Photography. Processing waste. Determination of hydroquinone Ingestion-build-223009 Advanced Message Queuing Protocol (AMQP)

Advanced Message Queuing Protocol (AMQP) v1

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Photography. Processing waste. Determination of hydroquinone Ingestion-build-223009 Advanced Message Queuing Protocol (AMQP)1 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.