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Standard and/or project Stage TC
ISO 1592:1977
Urea for industrial use — Determination of nitrogen content — Titrimetric method after distillation
95.99 ISO/TC 47
ISO 1593:1977
Urea for industrial use — Determination of alkalinity — Titrimetric method
95.99 ISO/TC 47
ISO 1594:1977
Urea for industrial use — Determination of ash
95.99 ISO/TC 47
ISO/R 1595:1970
Urea for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
95.99 ISO/TC 47
ISO 2749:1973
Urea for industrial use — Measurement of the pH of a solution of urea of conventional concentration (100 g/l) — Potentiometric method
95.99 ISO/TC 47
ISO 2750:1974
Urea for industrial use — Measurement of colour in Hazen units (platinum-cobalt scale) of a urea-formaldehyde solution
95.99 ISO/TC 47
ISO 2751:1973
Urea for industrial use — Determination of the buffer coefficient — Potentiometric method
95.99 ISO/TC 47
ISO 2752:1973
Urea for industrial use — Measurement of the variation of pH in the presence of formaldehyde — Potentiometric method
95.99 ISO/TC 47
ISO 2753:1973
Urea for industrial use — Determination of water content — Karl Fischer method
95.99 ISO/TC 47
ISO 2754:1973
Urea for industrial use — Determination of biuret content — Photometric method
95.99 ISO/TC 47
ISO 4274:1977
Urea for industrial use — Determination of biuret content — Flame atomic absorption and photometric absorption methods
95.99 ISO/TC 47
ISO 7059:1982
Caprolactam for industrial use — Determination of absorbance at a wavelength of 290 nm
90.93 ISO/TC 61/SC 5
ISO 7060:1982
Caprolactam for industrial use — Determination of crystallizing point
95.99 ISO/TC 61/SC 5
ISO 8112:1984
Caprolactam for industrial use — Determination of colour of 50 % aqueous caprolactam solution, expressed in Hazen units (platinum-cobalt scale) — Spectrometric method
90.93 ISO/TC 61/SC 5
ISO 8660:1988
Caprolactam for industrial use — Determination of permanganate index — Spectrometric method
95.99 ISO/TC 61/SC 5
ISO 8660:2002
Plastics — Determination of permanganate absorption number of caprolactam — Spectrometric method
90.93 ISO/TC 61/SC 5
ISO 8661:1988
Caprolactam for industrial use — Determination of volatile bases content — Titrimetric method after distillation
90.93 ISO/TC 61/SC 5

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