Photography. Processing waste. Determination of hydroquinone Ingestion-build-239834 wall bushing or a bushing

wall bushing or a bushing applied to a converter valve

This technical report is intended to be used for the harmonization of existing or future specifications issued by protective devices manufacturers

What is BS 3630-16 – Zinc and zinc alloys about

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Photography. Processing waste. Determination of hydroquinone Ingestion-build-239834 wall bushing or a bushing1 Scope This International Standard specifies a spectrophotometric method for the determination of hydroquinone in photographic processing waste. This method can be applied to samples containing hydroquinone in the concentration range of 200 g l to 4 000 g l; aminophenols and phenylenediamines should also be determined by this method. However, sulfonated hydroquinones or products from the further oxidation of benzoquinone will not be determined.