DREF03 Reference electrode Back Catalog number: 18901184 Manufacturer: DLAB Availability: In the manufacturer's stock Price (VAT incl.) 50,14 € 41,44 € - + Recommended 18901173 D201FLAT Combination pH probe-flat sensor 32,91 € 18901204 PH1.68 500mL 1.68pH, one bottle 34,94 € 18901195 PH7.00 250mL 7.00pH, one bottle 13,00 €