EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676348 Milbemycin oxime, 100mg Price on request 676738 D10-Chlorpyrifos, 100 µg/ml, Acetone, 1ml Price on request 79276 2-Butoxyethanol Price on request