17.180.20;71.100.01 标准查询与下载
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Настоящий стандарт устанавливает метод определения цвета формальдегидного раствора мочевины (карбамида) в единицах Хазена (платино-коба
Urea for industrial use. Determination of colority of formaldehyde solution in Hasen's units (platinum - cobalt scale)
- ICS
- 17.180.20;71.100.01
- CCS
- 发布
- 1993
- 实施
- 1994-07-01
Liquid chemical products. Measurement of colour in Hazen units (platinum-cobalt scale)
- ICS
- 17.180.20;71.100.01
- CCS
- 发布
- 1991
- 实施
- 1993-01-01
Covers the two ranges 0 to 50 and 60 to 450 Hazen units. Applicable also to solutions and clear dispersions of, for example, plastics materials.
Method of measurement of colour in Hazen units (platinum-cobalt scale) of liquid chemical products
- ICS
- 17.180.20;71.100.01
- CCS
- G04
- 发布
- 1976-06-30
- 实施
- 1976-06-30
Applicable only to clear, slightly coloured liqids. Such colour characteristics are described as brownish-yellow. The principle is based on a visual comparison of the colour of a sample with that of colour standards. The results are expressed in terms of the platinum-cobalt scale. For routine control purposes a comparator, colorimeter or spectrophotometer may be used, if the values so obtained are identical with those obtained by visual comparison.
Liquid chemical products; Measurement of colour in Hazen units (platinum-cobalt scale)
- ICS
- 17.180.20;71.100.01
- CCS
- A26
- 发布
- 1973-10
- 实施
Chemical analysis of organic products. Visual evaluation of coloration in hazen units.
- ICS
- 17.180.20;71.100.01
- CCS
- G15
- 发布
- 1965-06-01
- 实施
- 1965-06-01
