ISO/TC 93
| Project No. | ISO 3946:1982 |
|---|---|
| Title | <p>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).</p> |
| Registration number (WIID) | 9594 |
| Scope | <p>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).</p> |
| Status | Standarts spēkā |
| ICS group | 67.180.20 |