2,3,6,7-Tetrachloronaphthalene, 1.2ml x 50ug/ml, nonane Back Catalog number: PN-48S Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended L-PFHPS Sodium perfluoro-1-heptanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 0662.29-100-IO alphaßß (20R,24R)-24-Ethylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 71117-92-5 Price on request S-4520-K-IOX5 Organotin Standard Mixture 4 - Tin Ethyl Derivatives 5x1mL 1000 µg/mL in isooctan1 (based on total mass) Mono-n-butyltin (triethyl) Di-n-butyltin (diethyl) Tri-n-butyltin (monoethyl) Monophenyltin (triethyl) Diphenyltin (diethyl) Triphenyltin (mono Price on request