Reference number
ISO 1897-7:1977
ISO 1897-7:1977
© ISO 2024
ISO 1897-7:1977
Phenol, o-cresol, m-cresol, p-cresol, cresylic acid and xylenols for industrial use — Methods of test — Part 7: Measurement of colour (Cresylic acid and xylenols only)
Edition 1
1977-04
1977-04
Retirada
Resumen
Specifies a method for the comparison of the colour of a test portion against the colour of colorimetric standard colour matching solutions. The colour of cresols present in the test portion is liable to darken on keeping and on exposure to ligth. ISO 1897/7 replaces ISO Recommendation R 1909-1971.
Ciclo de vida
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Anteriormente
RetiradaISO/R 1909:1971
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Ahora