Ibuprofen, 100 µg/ml, Methanol, 1ml Back Catalog number: 681069 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 30057 EPA Method 552 Surrogate Standard Methyl Ester Price on request 91968 Aroclor 1242 Price on request 675294 Parathion-ethyl, 100 µg/ml, Acetonitrile, 5ml Price on request