EPA Method 548.1 Internal Standard Back Catalog number: 30078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4051-3-10HW 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 1461.14-10MG 2,9-Dinitroanthracene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 234076-75-6 Price on request 11397.X-10ML Gasoline, Desulfurized,neat,neat,10mL, Price on request