pH electrode InLab Expert Pro Back Catalog number: 51343101 Availability: In the manufacturer's stock Price on request - + Recommended MC720 MC720 Controller kit Price on request 18901197 PH1.68 250mL 1.68pH, one bottle 18,71 € 18901207 1408μS/cm 250mL Conductivity Solution, one bottle 19,90 €