020620.jpg - 417kB




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JJay
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[*] posted on 17-2-2017 at 19:59


I got a large lab jack, which will hopefully be a nice complement to my small lab jack, which is a nice piece of equipment. The large lab jack seems pretty sturdy, but oddly, when it arrived, one of the corners was bent. Considering the plate steel from which it is constructed, I can only surmise that a customs agent must have decided to run it over with a forklift or to stick the corner into a steel door and malign the jack with a hammer, to check it for explosives no doubt.

So I unbent the corner. You do get what you pay for with these bargain-basement, fly-by-night sellers in some far-off place....




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[*] posted on 17-2-2017 at 20:05


ive been considering a large lab jack for use with my heating mantle/stirrer
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JJay
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[*] posted on 17-2-2017 at 20:20


I don't think lab jacks are absolutely essential for any experiments, but I got tired of looking around for suitable blocks to support my hotplate or heating mantle, and I don't enjoy handling a hot heating device in order to remove it from a flask.



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JJay
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[*] posted on 22-2-2017 at 08:35


Soxhlet, Dean Stark trap, thermometers, two multimeters with temperature sensors, 200 mm sealed immersion tube.



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JJay
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smile.gif posted on 23-2-2017 at 22:20


I ordered a Dean Stark trap-like device and a 2L bulb, not to mention a 40/50 to 24/40 adapter so I can connect normal glassware to the top of the bulb and use my new Soxhlet with a conventional lab condenser

I think I'll be able to use these to do steam distillations of heavy oils with relatively small amounts of water and thus avoid wasting a lot of product in hydrosols. It will be easy to load large amounts of bark/leaves/granules etc. into the bulb, and I suspect it will also make a good bump trap. Plus the apparatus will make a great conversation piece.

s-l1600 (2).jpg - 57kB s-l1600 (3).jpg - 547kB



[Edited on 24-2-2017 by JJay]




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[*] posted on 24-2-2017 at 18:22


If you haven't received your Dean-Stark trap yet, I hope it arrives in 1 piece. Mine arrived in two and so far I haven't found a glassblower to repair it. I did get a refund. The traps with a glass rod spanning the bottom legs to give support seem a good idea, but the ones I've found so fa, are more expensive that the one you show.r
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[*] posted on 24-2-2017 at 18:39


I haven't; I have the receiver pictured above getting shipped to me from Hong Kong, and I have a more traditional Dean-Stark trap with a PTFE stopcock, graduated markings and a smaller reservoir on the way, from a reputable supplier.

Dean-Stark traps aren't really designed to bear heavy loads, so I'm not really sure what to think about the glass rod, but I'm sure it can't hurt. My concern with those is that the ones I looked at that had the glass rod support appeared as though they would only function correctly in a perfectly vertical position, and I might want to use one at a bit of an angle.



[Edited on 25-2-2017 by JJay]




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[*] posted on 25-2-2017 at 15:05


I don't know if the rod affects using the apparatus tilted or not. I think that its main purpose is to provide some protection against twisting motions. The one I received was packed well as far as protecting the glassware as long as it wasn't twisted, but unfortunately it m must have been twisted and broke at the elbow. I hope yours is received in 1 piece! not in a handful as mine was.:D
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JJay
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[*] posted on 27-2-2017 at 15:51


I hope so too. I've had some bad luck shipping in the past, but recently everything has arrived in one piece. eBay sellers are generally good about reshipping broken items. Hopefully you can find another one, if you still want one.

Today I picked up my new Soxhlet extractor. I am going to have to find something to extract.

IMG_20170227_144003.jpg - 446kB

The quality isn't especially great but is actually pretty good compared to the usual Cheap Hong Kongese Glassware of the Month Club items... I didn't buy it from Deschem, but I'd say it's about on par with Deschem's usual level of quality, but the shipping materials were just a cardboard box with some gift wrap paper, and it was opened by Chinese customs. Also, it shipped from Shanghai and was slightly more expensive than the cheapest one available. I'm sure it will work just fine. It will work even better once I get an NS 24 adapter for the top.




[Edited on 28-2-2017 by JJay]




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[*] posted on 1-3-2017 at 21:55


I bought a 500 ml Boston Round bottle at a local health food store. It has a polystyrene cap, but it should work just fine for storing benzyl alcohol.




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[*] posted on 4-3-2017 at 04:05


Ok: not a purchase yet but seriously considering it. I have just made enquiries as to whether I can open an account as a private individual.
Six inch vacuum desiccator.
1354-A.png.jpg - 28kB

It just seemed to me to be something really sensible to have for drying out anything deliquescent. And having a glass vessel that size that I can pull a vacuum on might be useful for other things too.

Oh. And I just blew a hundred bucks on assorted bits of glass at deschem. I'll post pix when they arrive.

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[*] posted on 4-3-2017 at 04:48


They are nice, but I think that you should go slow on this one,

. IF the top joint is a Standard Taper (e.g. 24/40) then there is some flexibility
if not then it is just a drier

. I'm sure that sum1 could make a better, cheaper d.i.y. multi-purpose vacuum chamber.

. are you sure that one is large enough ?
(sounds of evil cackling fading away ...) :P




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JJay
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[*] posted on 4-3-2017 at 05:07


I've thought about getting a vacuum desiccator. I can think of a few situations where I would want one. Most of the ones I've looked at have been the more industrial variety made of aluminum, but glass is likely more sensible for working with something like chromic anhydride.

It's almost certainly more sensible to buy one of those than to desiccate chemicals in your kitchen pressure cooker :)




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[*] posted on 4-3-2017 at 05:41


Good point Sulaiman. I will find out if the joint is compatible with anything else. I don't see why it wouldn't be but it is worth asking.
And glass holds a certain appeal. The ability to see inside is a pretty good feature. Of course I would like one bigger but have you seen the price that these things usually go for?

[Edited on 4-3-2017 by j_sum1]
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[*] posted on 4-3-2017 at 13:00


My steam distillation receiver arrived broken. :(



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JJay
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[*] posted on 6-3-2017 at 20:56


My Dean-Stark trap arrived. The quality is good, and it was very well packed.

IMG_20170306_195134.jpg - 457kB

[Edited on 7-3-2017 by JJay]




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[*] posted on 7-3-2017 at 04:30


The one I received broken was just like that one, but had a glass stopcock. May I ask where it was purchased? Thanks.
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[*] posted on 7-3-2017 at 04:38


My short path condenser arrived today. It was replacement for the one that broke in transit -- just the drip stem broke but it is still functional for some purposes. So now I have two.

This one arrived really well packaged. And it was much higher quality than the previous one: quite a different design and different from the photo. It has a very long drip stem that will reach right to the bottom of a flask. It is a lovely piece of glass.
2017-03-08 08.14.04.jpg - 1MB
Given that I have had a couple of dodgy ebay deals lately, it is quite nice to come out on top: two short paths for twenty bucks. I can abuse the hell out of the broken one and reserve the good one for more serious work.


[edit] added photo


[Edited on 8-3-2017 by j_sum1]
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JJay
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[*] posted on 7-3-2017 at 06:23


It's a Reacware Dean-Stark trap. They sell on eBay under the name "laboratoryglassware" and claim to be a manufacturer. I've never had any problems with them. I'm not 100% sure I can use this with my angled 3-neck flasks without an adapter.... I still want to get a steam distillation receiver because the trap is only 10 mL.

My short path condenser is similar to your long one but has tiny bubbles in the glass. I haven't used it for anything yet....

[Edited on 8-3-2017 by JJay]




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[*] posted on 7-3-2017 at 19:05


Still waiting on a few items... but I received my 1L Squibb non-equalizing addition funnel and a 2L distillation bulb.

IMG_20170307_180111.jpg - 374kB




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[*] posted on 9-3-2017 at 22:35


I got a simple 24/29 straight-through adapter for 50/40 female joints. Now I can use my distillation bulb and Soxhlet extractor with 24/40 glassware.

I haven't decided what to buy next... I have been thinking about commissioning Nanshin to make a couple of custom pieces, and it would be nice to have a vacuum desiccator.

IMG_20170309_212444.jpg - 411kB

[Edited on 10-3-2017 by JJay]




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[*] posted on 11-3-2017 at 11:43


I just got six 10ml serological pipettes, they were gifts actually. :)



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[*] posted on 13-3-2017 at 07:49


I bought a vacuum desiccator. Now I can make some extremely serious beef jerky :D



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[*] posted on 18-3-2017 at 17:08


probably the most overlooked and maybe unnecessary items in a lab but im glad i finally got one... a stir-bar retriever.


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