HG/T 2256-1991
Determination of ash content of couplers of photographic chemicals (English Version)

Standard No.

HG/T 2256-1991

Language

Chinese, Available in English version

Release Date

1991

Published By

Professional Standard - Chemical Industry

Status

Be replaced 2012-07

Replace By

HG/T 2256-2011

Latest

HG/T 2256-2011

HG/T 2256-1991 history

• 2012 HG/T 2256-2011 Determination of ash content of couplers of photographic chemicals
• 1991 HG/T 2256-1991 Determination of ash content of couplers of photographic chemicals