甲醇中4种工业清洗剂混标(符合HJ 1196-2021), Custom VOC Standard @ 100 μg/mL in PT Methanol

Tolpyralate,100 μg/mL in Acetonitrile

挥发性有机物2种替代物(甲苯-D8、对溴氟苯), Custom VOC Standard @ 2000 μg/mL in Acetonitrile

4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone , 1000 μg/mL in MeOH

14种醛酮-DNPH衍生物混标,不同浓度溶于乙腈, Custom DNPH Standard@ Varied conc. In Acetonitrile