EPA Method 552 Internal Standard Back Catalog number: 30055 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended N-13562-100MG Thiamethoxam, 100mg Price on request 675559 Dimefuron, 10.0 µg/ml, Acetonitrile, 10ml Price on request NCS DC73344 Synthetic limestone, 70g Price on request