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
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