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GOST 14047.7-78
Lead concentrates. Determination of cobalt. Photometric method
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€10
GOST 25337-82
Petroleum paraffins. Method for the determination of colour on colorimeter KNS-2
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€10
GOST 28794-90
Reagents. Method for the determination of specific surface of chromatographic materials by thermal desorption
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€10