Internal Standard Stock Solution, 1.2ml, nonane Back Catalog number: EPA-1668IS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 1857.10-K-IO 5-Methylindan, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 874-35-1 Price on request S-4051-50K-10HW Sulfur Calibration Mixtures: Di-n-butyl sulfide in Heavy White Oil (less than 20mg/kg S) Unit : 10mL screw-capped bottle Light White Mineral Oil Heavy White Mineral Oil (20 cSt at 40°C) (70 cSt at 40°C) Price on request 0032.22-10UG (5)Helicene, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 188-52-3 Price on request