Heptenophos Back Catalog number: X9231 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4059-4-10B 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 97380 Semi VOA Extras Price on request 1736.18-2MG 4-Hydroxychrysene, neat, Solvent-neat, Unit 2mg, # of units-1, Cas.no. 63019-40-9 Price on request