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Database: 189759 (26 Oct 2025)
GB/T 12690.23-1990 English PDF
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GB/T 12690.23-1990
: Rare-earth metals and their oxides--Determination of acid soluble silicon oxide--Molybdenum blue spectrophotometric method
Status: Obsolete
Standard ID
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Standard Title (Description)
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GB/T 12690.23-1990
English
199
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Rare-earth metals and their oxides--Determination of acid soluble silicon oxide--Molybdenum blue spectrophotometric method
Obsolete
GB/T 12690.23-1990
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Basic data
Standard ID
GB/T 12690.23-1990 (GB/T12690.23-1990)
Description (Translated English)
Rare-earth metals and their oxides--Determination of acid soluble silicon oxide--Molybdenum blue spectrophotometric method
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
H14
Word Count Estimation
3,385
Date of Issue
12/30/1990
Date of Implementation
1/1/1992
Older Standard (superseded by this standard)
YB 1509-1977
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