Method 1640 Tuning Standard Back Catalog number: 52147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1993.10-50-IO 1-Chloronaphthalene, 50µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 90-13-1 Price on request C13290000 Ethofumesate, 250mg Price on request C14370700 Ipronidazole, 50mg Price on request