ISO 5373:1981

Withdrawn

Condensed phosphates for industrial use (including foodstuffs) — Determination of calcium content — Flame atomic absorption spectrometric method

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

01-02-2024

Language(s)

English, French

Published date

01-11-1981

Publisher

International Organization for Standardization

Applicable to products having Ca contents equal to or more than 50 mg/kg. The presence of soluble SiO2 up to 5 g/ml in the test solution does not interfere. Hydrolysis by boiling a test portion in hydrochloric acid medium. Addition of sodium ions, until a constant concentration is obtained, to stabilize the promotion and emission of Ca; addition of lanthanum chloride to increase the sensitivity of the method. Aspiration of the solution into a dinitrogen monoxide-acetylene flame. Spectrometric measurement of the absorption of the 422.7-nm line emitted by a hollow-cathode calcium lamp. Has also been approved by the IUPAC.

Committee	ISO/TC 47
DevelopmentNote	Also numbered as BS 4427-13(1982) (08/2005)
DocumentType	Standard
Pages	4
PublisherName	International Organization for Standardization
Status	Withdrawn

Standards	Relationship
UNE 55752:1984	Identical
NBN EN 1208 : 2005	Identical
NBN T 03 314 : 1984	Identical

EN 1208:2005	Chemicals used for treatment of water intended for human consumption - Sodium calcium polyphosphate
EN 1204:2005	Chemicals used for treatment of water intended for human consumption - Calcium tetrahydrogen bis(orthophosphate)
03/313977 DC : DRAFT NOV 2003	EN 1204 - CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - MONOCALCIUM PHOSPHATE
DIN EN 1208:2005-06	CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - SODIUM CALCIUM POLYPHOSPHATE
I.S. EN 1204:2005	CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - CALCIUM TETRAHYDROGEN BIS(ORTHOPHOSPHATE)
I.S. EN 1208:2005	CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - SODIUM CALCIUM POLYPHOSPHATE
03/313982 DC : DRAFT NOV 2003	EN 1208 - CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - SODIUM CALCIUM POLYPHOSPHATE
DIN EN 1204:2005-06	CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - CALCIUM TETRAHYDROGEN BIS(ORTHOPHOSPHATE)
BS EN 1208:2005	Chemicals used for treatment of water intended for human consumption. Sodium calcium polyphosphate
BS EN 1204:2005	Chemicals used for treatment of water intended for human consumption. Calcium tetrahydrogen bis(orthophosphate)