"Dioxin-Like" PCBs Calibration Kit , 7 x 500ul, nonane Back Catalog number: WP-CVS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 679817 Sulfamethoxypyridazine, 100 µg/ml, Methanol, 1ml Price on request 71856 Tetranitromethane Price on request 54195 Phosphorus (P) Price on request