NEN-EN-ISO 3946
Starches and derived products - Determination of total phosphorus content - Spectrophotometric method
active, Most Current
| Organization: | NEN |
| Publication Date: | 1 October 1994 |
| Status: | active |
| Page Count: | 12 |
| ICS Code (Starch and derived products): | 67.180.20 |
scope:
Destruction of the organic substances by digestion with a sulpho-nitric mixture and conversion of phosphates to orthophosphates. Formation of a phosphomolybdate. Measurement of the intensity of the blue colour at a wavelength of 825 nm. The method applies to contents up to 5 % (m/m).
Document History
NEN-EN-ISO 3946
October 1, 1994
Starches and derived products - Determination of total phosphorus content - Spectrophotometric method
Destruction of the organic substances by digestion with a sulpho-nitric mixture and conversion of phosphates to orthophosphates. Formation of a phosphomolybdate. Measurement of the intensity of the...