NBN T 04-170-1983 6875 Glycerine for industrial use -Determination of glycerl content - Ti-trimetric method《工业用丙三醇，丙三醇含量的测定 滴定法》.pdf

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NBN T 04-161-1983 8750 Glycerines for industrial use- Samples and test methods - General《工业用丙三醇 取样和试验方法 概述》.pdf

NBN T 04-162-1983 0625 Glycerines for industrial use- Determination of alkalinity or acidity-Titrimetric méthod《工业用丙三醇 碱度或酸度的测定 滴定法》.pdf

NBN T 04-164-1983 9375 Glycerines for industrial use-Methods of sampling《工业用丙三醇 取样方法》.pdf

NBN T 04-166-1983 0625 Glycerines for industrial use-Determination of Ash -Gravimetric method《工业用丙三醇 灰分测定 重力测定法》.pdf

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