定制 OP 农药标准品 2 @ 2000μg/ml 甲苯溶液, Custom OP Pesticide Standard 2 @ 2000μg/ml in Toluene

15种硝基苯混标100&1000 ug/mL in Hexane:Toluene (30:70)(硝基苯与邻,间,对硝基甲苯为1000ug/ml), Custom Nitrated Standard @ Varied Conc.in 30% Toluene 70% Hexane