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砷标准溶液,7440-38-2,analytical standard, 0.500ug/g in 0.2%(v/v)H2SO4,K+2.2mg/L,Na+23mg/L,Cl-37mg/L
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水质锰标样,7439-96-5,1.32mg/L in H2O,analytical standard,for water analysis
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硫 ICP 标准液 traceable to SRM from NIST H2SO4 in H2O 1000 mg/l S CertiPUR®
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钾 ICP 标准液 1,000 mg/l traceable to SRM from NIST KNO₃ in HNO₃ 2-3% 1000 mg/l K CertiPUR®
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钾 ICP 标准液 10,000 mg/l traceable to SRM from NIST KNO₃ in HNO₃ 2-3% 10000 mg/l K CertiPUR®
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汞 ICP/MS 标准液 10 mg/l traceable to SRM from NIST Hg(NO₃)₂ in HNO₃ 10% 1000 mg/l Hg CertiPUR®
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30种农残定制混标
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34种农残定制混标
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11种农残定制混标
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9种农残定制混标
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