David A. Goldfarb said:I like Sistan. Is A&O going to manufacture it? In any case, I've got a nearly full 1 litre bottle, which should last me until A&O goes out of business and someone else buys them out who eventually goes out of business until they get bought out by a group of investors.
David A. Goldfarb said:I like Sistan. Is A&O going to manufacture it? In any case, I've got a nearly full 1 litre bottle, which should last me until A&O goes out of business and someone else buys them out who eventually goes out of business until they get bought out by a group of investors.
Photo Engineer said:I was not aware that Sistan had any surfactant in it, and I also thought that it was recommended that the print be rinsed after use of Sistan. Since Sistan contains a thiocyanate salt, I would personally want to rinse it before drying to prevent crystals from forming if nothing else. I'm not sure of the dilution however. If dilute enough, there would be no problem at all.
Konical said:Good Morning, Chazzy,
As far as I know, the life of Photo-Flo is somewhere between indefinite and infinite, so just get a few bottles now and store them for a lifetime of use. The amounts required are extremely small, so even a small bottle lasts almost forever.
The Photo-Flo dilution recommended by Kodak is, in my experience, far, far too concentrated. For me, a couple of drops per 8-ounce tank or a tiny fraction of a capful in a quart is very adequate.
Konical
disfromage said:Edwal LFN, I like it better than Photofo.
David A. Goldfarb said:I just checked over in the chemical closet, and I've got two bottles of Sistan. One lists "wetting agent" among the ingredients, and the other reveals that wetting agent to be a-[4(1,1,3,3-Tetra methyl butyl) phenyl]-w-hydroxy-poly(oxy-1,2-ethane diyl). I'll take artspeak over organic-chemistry-speak anyday.
David A. Goldfarb said:I just checked over in the chemical closet, and I've got two bottles of Sistan. One lists "wetting agent" among the ingredients, and the other reveals that wetting agent to be a-[4(1,1,3,3-Tetra methyl butyl) phenyl]-w-hydroxy-poly(oxy-1,2-ethane diyl). I'll take artspeak over organic-chemistry-speak anyday.
Jordan said:Interestingly, there are a lot of structural similarities between Triton X-100 and Nonoxynol, a common topical spermicide. I think Nonoxynol's mode of action is also as a surfactant. Now let the jokes begin.
eumenius said:Oh yeah, almost every buffer solution for cell disruption (DNA and protein extraction, etc.) contains some kind of non-ionic mild detergents, usually Triton X-100 or Tween 20/80.
David A. Goldfarb said:The original instructions for Sistan called for 50ml/l, but many found that it left a residue and used half that, which was Ctein's recommendation, and they eventually revised the instructions to reflect that practice. I've been using it at 25ml/l for a few years, and it seems to be an effective product.
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