铬酸盐目视检测试剂盒|Chromate Test Kit, colorimetric
13种全氟内标混标/PFAS-C-ES Mixture|PFAS-C-ES Mixture
20种全氟化合物内标混标/欧盟饮用水指令|EU Drinking Water Directive Labelled PFAS Mixture
30种PCB混标/WHO/Europe ISS PCB Mixture|WHO/Europe ISS PCB Mixture 319
7种13C标记的PCB混标(5 µg/mL)|13C labelled PCB Mixture 52 (Marker PCBs w/ PCB 209)