DREF01 Reference electrode Back Catalog number: 18901182 Manufacturer: DLAB Availability: In the manufacturer's stock Price (VAT incl.) 24,58 € 20,31 € - + Recommended 18901157 D201G Refillable combination pH probe 24,38 € 18901187 DDJS-0.01V ultra-low conductivity probe 120,66 € 18901149 DDO01-2M-H Polarographic DO probe 121,47 €