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ISO 7554-3:2026 Surgical instruments — Terms, measuring methods and test methods — Part 3: Test methods

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ISO 41002:2026 Facility management — Development of the facility management organization

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ISO 39004:2026 Road traffic safety — Good practice for service providers using digital platform

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ISO 7990:1985

ISO 7990:1985 Manganese ores and concentrates – Determination of total iron content – Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method

CDN $85.00

SKU: 69249ac64877 Category:

Description

Method A is applicable to products having a total iron content from 1 to 25 % (m/m), and method B is applicable to products having a total iron content from 0.2 to 2 % (m/m). ISO 7990 should be read in conjunction with ISO 4297. Specifies principle, reactions (method A only), reagents, apparatus, sampling and samples, procedure and expression of results.

Edition

1

Published Date

1985-12-12

Status

PUBLISHED

Pages

6

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

Method A is applicable to products having a total iron content from 1 to 25 % (m/m), and method B is applicable to products having a total iron content from 0.2 to 2 % (m/m). ISO 7990 should be read in conjunction with ISO 4297. Specifies principle, reactions (method A only), reagents, apparatus, sampling and samples, procedure and expression of results.

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