PPD26 Bench-top pH meter Bench-top pH meter with analogue output. Measures pH, redox potential and temperature, mains powered.
PSD21 Bench-top pH meter Bench-top pH meter with analogue output. Measures pH and redox potential, mains powered.
XR43 Mercury sulphate reference electrode Redox reference electrode (silverometry), PVC body, ceramic junction, mercurous sulphate.