DREF03 Reference electrode Back Catalog number: 18901184 Manufacturer: DLAB Availability: In the manufacturer's stock Price (VAT incl.) 49,24 € 40,69 € - + Recommended 18901152 DODO01-10M Optical DO probe 751,10 € 18901160 DDO01-2M Polarographic type DO probe 119,27 € 18901193 PH6.86 250mL 6.86pH, one bottle 12,76 €