水中磷酸盐-磷成分分析标准物质  Standard material for analysis of phosphate-phosphorus composition in water  20mL  

氟化物、氯化物、硝酸盐、硫酸盐(4种阴离子)  Fluoride, chloride, nitrate, sulfate (4 anions)  100mL  

硝酸钾溶液标准物质  Potassium nitrate solution reference material  50mL  

六偏磷酸钠标准溶液  Standard solution of sodium hexametaphosphate  100mL  

模拟游离余氯标准物质  Simulated free residual chlorine reference material  20mL  

总余氯标准物质  Total residual chlorine reference material  20mL  

5种阴离子混标(氟、氯、碘离子、硝酸根、硫酸根)  5 anions mixed (fluorine, chlorine, iodide, nitrate, sulfate)  50mL  

水中甲酸、乙酸、草酸溶液标准物质  Water formic acid, acetic acid, oxalic acid solution standard material  2mL  

水中甲酸、乙酸、草酸溶液标准物质  Water formic acid, acetic acid, oxalic acid solution standard material  2mL  

硫酸雾标准溶液  Sulfuric acid mist standard solution  50mL