BS ISO 422:1994 : Implementation of ISO 422:1994 Photography — Processing chemicals — Specifications for p-methylaminophenol sulfate
Printed version of this standard is available at Library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail.
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.