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GB/T 642-1999 English PDF

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GB/T 642-1999: Chemical reagent. Potassium dichromate

GB/T 642: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 642-1999English179 Add to Cart 2 days [Need to translate] Chemical reagent. Potassium dichromate   GB/T 642-1999
GB/T 642-1986EnglishRFQ ASK 3 days [Need to translate] Chemical reagents--Potassium dichromate Obsolete GB/T 642-1986

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Basic data

Standard ID GB/T 642-1999 (GB/T642-1999)
Description (Translated English) Chemical reagent. Potassium dichromate
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G62
Classification of International Standard 71.040.30
Word Count Estimation 5,592
Date of Issue 9/16/1999
Date of Implementation 6/1/2000
Older Standard (superseded by this standard) GB/T 642-1986
Adopted Standard ISO 6353-2-1983, NEQ
Issuing agency(ies) State Quality and Technical Supervision
Summary This standard specifies the technical requirements of potassium dichromate chemical reagents, test methods, inspection rules, and packaging and logo.

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Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 642-1999 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

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