GB/T 6283-1986
Chemical products--Determination of water--Karl Fischer method (general method) (English Version)

Standard No.

GB/T 6283-1986

Language

Chinese, Available in English version

Release Date

1986

Published By

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

Status

Be replaced 2009-02

Replace By

GB/T 6283-2008

Latest

GB/T 6283-2008

Scope

This standard stipulates the determination of free water or crystal water content of most organic and inorganic solid and liquid chemical products by Karl Fischer method. In some cases, samples require pretreatment measures, which are specified in the corresponding national standards. This standard specifies two titration methods that use visual inspection and electric quantity to determine the end point. When there is no coulometric instrument, the visual method can be used, which is a direct titration method, but can only be used for colorless solutions. The coulometric method includes direct titration and back titration, no matter which one is used, it is more accurate, therefore, the coulometric method is recommended.

GB/T 6283-1986 history

• 2008 GB/T 6283-2008 Chemical products.Determination of water Karl.fischer method(general method)
• 1986 GB/T 6283-1986 Chemical products--Determination of water--Karl Fischer method (general method)