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ISO 7059:1982

Caprolactam for industrial use -- Determination of absorbance at a wavelength of 290 nm

General information

Withdrawn from 17.07.2023
Directives or regulations
None

Standard history

Status
Date
Type
Name
17.07.2023
Main
01.12.1982
Main
The spectrometric measurement of the absorbance of a 50 % caprolactam water solution is carried out at a wavelength of 290 nm. The absorbance, expressed in relation to an optical path length of 1 m, is given by a specified formula in which AO is the correction for the difference in absorbances of the cells; A1 is the absorbance of the test solution, and 1 is the optical path length, in centimetres, of the cell.

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