EN ISO 3946:1994
Current
The latest, up-to-date edition.
Starches and derived products - Determination of total phosphorus content - Spectrophotometric method (ISO 3946:1982)
25-08-1994
Foreword
1 Scope and field of application
2 Definition
3 Principle
4 Reagents
5 Apparatus
6 Procedure
7 Expression of results
8 Test report
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).
| Committee |
CEN/BT
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| NBN EN ISO 3946 : 1994 | Identical |
| NEN EN ISO 3946 : 1994 | Identical |
| UNI EN ISO 3946 : 1995 | Identical |
| ISO 3946:1982 | Identical |
| I.S. EN ISO 3946:1995 | Identical |
| NS EN ISO 3946 : 1ED 1994 | Identical |
| UNE-EN ISO 3946:1995 | Identical |
| NF EN ISO 319946 : 1994 | Identical |
| PN EN ISO 3946 : 2000 | Identical |
| BS EN ISO 3946:1994 | Identical |
| EN ISO 11214:1996 | Modified starch - Determination of carboxyl group content of oxidized starch (ISO 11214:1996) |
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