EPA Method 525.2 - 526 Internal Standard Back Catalog number: 91297 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3513.10-100-AN Thiabendazole Price on request 10415.4-K-ME Sodium DL-2-hydroxybutyrate-2,3,3-d3 Price on request 59010 Anions Mix 2, varied µg/ml in Water, 100ml Price on request