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In Reply to: Many many thanks for your helpful post and actual experiences. posted by alaskahiatt on October 21, 2016 at 15:47:19:
Thank you, alaskahiatt. I appreciate you sharing the process you've used for quite a while. Good stuff. It's interesting the Photo-Flo has always been such a mainstay of diy formulas over the years and is now being more and more warned away. The chemist posting in Audio Kharma thread I referenced in my essay had this to say about Photo Flo:"Photoflo is a mixture of mainly Propylene glycol and a smaller amount of octylphenoxy polyethoxyethyl alcohol. Guess what the latter essentially is? Triton! The former is not really necessary (it's what keeps things moist, making films look and rinse spot free)..." [Link]
and
"Photoflo is not recommended because it is mostly propylene glycol (up to 30%, while the surfactant alcohol is merely 5%) which is a coating agent and may remain on your album even after the water washes (i say MAY because nobody seems to have done the study on vinyl records, but it is well-documented as coating on films)." [Link]
The glycol is the reason many formulas are dropping it these days. Why use something that is basically Triton when you can get pure Triton much less expensively and not have the glycol to deal with.
Edits: 10/21/16
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Follow Ups
- RE: Many many thanks for your helpful post and actual experiences. - Rushton 16:17:49 10/21/16 (6)
- I think that Photo Flo 200 was used previously, because people could - alaskahiatt 18:03:09 10/21/16 (5)
- Thanks for the heads-up - bcowen 06:18:50 10/22/16 (0)
- RE: I think that Photo Flo 200 was used previously, because people could - Rushton 19:36:49 10/21/16 (3)
- The bottle is Low density Polyethylene or #4. See the link below. - alaskahiatt 21:51:38 10/21/16 (2)
- RE: The bottle is Low density Polyethylene or #4. See the link below. - Rushton 22:02:18 10/21/16 (1)
- Okay, I filled the bottle with water and watched water coming out of - alaskahiatt 01:16:13 10/22/16 (0)