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Because metol is relatively toxic and can cause skin sensitisation, modern commercial developers often use phenidone or dimezone S (4-hydroxymethyl...

Pyrogallol or Pyrogallic Acid is a developing agent often used for its tanning qualities. It most famous use of recent times was by Gordon Hutching...

D100 B&W Paper Developer for use in professional labs Package consists of  5L of concentrate to make 25L Dilute 1 + 4

Sodium Hexametaphosphate or Calgon, has the property of holding calcium and magnesium salts in solution, even when boiling, making it a great water...

Use as either a rapid access process or a traditional one. For Rapid Access Process - make one litre of tank solution, add 60 ml of starter and 6...

This bleach replenisher solution is designed for Rapid Access C41 Process Sold in box of 2 x 5L tanks Has a replenishment rate of 5 ml/fi...