Quote:
Originally Posted by pentaxpete
Very interesting Mr Lostlabours: My Microphen Formula is :
Sodium Tripolyphosphate 3.4 gms
Sodium Sulphite anhydrous 100.0 gms
Sodium Metabisulphite 0.65 gm
Hydroquinone 5.0 gms
Phenidone 0,2 gm
Boric Acid 2,7 gms
Borax 6.8 gms
Potassium Bromide 1.0 gm
Water to 1 litre
NOTE : I have both 'powder' Boric Acid and 'Crystalline' and Formula does not state WHICH one so I used the 'powder' one.
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That's the formula for the powder version of Autophen with the slight adjustment in the buffering (compared to the liquid version) to compensate for the metabisulphite used in Part A
Essentially it's a PQ version of ID-11/D76 and not Microphen.
Ian