0520;5295 标准查询与下载
共找到 8 条与 相关的标准，共 1 页
The method consists in ashing of a test portion in a muffle furnace at 525+25 C, treating the ash obtained with hydrochloric acid, neutralizing with ammonia solution and determing of the value using an ammonia/ammonium chloride electrolyte. Copper, tin, lead and cadmium do not interfere.
Fruits, vegetables and derived products; Determination of zinc content; Part 1 : Polarographic method
- ICS
- 0520;5295
- CCS
- X04;B30
- 发布
- 1986-04
- 实施
Fruits, Vegetables and Derived Products - Determination of Ascorbic Acid Content - Part 2: Routine Methods First Edition; (Withdrawn)
- ICS
- 0520;5295
- CCS
- X04;B30
- 发布
- 1984-11
- 实施
The method consists in extracting the acid from an acidified test portion using diethyl ether, nitrating followed by reduction and Mohler's reaction modified with hydroxylaminehydrochloride, measuring the absorbance of the red complex obtained with a suitable spectrometer. For determining lower concentrations, see ISO 5518.
Fruit and vegetable products; Determination of benzoic acid content (benzoic acid contents greater than 200 mg per litre or per kilogram); Molecular absorption spectrometric method
- ICS
- 0520;5295
- CCS
- X04;B30
- 发布
- 1983-11
- 实施
Fruits, vegetables and derived products; Determination of cadmium content; Flameless atomic absorption spectrometric method
- ICS
- 0520;5295
- CCS
- X04;B30
- 发布
- 1983-11
- 实施
Fruit and vegetable products; Determination of ash insoluble in hydrochloric acid
- ICS
- 0520;5295
- CCS
- X04
- 发布
- 1982-03
- 实施
Fruit and vegetable products; Determination of titratable acidity
- ICS
- 0520;5295
- CCS
- X04
- 发布
- 1981-11
- 实施
Fruit and vegetable products; Determination of water-insoluble solids content
- ICS
- 0520;5295
- CCS
- X04
- 发布
- 1981-10
- 实施
Soya bean products; Determination of cresol red index
- ICS
- 0520;5295
- CCS
- X11
- 发布
- 1979-05
- 实施
