Photography. Processing chemicals. Specifications for p-methylaminophenol sulfate has-corrigendum What is BS EN 1740
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Photography. Processing chemicals. Specifications for p-methylaminophenol sulfate has-corrigendum What is BS EN 17401 Scope This International Standard establishes criteria for the purity of photographic grade p methylaminophenol sulfate and specifies the test methods to be used to determine the purity.
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