China National Standards

China Hazen GB Standards List

  •  China "Hazen" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 3143-1982 Colour determination method of liquid chemicals (Hazen unit--platinum-cobalt scale)
    液体化学产品颜色测定法 (Hazen单位--铂-钴色号)    		 China National Standards
    Hazen
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