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NCSZ-As-2.0μg/L 标样/水质砷As质控样2.0μg/L
NCSZ-Mn-2.5μg/mL 标样/锰水质标样2.5μg/mL
NCSZ-NA-0.25mg/L 标样/水质Na钠质控样
NCSZ-Fe-50.0μg/mL 标样/水质Fe铁质控样50.0μg/mL
NCSZ-CR(VI)-0.02μg/mL 标样/水质CR(VI)六价铬质控样0.02μg/mL
NCSZ-CR(VI)-0.18μg/mL 标样/水质CR(VI)六价铬质控样0.18μg/mL
NCSZ-P-2.05μg/mL 标样/水质P磷酸盐(以磷计)质控样2.05μg/mL
GBW(E)082660 标准物质/水中氨氮
GNM-M27195-2013 27种混标溶液-铝砷硼钡铍铋钙镉钴铬铜铁钾锂镁锰钼钠镍铅锑硒锶钛铊钒锌Al,As,B,Ba,Be,Bi,Ca,Cd,Co,Cr,Cu,Fe,K,Li,Mg,Mn,Mo,Na,Ni,Pb,Sb,Se,Sr,Ti,Tl,V,Zn
GBW09201 尿素纯度标准物质