analytical chemist
   
Posts: 7463 Joined: 21-May-2008 Last visit: 14-Jan-2025 Location: the lab
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a certain grackle finally got one  http://cgi.ebay.com/ws/eBayISAP...em&item=220649148276"Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
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DMT-Nexus member
Posts: 2854 Joined: 16-Mar-2010 Last visit: 01-Dec-2023 Location: montreal
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Schnazzy item - be sure to congratulate your grackle! JBArk JBArk is a Mandelthought; a non-fiction character in a drama of his own design he calls "LIFE" who partakes in consciousness expanding activities and substances; he should in no way be confused with SWIM, who is an eminently data-mineable and prolific character who has somehow convinced himself the target he wears on his forehead is actually a shield.
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DMT-Nexus member
Posts: 1538 Joined: 24-Nov-2009 Last visit: 31-Aug-2024
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Ummm... Can I use it to make coffee, too? Some things will come easy, some will be a test
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DMT-Nexus member
Posts: 257 Joined: 31-Dec-2009 Last visit: 25-Jan-2025 Location: outer limits
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Benzy ,,,you never cease to amaze me!!!Much love....lol Aetherbound In all chaos there is a cosmos, in all disorder a secret order..Jung
All above writing with the exception of Dr. Jung's quote is pure mushroom encrusted cowpie!
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DMT-Nexus member
Posts: 582 Joined: 11-Jun-2010 Last visit: 23-Sep-2013 Location: that warm fuzzy place... hyperspace
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dam ben. big spender lol. can i borrow some cash? -Close your eyes, See the light, and feel the sunshine in the shade
~All views, ideas and opinions of this user are strictly fictional and in no way represent an act done in reality.
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DMT-Nexus member
Posts: 245 Joined: 02-Feb-2009 Last visit: 19-Jun-2013
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You can't have that! You're going to jail!
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No.. that can't be...
Posts: 493 Joined: 21-May-2010 Last visit: 04-May-2024 Location: The assylum
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Definitely a nice way to go for evaporation and reclamation of solvents... I want a lot of different toys in my toy box that I will have to take some time in acquiring. Everything mentioned herein has been deemed by our staff of expert psychiatrists to be the delusional rantings of a madman who has been treated with Thorazine who is hospitalized within the confines of our locked facility. This patient sometimes requires the application of 6 point leather restraints and electrodes at the temples to break his delusions. Therefore, take everything mentioned above with a grain of salt...
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analytical chemist
Posts: 7463 Joined: 21-May-2008 Last visit: 14-Jan-2025 Location: the lab
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the bird used one back in the day in polymer synthesis, the rotovap leaves behind beautiful crystals in the spinning flask. very familiar with using them this is like an appliance. many possibilities, from homebrew alcohol distillation, essential oil purification, to recrystallization. "Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
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DMT-Nexus member
Posts: 106 Joined: 10-Mar-2013 Last visit: 01-Sep-2021
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benzyme wrote:..this is like an appliance.. Found an older one  With some missing parts. Would like to ask some questions about it to the more experienced. - need to buy tubes to connect the vacuumpump. Does it matter in respect to the used solvents what material it is made of? - the specs of the pump are: 34l/min/ultimate vacuum 8mbar abs/max contin pressure 1 bar/ permiss temperat +5...+40C That means that a boiling point will be brought down with 30C? hexaan-> from 69 to 38 What does abs means? +40C ? - there is no manometer with it or any regulator. Is this necessary? - there is no clip to secure the evaporator ball flask to the tube of the rotavap. is this neceessary? Would be great if someone could help me with these questions.... "All is knowing."
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analytical chemist
Posts: 7463 Joined: 21-May-2008 Last visit: 14-Jan-2025 Location: the lab
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dakkapel wrote:
- need to buy tubes to connect the vacuumpump. Does it matter in respect to the used solvents what material it is made of? no. tygon tubing is standard.
- the specs of the pump are:
34l/min/ultimate vacuum 8mbar abs/max contin pressure 1 bar/ permiss temperat +5...+40C
That means that a boiling point will be brought down with 30C? hexaan-> from 69 to 38
What does abs means? absolute.
+40C ? maximum ambient operating temperature.
- there is no manometer with it or any regulator. Is this necessary?
a regulator of some sort is recommended
- there is no clip to secure the evaporator ball flask to the tube of the rotavap. is this neceessary? yes
"Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
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DMT-Nexus member
Posts: 106 Joined: 10-Mar-2013 Last visit: 01-Sep-2021
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benzyme wrote:dakkapel wrote: - need to buy tubes to connect the vacuumpump. Does it matter in respect to the used solvents what material it is made of? no. tygon tubing is standard.
(...)
- there is no clip to secure the evaporator ball flask to the tube of the rotavap. is this neceessary? yes
Thank you so much! I am working hard to get it working... Maybe you want to answer another question for me? I have a vacuum membrane pump but the woulfe's bottle is missing. How important is a woulfe's bottle? Secondly, I want to use a round-bottom flask for evaporation. But I see on pictures that a more conicly form flask is been used. Does it matter? "All is knowing."
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analytical chemist
Posts: 7463 Joined: 21-May-2008 Last visit: 14-Jan-2025 Location: the lab
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sounds like it's used as a vacuum vapor trap. it's not critical "Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
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