| Pages:
1
2
3
4
..
20 |
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
That does look like a nice one!
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
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.
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]
|
|
|
Db33
Hazard to Others
Posts: 206
Registered: 25-11-2016
Member Is Offline
Mood: No Mood
|
|
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
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
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]
|
|
|
Sulaiman
International Hazard
Posts: 3692
Registered: 8-2-2015
Location: 3rd rock from the sun
Member Is Offline
|
|
I do not know how you will manage without a fifth neck, for 'poking' stuff 
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 
CAUTION : Hobby Chemist, not Professional or even Amateur
|
|
|
Herr Haber
International Hazard
Posts: 1236
Registered: 29-1-2016
Member Is Offline
Mood: No Mood
|
|
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 !
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
Quote: Originally posted by Sulaiman  | I do not know how you will manage without a fifth neck, for 'poking' stuff
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?
I bought the 4-neck flask from Nanshin. It was an excellent deal and very well packed with fast shipping.
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
| 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....
|
|
|
Sulaiman
International Hazard
Posts: 3692
Registered: 8-2-2015
Location: 3rd rock from the sun
Member Is Offline
|
|
'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)
CAUTION : Hobby Chemist, not Professional or even Amateur
|
|
|
Maroboduus
Hazard to Others
Posts: 257
Registered: 14-9-2016
Location: 26 Ancho Street
Member Is Offline
Mood: vacant
|
|
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.
|
|
|
JnPS
Hazard to Self
Posts: 90
Registered: 29-7-2016
Location: PA, USA
Member Is Offline
Mood: Umpolung
|
|
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? 
|
|
|
Herr Haber
International Hazard
Posts: 1236
Registered: 29-1-2016
Member Is Offline
Mood: No Mood
|
|
Sorry, poor choice of words, it was misleading.
It's a class A, 1ml volumetric pipette
|
|
|
Db33
Hazard to Others
Posts: 206
Registered: 25-11-2016
Member Is Offline
Mood: No Mood
|
|
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.
|
|
|
Geocachmaster
Hazard to Others
Posts: 146
Registered: 5-3-2016
Location: Maine, USA
Member Is Offline
Mood: Corroded, just like my spatulas
|
|
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
Looks okay though considering the low price and Chinese seller.
Still usable but there are some cracks around the spot the drip tip broke off which are concerning.
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
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.
|
|
|
DJF90
International Hazard
Posts: 2266
Registered: 15-12-2007
Location: At the bench
Member Is Offline
Mood: No Mood
|
|
| Quote: Originally posted by Sulaiman | I do not know how you will manage without a fifth neck, for 'poking' stuff
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.
|
|
|
PirateDocBrown
National Hazard
Posts: 570
Registered: 27-11-2016
Location: Minnesota
Member Is Offline
Mood: No Mood
|
|
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](https://www.sciencemadness.org/whisper/files.php?pid=472478&aid=56382) ![FB_IMG_1485030288597[1].jpg - 1.8MB](https://www.sciencemadness.org/whisper/files.php?pid=472478&aid=56384)
[Edited on 1/21/17 by PirateDocBrown]
|
|
|
Corrosive Joeseph
National Hazard
Posts: 915
Registered: 17-5-2015
Location: The Other Place
Member Is Offline
Mood: Cyclic
|
|
Barn find...............!!
Found this sitting in some old hippy's shed up in the mountains.
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............. 
/CJ
Being well adjusted to a sick society is no measure of one's mental health
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
It has some tiny bubbles at the joints, but for 17 USD including shipping, I'm not complaining.
|
|
|
j_sum1
Administrator
Posts: 6320
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
Jjay -- yours has a little vigreux too. I wonder if mine will as well. I guess I will know in a couple of days.
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
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.
|
|
|
j_sum1
Administrator
Posts: 6320
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
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.
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
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]
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
|
|
|
CharlieA
National Hazard
Posts: 646
Registered: 11-8-2015
Location: Missouri, USA
Member Is Offline
Mood: No Mood
|
|
JJay: Those are nice looking gas washing bottles. What size are they, and where did you get them?
|
|
|
| Pages:
1
2
3
4
..
20 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
