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ISO/TR 42505:2026 Sharing economy — Shared manufacturing — Concepts and models

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TEMA 11th Edition – Book of Standards (Not for Resale)

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ISO 423:1994

ISO 423:1994 Photography – Processing chemicals – Specifications for hydroquinone

CDN $85.00

SKU: 585b0d01c7ee Category:

Description

Establishes criteria for the purity and describes the test methods for identity tests, residue after ignition, heavy metals content, iron content, appearance of solution. Annex A describes preparation of the standard ammonium cerium(IV) hexanitrate solution.

Edition

2

Published Date

1994-04-21

Status

PUBLISHED

Pages

6

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

Establishes criteria for the purity and describes the test methods for identity tests, residue after ignition, heavy metals content, iron content, appearance of solution. Annex A describes preparation of the standard ammonium cerium(IV) hexanitrate solution.

Previous Editions

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