DREF02 Reference electrode Back Catalog number: 18901183 Manufacturer: DLAB Availability: In the manufacturer's stock Price (VAT incl.) 49,13 € 40,60 € - + Recommended 18901219 222mV ORP 250mL, 222mV, ORP standard solution, one 31,04 € 18901157 D201G Refillable combination pH probe 23,88 € 18901204 PH1.68 500mL 1.68pH, one bottle 34,23 €