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In Reply to: RE: Thanks for the good info posted by Rushton on October 22, 2016 at 19:58:54:
My sense of the chemistry was telling me that alcohols are not surfactants, but I was too insecure about it to make that assertion. Now I just looked up the topic of surfactants, and indeed nothing is said about alcohols as a class. Surfactants lower surface tension; I don't think alcohols do that, albeit pure alcohol probably has lower surface tension than pure water. If you add alcohol to water, I believe the alcohol would evaporate at a faster rate than water, but I am not sure that has much of an effect on the evaporation rate of the water per se. The nonionic detergent is a surfactant for sure, however.
FWIW, I had already decided that if I were to purchase David's apparatus, I would only wash 4 LPs at a time. I agree that 8 is pushing the system a bit too hard, in that size tank. Not so much because of the tank volume but because of the space between LPs when you load 8 of them (the thickness of David's space pucks). It looks too narrow to permit a good cavitation effect; I would use two spacers between LPs and load only 4 at a time. That's still way faster than I can go with the HW17.
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Follow Ups
- RE: Thanks for the good info - Lew 17:03:43 10/23/16 (2)
- RE: Thanks for the good info - Rushton 17:19:49 10/23/16 (1)
- I agree about alcohol. It does reduce surface tension slightly, and - alaskahiatt 17:59:11 10/23/16 (0)