ObsoleteGo to latest versionHG/T 2257-2011

HG/T 2257-1991Photographic chemicals. Determination of the volatile fraction of the coupler (English PDF)

照相化学品成色剂挥发性的测定

HG/T 2257 | Evolution and historical versions

Std ID	Title	Status
HG/T 2257-2011	Photographic chemicals - Determination of volatile matter in color couples	Valid
HG/T 2257-1991	Photographic chemicals. Determination of the volatile fraction of the coupler	Obsolete

HG/T 2257-1991 is obsolete. It has been replaced by HG/T 2257-2011. This page sells the obsolete edition, for projects and contracts that still cite it.

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Level / Type

Industry · Recommended

Issue date

August 19, 1991

Implementation date

January 1, 1992

Scope

HG/T 2257-1991 is the English-translated version of 照相化学品成色剂挥发性的测定.

HG/T 2257-1991 is the Chinese industry standard "Photographic chemicals. Determination of the volatile fraction of the coupler". It was issued on August 19, 1991, and took effect on January 1, 1992. It is obsolete: it has been replaced by HG/T 2257-2011.

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Document preview — HG/T 2257-1991

Document data

1 Document data

Sector: Chemical Industry (industry standard).

Date of issue: 1991-08-19.

Date of implementation: 1992-01-01.

Status: obsolete, replaced by HG/T 2257-2011.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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