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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The crystalline form of boric acid is usually recommended, as it is easier dissolve than the powder.
Let us know how you get on with that particular formula Pete.