CHEMSOLUTE Universal pH-indicator paper, pH 1-14, 5m x 7mm, Refill pack with 3 rolls Back Catalog number: 2814-3ROLL Availability: In the manufacturer's stock Price on request - + Recommended 18901170 D201-C Combination pH probe 15,52 € 18901215 84μS/cm 500mL Conductivity Solution, one bottle 37,41 € LCL-30-3 2M Lithium Chloride Electrolyte, 3 x 30ml Price on request