beta-HCH, 100 µg/ml, Acetonitrile, 5ml Back Catalog number: 678423 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended C16170500 Phthalic acid, bis-2-n-butoxyethyl ester, certified, 0.1g Price on request 64688 Chlorpyrifos, 100µg/mL in MeOH, 1ml Price on request 94609 VOC Standard Price on request