beta-HCH, 100 µg/ml, Methanol, 1ml Back Catalog number: 680443 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 82458 USP Organic Volatile Impurities Mix (Low Conc.) Price on request M324685 1-Methyl-4-nitro-5-thioimidazole, 1g Price on request 54236 Total Phenolics Price on request