Reference number
ISO 7760:2001
ISO 7760:2001
© ISO 2024
International Standard
ISO 7760:2001
Photography — Processing waste — Determination of hydroquinone
Edition 2
2001-12
2001-12
ISO 7760:2001
32495
Published
(Edition 2, 2001)
This publication was last reviewed and confirmed in 2021.
Therefore this version remains current.
Abstract
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
4 000 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.
Life cycle
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Previously
WithdrawnISO 7760:1986
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Now