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N,N-Dimethylaniline, 1000μg/ml in methanol
1,2-Dihydroxybenzene-1-13C 标准品
5-Methyl-4-nitroso-2-isopropylphenol (无证书)
4-Amino-1-methyl-1H-imidazole-5-carboxamide
Ethylene glycol mono(4-n-nonylphenyl) ether-13C6
17种农残混标 标准品
Low Concentration Phenol Mix 标准品
24种偶氮染料混标 标准品(定制)
Dioxydemeton-S-methyl Solution 100ug/ml in Toluene
2,2-Dimethylpropane-1,1,1-d3 (gas) 标准品