EPA Method 525 - Internal Standard Back Catalog number: 30031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50276 pH 6.0 Standard @ 25°C Price on request 70776 Oxydemeton methyl, 1000µg/ml in MeOH, 1ml Price on request 3084.11-K-IO 4,6-Dimethylquinoline, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 826-77-7 Price on request