DREF01 Reference electrode Back Catalog number: 18901182 Manufacturer: DLAB Availability: In the manufacturer's stock Price (VAT incl.) 24,08 € 19,90 € - + Recommended 18901205 PH12.46 500mL 12.46pH, one bottle 34,23 € MA991B/1 Combined glass pH electrode MA991B/1 Price on request 18901200 PH6.86 500mL 6.86pH, one bottle 19,90 €