总氰化物溶液标准物质  Total cyanide solution reference material  50mL  

水中总磷、总氮混合标准溶液  Water total phosphorus, total nitrogen mixed standard solution  100mL  

水质总有机碳(标样)  Total organic carbon of Water quality (standard sample)  20mL  

水中有机碳溶液标准物质  Organic carbon solution reference material in water  20mL  

总无机碳标准溶液  Total inorganic carbon standard solution  100mL  

总有机碳标准溶液TOC  Total organic carbon standard solution TOC  100mL  

二氧化氮标准溶液  Nitrogen dioxide standard solution  50mL  

氨标准溶液  Ammonia standard solution  20mL  

永久性余氯标准溶液(重铬酸钾-铬酸钾)(四甲基联苯胺比色法)  Permanent residual chlorine standard solution (potassium dichromate - potassium chromate)(tetramethylbenzidine colorimetric method)  100mL  

水中总氯(总余氯)标准溶液(DPD分光光度法)  Total chlorine (total residual chlorine) standard solution in water (DPD spectrophotometry)  20mL