TPH Internal Standard Back Catalog number: 92636 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended X9056 4,4’-DDT Price on request 1504.30-100-IO 3ß(H),17ß(H),21ß(H)-3-Hydroxyhopane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 71118 2-Chlorobenzotrifluoride Price on request