TF-3 Fixer
Alkaline fixer for use with PMK and other staining film developers.
Recipe
| Chemical | Amount |
|---|---|
| Ammonium thiosulfate (58-60%) | 800 ml |
| Sodium sulfite (anhydrous) | 60 g |
| Sodium metaborate (Kodalk) | 5 g |
| Distilled water to make | 1000 ml |
Mix chemicals in the listed order.
Usage
Dilute 1+4 for working solution for both film and paper. Fix film for two times the clearing time. Fix paper for 2 minutes.
Comments
This formula is faster than older hypo-based fixers but takes longer than acid-based fixers. Keeps for 3 months as stock solution.