国家标准物质-标准物质实验室【北京华研】
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BYZ6847-2016B 水质总磷、总氮(标样)水质总磷、总氮(标样) Water quality Total phosphorus, total nitrogen (standard sample) 20mL
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BYZ6847-2016A 水质总磷、总氮(标样)水质总磷、总氮(标样) Water quality Total phosphorus, total nitrogen (standard sample) 20mL
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BYZ6847-2016 水中总磷、总氮(标样)水中总磷、总氮(标样) Total phosphorus and nitrogen in water (standard sample) 20mL
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BYZ6846-2016 硫酸盐(硫酸根)溶液标准物质硫酸盐(硫酸根)溶液标准物质 Sulfate (sulfate) solution reference material 50mL
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BYZ6844-2016 硫化氢标准溶液硫化氢标准溶液 Hydrogen sulfide standard solution 20mL
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BYZ6841-2016 亚硝酸盐标准溶液亚硝酸盐标准溶液 Standard solution of nitrite 50mL
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BYZ6840-2016 硫化氢标准溶液硫化氢标准溶液 Hydrogen sulfide standard solution 20mL
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BYZ6838-2016D 水质二氧化硫(甲醛法)(水剂)(标样)水质二氧化硫(甲醛法)(水剂)(标样) Water quality sulfur dioxide (formaldehyde method)(water agent)(standard sample) 20mL
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BYZ6838-2016C 水质二氧化硫(甲醛法)(水剂)(标样)水质二氧化硫(甲醛法)(水剂)(标样) Water quality sulfur dioxide (formaldehyde method)(water agent)(standard sample) 20mL
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BYZ6838-2016B 水质二氧化硫(甲醛法)(水剂)(标样)水质二氧化硫(甲醛法)(水剂)(标样) Water quality sulfur dioxide (formaldehyde method)(water agent)(standard sample) 20mL
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