EPA Method 8141/1657 Surrogate Standard Back Catalog number: 92357 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70311 1-Chloronaphthalene, 1000µg/ml in MeOH, 1ml Price on request 679308 Dimethyldioctadecylammonium chloride, 25mg Price on request 680834 Fenpropidin, 100mg Price on request