Internal Standard ASTM D-5307 Back Catalog number: 51124 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2991.9-K-CY 2,3-Dimethylheptane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 3074-71-3 Price on request S-4059-1-BX5 Thiophene in Thiophene-free Benzene Units: 5x1mL ampoule, 10mL screw-capped bottle Chiron No. Concentration Light White Mineral Oil µg thiophene/g (20 cSt at 40°C) Price on request 672833 Bispyribac sodium salt, 100mg Price on request