Photography. Processing chemicals. Specification for ammonium thiosulfate solution Ingestion-build-81111 Acceptance tests

Acceptance tests

BS EN 60870-5-4 is the fourth subpart of the fifth part of the multiple series that applies to telecontrol equipment and systems with coded bit serial data transmission for monitoring and controlling geographically widespread processes

and fluids

BS EN 1020 is a European Standard which specifies the requirements and test methods for the safety and efficiency of nondomestic gas-fired air heaters having a fan to assist the transportation of combustion air and/or flue gases

Photography. Processing chemicals. Specification for ammonium thiosulfate solution Ingestion-build-81111 Acceptance tests1 Scope This International Standard establishes criteria for the purity of photographic grade ammonium thiosulfate solution and specifies the tests to be used to determine the purity.