Homepage>ISO Standards>ISO 2750:1974-Urea for industrial use-Measurement of colour in Hazen units (platinum-cobalt scale) of a urea-formaldehyde solution-Buythis standard
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download between 0-24 hoursReleased: 1974
ISO 2750:1974
Urea for industrial use
CURRENCY
Standard´s number:
ISO 2750:1974
Pages:
2
Edition:
1
Released:
1974
Language:
English
DESCRIPTION
ISO 2750:1974
Lays down the principle of the visual comparison of the colour of a solution of the sample in formaldehyde, stabilized at a pH of 10 0.1, with that of colour standards. Expression of the results in terms of Hazen units. For routine control purposes, referring to ISO 2211. The method has also been approved by the IUPAC.
