06-28-03 13:55
No 443103
Would a water aspirator suffice for a vacuum source when synthisyzing lsd? How many bars does an average aspirator pull and how many bars do I need?
(Hive Addict)
06-28-03 17:20
No 443123
If your asking a question on vacuum pressure like this, you obviously dont have the knowledge or skill to synthesize LSD.
Here helpful links on pressure: http://www.repairfaq.org/sam/lasercva.ht
Handy dandy vacuum chart*:
Inches of Hg Torr or
Rel to 1 atm Absolute mm of Hg PSI % Vacuum Microns
----------------------------------------
0.0 29.92 760 14.696 0.0 -
0.40 29.52 750 14.5 1.3 -
10.24 19.68 500 9.7 34.0 -
18.11 11.81 300 5.8 61.0 -
25.98 3.94 100 1.93 87.0 -
27.95 1.97 50 0.97 93.5 -
28.92 1.00 25.4 0.4912 96.6 -
29.52 0.40 10.0 0.193 98.7 -
29.88 0.04 1.0 0.0193 99.9 1000.0
29.916 3.94*10-3 10-1 1.93*10-3 99.99 100.0
29.9196 3.94*10-4 10-2 1.93*10-4 99.999 10.0
29.91996 3.94*10-5 10-3 1.93*10-5 99.9999 1.0
29.919996 3.94*10-6 10-4 1.93*10-6 99.99999 0.1
29.9199996 3.94*10-7 10-5 1.93*10-7 99.999999 0.01
*=from source above.
(Hive Bee)
06-28-03 18:08
No 443130
The aspirator maximum vacuum is equal to the partial water pressure of the water at the operating temperature. That means colder water gives you better vacuum. If you have a table of the partial pressure of the water at different temperatures, you will know the aspirator vacuum at different operating temperatures as well.
My aspirator is a NALGENE, small, works with low water flow, at 25 C you get aproximately 35 mm Hg vacuum. If you need this in other vacuum units, please use a WWW unit converter tool.
Test you aspirator with the water boiling point under the aspirator vacuum. Mine boils water at 31 C.
Most probably you will need to buy connectors or improvise something to connect your aspirator to the water source, a good setup is necessary to achieve good vacuum and to avoid spilling water. I don't know why but this is usually not included.
BTW, I am posting here some basic info on the aspirator so you can learn, but I doubt you can make LSD, the synthesis is very difficult, things are light sensitive, precursors are watched and difficult to obtain, etc.
(Stranger)
06-28-03 22:55
No 443157
So would a vacuum with 0.01 Torr (10 micronTorr) work?
(Hive Bee)
06-28-03 23:02
No 443159
1 Torr = 1 mm Hg, so 10 u Torr = 10 um Hg
Yes, more than enough.
Look at http://www.digitaldutch.com/unitconverte
07-08-03 21:39
(Rated as: insignificant)