Obsolete

SJ 3228.7-1989Determination of Chromium in high purity arenaceous quartz (English PDF)

高纯石英砂中铬的测定

SJ 3228.7 | Evolution and historical versions

Std ID	Title	Status
SJ/T 3328.7-2016	Determination of high purity quartz sand Part 7 chrome electronic products	Valid
SJ 3228.7-1989	Determination of Chromium in high purity arenaceous quartz	Obsolete

SJ 3228.7-1989 is obsolete. It has been replaced by SJ/T 3328.7-2016. This page sells the obsolete edition, for projects and contracts that still cite it.

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Issued by

MOEI

Level / Type

National · Mandatory

Issue date

March 20, 1989

Implementation date

March 25, 1989

Scope

SJ 3228.7-1989 is the English-translated version of 高纯石英砂中铬的测定.

SJ 3228.7-1989 is the Chinese industry standard "Determination of Chromium in high purity arenaceous quartz". It was issued on March 20, 1989 by MOEI, and took effect on March 25, 1989. It is obsolete: it has been replaced by SJ/T 3328.7-2016.

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Document preview — SJ 3228.7-1989

National Standard of the People's Republic of China

Issued by: MOEI

Document data

1 Document data

Sector: Electronics (industry standard).

Issuing body: MOEI.

Date of issue: 1989-03-20.

Date of implementation: 1989-03-25.

Status: obsolete, replaced by SJ/T 3328.7-2016.

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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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