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山药农残空白质控样
MTO BENZO(A)PYRENE D12, 0.2G 标准品
4种定制混标 BePure-33783YM
42种农残混标 BePure-33181XM
Dimethylacrylshikonin 标准品
苯丙胺溶液, 100ppm
5'-肌苷 酸二钠
2.2'.3.3'.4.5'.6.6'-Octachlorobiphenyl Solution 100ug/ml in Hexane (无证书)
S-Methyl thioacetate
2-Amino-5-nitropyridine (无证书)