GOST 19296-1973 Petroleum oils Test for soda reaction from petroleum oils Photoelectric colorimeter method《石油 钠试样光电比色计测定法》.pdf

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JJG 179-1990 滤光光电比色计检定规程.pdf

JB T 9367-1999 光电比色计 通用技术条件.pdf

JB T 9367-1999 光电比色计.通用技术条件.pdf

NC 90-13-12-1987 Metrological Assurance Measurements with Photoelectric Colorimeters General Rules《计量保证体系 光电比色计 一般规则》.pdf

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