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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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[*] 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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[*] 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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[*] 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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[*] posted on 21-1-2017 at 11:06


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 ;)


I had a five neck flask, and its nice, but when you don't NEED five necks you end up with more stoppers to wash. The problem with trying to standardise glassware is that you always end up requiring a selection of sizes (notice how the flask below has a B24 centre neck, two B19 necks and two B14 necks). Standardised assemblies are best made in B10 or B14 where all parts can be had in a single size.

5-neck flask.jpg - 1.3MB
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[*] posted on 21-1-2017 at 12:32


New labware came today!

Second image is all my 24/40.

1x1000ml RBF
2x500ml RBF
4x250ml RBF
1x150ml RBF
1x100ml RBF

2x250ml Erlenmeyer
1x125ml Erlinmeyer

Straight drying tube
180 drying tube
Straight vac adapter
Bent vac adapter
Rubber thermometer adapter
Teflon thermo adapter
2 distilling adapters
2 connecting adapters
reaction tube
125ml addition funnel
500ml sep funnel
coldfinger condenser
2x 200mm leibig condensers, one with tines for packing
200mm vigeroux column
4x hollow stoppers

I could use some more flasks, with multiple necks!

FB_IMG_1485029675687[1].jpg - 1.6MB FB_IMG_1485030288597[1].jpg - 1.8MB

[Edited on 1/21/17 by PirateDocBrown]
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[*] posted on 21-1-2017 at 21:42


Barn find...............!!

Found this sitting in some old hippy's shed up in the mountains.


DSCN0021.JPG - 2.5MB


Came with no flasks and no power leads but l finally got it together.
Just serviced it and got it going for the first time tonight. PWO.
Just need some vacuum now.

All in, €225............... I'm a very happy man this evening............. :cool:


/CJ




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JJay
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[*] posted on 24-1-2017 at 16:55


It has some tiny bubbles at the joints, but for 17 USD including shipping, I'm not complaining.

IMG_20170124_154740.jpg - 444kB




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[*] posted on 24-1-2017 at 18:39


Jjay -- yours has a little vigreux too. I wonder if mine will as well. I guess I will know in a couple of days.
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JJay
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[*] posted on 24-1-2017 at 19:58


Yep. It's hard to know for sure at this point, but it looks likely that yours will have one too.

I don't think I'll use mine for tonight's steam distillation, but I can think of a lot of uses for it.




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[*] posted on 24-1-2017 at 21:27


Well that didn't take long. Mine has a vigreux as well. It seems that there are a few of these on the market at the moment. Mine also came with a broken drip stem. :(
On the plus side, I have found Chinese suppliers to be good about resending stuff in the case of breakages. And then I will have two, but one unsuitable for anything that requires a vacuum or is too volatile.
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JJay
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[*] posted on 24-1-2017 at 22:53


That is unfortunate about the drip stem. Mine was extremely well packed and didn't appear to have been molested by customs. I'm sure you'll get a refund or a replacement.

I've never seen an item with bubbles at the joints break under a vacuum except at high temperature, so I think mine will be OK in a vacuum as long as I keep things under 200 C. I'm not sure it's a good choice for distilling sulfuric acid, though.





[Edited on 25-1-2017 by JJay]




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[*] posted on 27-1-2017 at 14:46




IMG_20170127_134336.jpg - 375kB




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[*] posted on 27-1-2017 at 17:28


JJay: Those are nice looking gas washing bottles. What size are they, and where did you get them?
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