Throb
(Stranger) 05-16-00 18:25 No 5333 |
24/40 or 19/22 | Bookmark | ||||||
SWIM is about to get a distillation apparatus but he don't know if 19/22 or 24/40 is better for him. He told me it was for small scale experiences. What's the difference between 19/22 and 24/40? I'm not talking about the difference between the two size but the difference between applications and what you can do. Danke, Throb |
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deltaT (Stranger) 05-16-00 18:58 No 5355 |
Re: 24/40 or 19/22 | Bookmark | ||||||
Ah, not application but what you can do. In that case SWIMS should get 24/40. And for other reasons. 24/40 is truly the standard in the industry. Most other glass pieces seem to be so much more readily available in the 24/40 size. |
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Osmium (Moderator) 05-17-00 04:18 No 5653 |
Re: 24/40 or 19/22 | Bookmark | ||||||
Attention non-US bees: don't buy 24/40 or 19/22. Such glassware is occasionally available, but those joint sizes aren't used often in Europe. Think 29/32. Or 14/23 for small scale. |
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Rhodium (Chief Bee) 05-17-00 15:31 No 5862 |
Re: 24/40 or 19/22 | Bookmark | ||||||
I can agree that 24/40 is pretty uncommon, but not so with 19/22. I believe 29/32 and 14/23 setups should be completed with a 19/22 one to make sure one has a setup for every reaction size. If I would have to use only one size setup, I would choose 19/22. The cutest setups are about 10/20 in size, but they are so rare I've only seen two in my life. http://rhodium.lycaeum.org |
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budwizard (Stranger) 05-18-00 10:17 No 6190 |
Re: 24/40 or 19/22 | Bookmark | ||||||
This cat that used to be a dog left me a note that said that 24/40 glassware was too big for the reactions he tried, especially distillation, unless you're distilling like more than 1L. In smaller volumes the cat/dog said the vapor tended to have problems. Remember as you distill to switch to smaller sized flasks as the volume in the distilling flask gets too low. THE BUDWIZARD |
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randolph_carter (Stranger) 05-18-00 12:36 No 6238 |
Re: 24/40 or 19/22 | Bookmark | ||||||
the lizards on callisto seem to concur with the 19/22(occasionally labeled 19/38...go figure...)size.... the usage of that size is great tasting and less filling.... not as much waste and distillation column "holdup".... but as has been mentioned not "everything" is available in 19/22..... but then not "everything" is available in 24/40 either... or 14/20 for that matter... in 19/22 sets.... max size normally is 500ml flask without adapter... swim found a 1l flask in "clearseal joints".... swim has seen 5l 24/40 reaction flasks attached to an otherwise 19/22 sized "set" in dreamscapes that for all intents and purposes were fine in a dream within a dream.... just light on a beam..... "remember little ones, love is real,not fade away, so pass some on today......" |
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CherrieBaby (Stranger) 05-24-00 14:30 No 8883 |
Re: 24/40 or 19/22 | Bookmark | ||||||
yes - there does seem to be a difference between the USA and the rest of the world! - size matters. In the UK 24/29 is a handy common size. 29/32 is rare - it usually has to be specially ordered. |
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mnm (Hive Bee) 05-28-00 06:59 No 10333 |
Re: 24/40 or 19/22 | Bookmark | ||||||
Kids around here say 24/40 all the way! -mnm |
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harry_lime (Stranger) 06-01-00 11:05 No 12454 |
Re: 24/40 or 19/22 | Bookmark | ||||||
Same with Aus 24/29 |
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Fuchem (Hive Bee) 06-03-00 07:22 No 13247 |
Re: 24/40 or 19/22 | Bookmark | ||||||
One benefit of going 19/22 is price. On Ebay, 19/22 goes for lots less almost every time. It is a great size for short naps and small dreams. For the true microscale dreamer, the Kimble microscale kits are the cutest thing ever! |
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blondie (Hive Bee) 11-18-02 16:14 No 380938 |
question about 14/23 | Bookmark | ||||||
what is the largest flask size that would be practical to use with 14/23 sized quickfit joints - for both distillation and reflux? some manufacturers carry only small pear shaped flasks 20-50ml in 14/23 while others have them up to 500ml. is there any reason why a 14/23 setup could not be used with a 250 or 500ml rb? |
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pickler (Greenhorn) 11-18-02 18:45 No 380994 |
Blondie, you gotta think about getting that ... | Bookmark | ||||||
Blondie, you gotta think about getting that stirbar into the flask. Try having a 3l rbf with a 19/22 joint. Youwon't be able to get the proper size stirbar in there to stir it. Swim had this happen to him in the very begining. Bought all 19/22stuff and realized it's only good upto a certian size. 24/40 is a good size for your average bee. I went into the business for the money, and the art grew out of it.-Charlie Chaplin |
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terbium (Old P2P Cook) 11-18-02 21:43 No 381062 |
Quickfit? | Bookmark | ||||||
14/23 sized quickfit joints What is a "quickfit" joint? Is it the same as "Standard Taper"? Baseline Does Not Exist. |
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BlingBling 11-19-02 03:16 |
45/50 rb's n' condensors.
(Rated as: insignificant) |
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pHarmacist 11-19-02 03:20 |
Isn't The Couch aimed for other B.S.?
(Rated as: insignificant) |
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BlingBling (Hive Bee) 11-19-02 03:24 No 381150 |
Sorry. | Bookmark | ||||||
24/40 is great if you live in North America. |
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blondie (Hive Bee) 11-19-02 21:15 No 381472 |
14/23 | Bookmark | ||||||
Madmax and Pickler thanks for the good advice - seems like i am going to have to stretch the budget. Terbium, I meant generic glassware with standard taper when i wrote 'quickfit' - however checking google i see that this is a actually a manufacturer. thanks for the clarification. |
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PolytheneSam (Master Searcher) 11-20-02 03:27 No 381537 |
You can use adapters for connecting together the ... | Bookmark | ||||||
You can use adapters for connecting together the different sizes. http://www.geocities.com/dritte123/PSPF. The hardest thing to explain is the obvious |
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methium (Hive Bee) 12-16-02 00:51 No 389936 |
yes | Bookmark | ||||||
Hell just go ball and socket and eliminate the "size" issha altogether. By the time you finish reading this, another person will want to learn to make meth. |
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terbium (Old P2P Cook) 12-16-02 06:41 No 389967 |
Ball and socket ... | Bookmark | ||||||
have sizes also which still need to be matched up. Baseline Does Not Exist. |
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