水质总硬度(标样)  Total hardness of water quality (standard sample)  20mL  

水质总硬度(标样)  Total hardness of water quality (standard sample)  20mL  

水中六价铬成分分析标准物质  Standard material for analysis of hexavalent chromium in water  20mL  

无硝酸盐的水  Nitrate free water  50mL  

人造海水  Artificial sea water  100mL  

甲醇中8种卤代烃混合标样  Mixed standard samples of 8 halogenated hydrocarbons in methanol  2mL  

甲醇中8种卤代烃混合溶液标准物质  Eight kinds of halogenated hydrocarbon standard substances in methanol mixed solution  1.2mL  

甲醇中5种挥发性卤代烃混合标样(II)  Mixed Standard Sample of 5 Volatile Halogenated Hydrocarbons in Methanol (II)  2mL  

甲醇中1,1,2-三氯-1,2,2-三氟乙烷溶液标准物质  1,1, 2-trichloro-1,2, 2-trifluoroethane solution reference material in methanol  1.2mL  

甲醇中1,3-丁二烯溶液标准物质  Reference material for 1, 3-butadiene solution in methanol  1.2mL