F-34

[nworth]

nworth submitted a new resource:

(there was a url link here which no longer exists) - F-34

Water 700 ml
Ammonium thiosulfate soln. (58%) 185 ml
Sodium sulfite, anh. 10 g
Sodium hydrogen sulfite 8.4 g
Water to make 1 l

PH = 6.5 at 27C; density = 1.086

I believe a fixer should be slightly acid for decent longevity in use, but not so acid as to do harm to the image or be hard to wash out. Kodak F-34 answers these requirements. The fixer was originally used in the motion picture industry to fix 5247 color negative film (2 minutes at 100F in a machine processor, with...

(there was a url link here which no longer exists)

 

[Sean]

Comments from previous article system:

By Tom Hoskinson - 06:13 AM, 09-27-2005 Rating: None
Sodium Hydrogen Sulfite (NaHSO3) is also known as Sodium Bisulfite (metabisulfite)

By Tom Hoskinson - 06:20 AM, 09-27-2005 Rating: None
F-34 is similar (but not identical) to Ryuji's Neutral Rapid Fixer.

ammonium thiosulfate 120g(or 60% solution 200 ml)
sodium sulfite 15g
sodium metabisulfite 5g
water to make 1.0 liter
target pH 7.0 plus/minus 0.5