Methylparaben, 100 µg/ml, Acetonitrile, 5ml Back Catalog number: 681247 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 681953 Paraoxon-ethyl, 10.0 µg/ml, Acetone, 10ml Price on request 79218 Catechol Price on request 52119 EPA Method 300.0 Anions Method B Price on request