SFS 3021-1973 《水的pH值测定》.pdf

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STAS 8619 3-1990 Ph-metery Electrometric determination of aqueous solutions ph《pH值测量 溶液pH值的电势测定 》.pdf

TCVN 6492-2011 Water quality Determination of pH《水质 pH值的测定》.pdf

DIN 19266-2015 pH measurement - Reference buffer solutions for the calibration of pH measuring equipment《pH 值测定 pH 值测定设备校正用标准缓冲溶液》.pdf

SR ISO 4045-1995 Leather Determination of pH《皮革 pH值的测定》.pdf

GOST 32089-2013 Leather Method for determination of pH《皮革 pH值的测定方法》.pdf

NY T 82.7-1988 pH值的测定.pdf

GOST 31764-2012 Beer Method for determination of pH《啤酒 pH值的测定方法》.pdf

GB 4689.19-1984 皮革 pH值的测定.pdf

NEN 5750-1989 Soil - Determination of pH in soit samples《土壤 土壤样品的pH值的测定》.pdf

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