EPA Method 525 Spike C Back Catalog number: 92314 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679910 Matrine, 100mg Price on request 51056 ASTM D-5441MTBE Contaminant Low Conc Price on request 2774.12-100-DC Aldrin, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 309-00-2 Price on request