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Glycin hydroxide developer for tray use.

Sodium sulphite5grams
Sodium hydroxide16grams
Water to make1liter
Mix chemicals in order.

For very badly underexposed negatives or for strong contrast, use full strength. For softer negatives, dilute with water up to 1:5.

This is an excellent formula for “stand-by” purposes. If a negative shows no image with a regular tray developer, it can be rinsed for a few minutes in plain water and transferred to a glycin-hydroxide bath and if there has been any reasonable exposure a usable negative will result. The temperature should he kept below 18.5°C and formalin (1–2 drops per 30 mililiters of developer ) should be added just before using to prevent undue emulsion-softening.