Photographers' Formulary 10g Sodium Citrate

• In a sizing/salting solution for Albumen printing• Preservative Note: Albumen prints use good quality paper - preferably-hand made or mould-made watercolor paper - which is soaked in a salt solution (this can be sodium chloride, but is often sodium citrate and ammonium chloride, usually around 4% by weight) and dried. In subdued light, it is brushed with a generous coating of silver nitrate solution (around 12% by weight - sometimes containing a little citric acid) and dried in darkness or very subdued light.