VPH Primary Calibration Spike Rev 1.1 Back Catalog number: 51166 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended L13120000IO Endosulfan (alpha + beta), 10µg/mL in IO, 10ml Price on request 79571 2-(2-Butoxyethoxy)ethanol Price on request 672929 Hexazinone, 100mg Price on request