ISO-7760 › Photography - Processing waste - Determination of hydroquinone
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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 μg/l to 4000 μg/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.
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37.040.30 (Photographic chemicals)
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Document Number
ISO 7760:2001
Revision Level
2ND EDITION
Status
Current
Publication Date
Dec. 15, 2001
Committee Number
ISO/TC 42