EPA Method 507 - Internal Standard Back Catalog number: 19031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 97912 MPP+ Price on request 676592 D7-Propamocarb, 100 µg/ml, Acetonitrile, 1ml Price on request LA11457534CY Chloroparaffin C12 55.00% Cl, 10μg/mL in CY, 1ml Price on request