1-Naphthol-4-sulfonic acid, 10mg Back Catalog number: 677421 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 677100 Imidacloprid urea, 10.0 µg/ml, Acetonitrile, 10m Price on request 30078 EPA Method 548.1 Internal Standard Price on request 15900-5039-100AN5 2-(Trifluormethyl)-benzamide, 100µg/ml in AL, 5ml Price on request