Photography. Processing waste. Determination of hydroquinone Ingestion-build-223009 preparation areas of bars

preparation areas of bars

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The criteria for the design of neutron shielding and the choice of shielding materials contained in this International Standard should be applied to the design of neutron radiation protection shielding systems in such facilities

Photography. Processing waste. Determination of hydroquinone Ingestion-build-223009 preparation areas of bars1 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.