California Gas Additive Standard Back Catalog number: 98644 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C16174700 Phthalic acid, bis-4-methyl-2-pentyl ester, 100mg Price on request 3914.16-100-ME Crotaline, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 315-22-0 Price on request 91970 EPA Method 508.1 & 525.2 Pesticide Standard Price on request