Instrument Standard 4 Back Catalog number: 53080 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70461 2-Nitropropane Price on request 9427.5-100-IO Hexachlorocyclopentadiene, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 77-47-4 Price on request 92314 EPA Method 525 Spike C Price on request