Isoniazid, 50mg Back Catalog number: 672961 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 28013 EPA Method 8260B Purgeable Internal Standard Price on request 8241.18-50-IO 1-Nitrotriphenylene, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 57725 Manganese (Mn) Price on request