Norm

NEN-ISO 419:1977 en

Fotografie - Natriumthiosulfaat, 5-water profoto - Specificatie

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Over deze norm

Status Ingetrokken
Aantal pagina's 4
Gepubliceerd op 01-12-1977
Taal Engels
This International Standard gives a specification for photographic grade crystalline sodium thiosulphate. It is one of a series to establish criteria of purity of chemicals suitable for processing photographic materials. A "photographic grade" chemical is one which meets purity requirements as described. This specification states the limiting concentrations and the test methods for certain inert or photographically harmful impurities that may be present.

Details

ICS-code 37.040.30
Nederlandse titel Fotografie - Natriumthiosulfaat, 5-water profoto - Specificatie
Engelse titel Photography grade sodium thiosulphate, crystalline - Specification

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