Acids Calibration Level 1 Back Catalog number: 94838 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70786 Permethrin (mix isomers), 1000μg/ml in MeOH, 1ml Price on request 95623 Semi-Volatile Mix #3 Price on request 673698 Spirodiclofen, 100 µg/ml, Ethyl acetate, 5ml Price on request