VPH Primary Calibration Rev 1.1 Back Catalog number: 97386 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59823 Conductance @ 20°C [500 µmho/cm] Price on request 682369 Tolpyralate, 100 µg/ml, Acetonitrile, 1ml Price on request 57129 Copper (Cu) Price on request