Term - Preservative
|Preservative||SWPP and BPPA Photographic Glossary|
Saturday 29th November 2014
The chemical, commonly sodium sulfite, used in developing solutions to prevent rapid oxidation of the reducing agents in use.
Information provided by: SWPP BPPA
SWPP & BPPA, 6 Bath St, Rhyl, LL18 3EB