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Author: Subject: latest glassware purchase
JJay
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[*] posted on 11-1-2017 at 16:26


That does look like a nice one!



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JJay
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[*] posted on 17-1-2017 at 13:01


For those times when three necks isn't enough. This flask appears to be the Chinese "GG-17" brand, which I associate with quality flasks. It was the cheapest one on eBay too.

I've been trying to keep all of my adapters and condensers 24/40 and all of my flasks 24/29.

IMG_20170117_115046.jpg - 378kB

I also got a funnel and decided to jump on the short path condenser bandwagon.

I've been giving some thought to getting a 2L bulb for doing steam distillations.


[Edited on 17-1-2017 by JJay]




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Db33
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[*] posted on 17-1-2017 at 14:41


haha, i always ask myself, WHEN is 3 neck not enough! its beautiful but i dont think id ever need a 4 neck. If i do thats what i have my claisen for! lol
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JJay
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[*] posted on 17-1-2017 at 14:49


If you're doing reflux and addition with overhead stirring while monitoring the temperature, it is desireable to have four necks, although you could possibly get away with three necks and a Claisen adapter or perhaps by doing additions through the reflux condenser.

My other 3000 mL is starting to show a lot of scratches and I was worried that some of them were in a star crack pattern, so I figured I should get another 3000 mL and thought I might as well get one with four necks.

[Edited on 18-1-2017 by JJay]




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Sulaiman
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[*] posted on 18-1-2017 at 01:07


I do not know how you will manage without a fifth neck, for 'poking' stuff :D

I have been seduced by jointed glassware, so nice and new and shiny

I am 'standardising' on NS24 (was NS10) and I already see how (occasionally) a 3 litre flask could be extremely useful,
and a tree of Claisen adapters does not seem such a good option as a multi-necked flask,
I'm jealous ;)




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Herr Haber
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[*] posted on 18-1-2017 at 04:31


Ow wow...

I just received a few items that were on backorder at my supplier. I originally placed the order in September !

So I got 2 x 30 ml brown glass vials with a solid PTFE disc as a liner (muuuch better than expected)
2x20ml clear glass vials with PTFE liner. Those are beautiful, I might get more to display the results of experiments.
And last but not least a pricey precision 1ml pipette

I feel bad that the seller had to pay DHL more than the value of the merchandise. The first part of my order arrived in 2 packages because of some items that were already on backorder and even got some freebies. Dang it's nice to work with honest people !
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JJay
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[*] posted on 18-1-2017 at 12:08


Quote: Originally posted by Sulaiman  
I do not know how you will manage without a fifth neck, for 'poking' stuff :D

I have been seduced by jointed glassware, so nice and new and shiny

I am 'standardising' on NS24 (was NS10) and I already see how (occasionally) a 3 litre flask could be extremely useful,
and a tree of Claisen adapters does not seem such a good option as a multi-necked flask,
I'm jealous ;)


Yep, I need another neck with a septum for adding stuff like tert-butyllithium and also one for a pressure-equalized powder addition funnel with an auger... and one for a long gas inlet adapter for introducing gases into the reaction. Did I mention that I need to measure the pH as the reaction proceeds? :D

I bought the 4-neck flask from Nanshin. It was an excellent deal and very well packed with fast shipping.




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JJay
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[*] posted on 18-1-2017 at 12:25


Quote: Originally posted by Herr Haber  
Ow wow...

I just received a few items that were on backorder at my supplier. I originally placed the order in September !

So I got 2 x 30 ml brown glass vials with a solid PTFE disc as a liner (muuuch better than expected)
2x20ml clear glass vials with PTFE liner. Those are beautiful, I might get more to display the results of experiments.
And last but not least a pricey precision 1ml pipette

I feel bad that the seller had to pay DHL more than the value of the merchandise. The first part of my order arrived in 2 packages because of some items that were already on backorder and even got some freebies. Dang it's nice to work with honest people !


PTFE-lined vials are always nice to have. I need to get some precision pipettes too....




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Sulaiman
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[*] posted on 18-1-2017 at 13:55


'scuse my ignorance but what precision is a precision 1ml pipette ?

if 20 drops = 1 ml how do you achieve precision ?
https://en.wikipedia.org/wiki/Drop_(unit)




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[*] posted on 18-1-2017 at 15:11


I've seen ones accurate to 0.01 ml advertised.

The ones I've seen are built like an autopipette.

Don't know how accurate the simpler ones get.

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[*] posted on 18-1-2017 at 15:56


Has anybody else experienced that mini-heart attack when unpacking new glassware and the bubble/shrink wrap crinkles just enough to make you think you broke the glass? :o
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[*] posted on 19-1-2017 at 03:28


Quote: Originally posted by Sulaiman  
'scuse my ignorance but what precision is a precision 1ml pipette ?


Sorry, poor choice of words, it was misleading.
It's a class A, 1ml volumetric pipette
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Db33
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[*] posted on 19-1-2017 at 07:58





this order took over a month to arrive but im so syked... i love this dimroth/reflux condenser. Also is a drying tube, and a piece of glassware im going to use with my thermocouple device.
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[*] posted on 19-1-2017 at 13:35


My much anticipated short path condenser came today, only to arrive broken:(! I'll be asking for them to send a replacement, even though it was only US$18:P

Looks okay though considering the low price and Chinese seller.

IMG_0421.JPG - 1.4MB

Still usable but there are some cracks around the spot the drip tip broke off which are concerning.

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JJay
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[*] posted on 19-1-2017 at 14:01


Ouch. I have one of those arriving any day now. I paid $17 U.S. I wonder if mine will have the tiny fractionating column.



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