"Dioxin-Like" PCBs Calibration Kit , 7 x 500ul, nonane Back Catalog number: WP-CVS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 50055 Chromium (Cr) Price on request 71799 L(+)Lactic acid Price on request 79318 Endosulfan sulphate Price on request