EPA Method 507 - Performance Check Solution Back Catalog number: 19030 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended L18000062CY Pesticide-Mix 62, 10µg/ml in Cyclohexane, 10ml Price on request 8242.18-100-IO 1-Nitrotriphenylene-d11, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 677815 2-Furaldehyde (DNPH derivative), 100mg Price on request