Quantitative Crude Oil Standard ASTM D-5307 Back Catalog number: 51122 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2629.35-50-IO 17ß(H),21 alpha(H)-(22RS)-Pentakishomohopane, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 73152 Nonafluoro-1-butanesulfonate Price on request 70997 2,3,3-Trimethylpentane Price on request