Today, just as swim was about look for desighns to make a ghetto cold-trap, a generous bee just so happened to pm him with a simple desighn:
-Two containers (stainless steel, with lids that form a vacum seal) one small, that fits inside of the larger one, still leaving room for ice water/or dry ice-acetone
- the lid of the smaller container is drilled so as to accomodate two brass 'barbs' that will bee attached and then soldered on.
- the cold trap is then applied inbetween the rig (the distillation set-up) and the vac pump.
a few questions about this...
can mason/canning jars bee used for the container which will bee subjected to the vacuum? Swim already knows that the jars arent any good for heated rxns, he just wonders beecause they are made to withstand a certain amount of vacuum (when hot shit cools in them they form their super-tight seal via vacuum) and they are often stored for extended periods of time in the freezer under these conditions by happy home-makers everywhere.
Swim thinks it would bee so convieniant to bee able to use them fancy assed lids- which are cheap as hell.
- Swim also wonders if its better to have a larger trap or a smaller trap. Obviously a larger trap will bee able to hold more condensed solvent/or whatever is beeing vac distilled, but a smaller one, swim thinks, would maintain a colder internal temperature as there would bee less space where things would have a chance to bee warmer. (Its easier to freeze a cup of water as opposed to a gallon of water).
Any thoughts, ideas or suggestions?
Also, another newbee pump question, are the threaded adapters that usually come with the pump ok to directly attach the hosing to? Or should a barb bee purchased for this as well (swim is concearned with leaks).
thanks!
when someone asks what the sound of one hand clapping sounds like, you should smack them in the ear.
