Sulfamerazine, 100 µg/ml, Methanol, 1ml Back Catalog number: 679812 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 95227 EPA Method 525 Internals & Surrogates Price on request 674020 Fenuron, 10 µg/ml, Acetonitrile, 10ml Price on request 676679 o-Dianisidine, 100mg Price on request