Petroleum Marker Standard Back Catalog number: 95589 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 4M187 2,2',3,4',5,5',6-Heptachloro-4-methoxybiphenyl, 1.2ml x 50ug/ml, nonane Price on request 70337 1,2-Propanediol, 1000µg/ml in MeOH, 1ml Price on request 58245 Rhodium (Rh) Price on request