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NA 066

DIN Standards Committee Nonferrous Metals

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Projects of NA 066

Number: 66

ISO 6331 2021-08-12 Chromium ores and concentrates - Determination of chromium content - Titrimetric method More  Comment 
ISO/DIS 11456 2021-07-05 Copper and zinc sulfide concentrates － Determination of silver content － Acid digestion and flame atomic absorption spectrometric or inductively coupled plasma optical emission spectrometric method More  Comment 
ISO/DIS 13548 2020-07-30 Copper, lead and zinc sulfide concentrates - Determination of fluorine content by sodium hydroxide fusion and fluoride ion selective electrode detection More  Comment 
ISO/PWI 20212-2 2020-04-30 Copper, lead, zinc and nickel - Sampling procedures - Part 2: Intermediates and Residues More  Comment 
ISO/PWI 20212-1 2020-01-08 Copper, lead, zinc and nickel - Sampling Procedures - Part 1: Ores More  Comment 
ISO/PWI 20212-3 2020-01-08 Copper, lead, zinc and nickel - Sampling procedures - Part 3: Smelter Products More  Comment 

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