GB/T 11213.7-2008
Test methods of sodium hydroxide for chemical fiber use.Part7:Determination of copper content.Spectrometric method (English Version)

Standard No.

GB/T 11213.7-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 11213.7-2008

Replace

GB/T 11213.7-1989

Scope

This part of GB/T 11213 specifies the method for the determination of copper content in sodium hydroxide for chemical fibers. This section applies to products with a copper content of 0.00001% to 0.0001% in sodium hydroxide.

GB/T 11213.7-2008 Referenced Document

• GB/T 603 Preparation of preparations and products used in chemical reagent test methods*， 2023-08-06 Update
• GB/T 6682 Water for analytical laboratory use.Specification and test methods

GB/T 11213.7-2008 history

• 2008 GB/T 11213.7-2008 Test methods of sodium hydroxide for chemical fiber use.Part7:Determination of copper content.Spectrometric method
• 1989 GB/T 11213.7-1989 Sodium hydroxide for chemical fiber use--Determination of copper mass fraction--Spectrometric method

GB/T 11213.7-2008 -All Parts