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 MI59P EC/TDS/Temp probe for EC59 and EC60 Price on request LCL-30-3 2M Lithium Chloride Electrolyte, 3 x 30ml Price on request MA921B/1 Double junction orp platinum electrode MA921B/1 Price on request