2,3,4,5-Tetrachloronitrobenzene

2,3,4,5-四氯硝基苯

o-Aminoazotoluene,10 μg/mL in Ethyl acetate

邻氨基氮甲苯

3,3'-Dimethyl-4,4'-diaminodiphenylmethane,10 μg/mL in Ethyl acetate

3,3'-二甲基-4,4'-二胺基二苯基甲烷

p-Aminoazobenzene,1000 μg/mL in AcCN

4-苯基偶氮苯胺

ASTM D5599 精炼汽油空白标准品, RFA Gasoline,Blank

1,1,2-Trichloropropane@ 2000 μg/ml in Methanol

1,1,2-三氯丙烷,2000 μg/mL溶于甲醇(GB 5750.8-2006)

28种地表水挥发性有机物混标,2000ug/ml溶于甲醇, Custom VOC Standard @ 2000 μg/mL in Methanol

Custom Carbonyl-DNPH Standard @ Varied Conc. in Acetonitrile

5种不同浓度甲醇的定制标样, Custom SV Standard 5 @ Varied concentration in Methanol

订制亚硝胺混标, Custom Nitrosamine Standard @Varied conc in Methanol