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 MA812/2 Conductivity/TDS probe with 2meter cable(MC 310). Price on request 52002547 pH Sensor InPro3250/120/PT100 Price on request MA911B/2 Double junction pH electrode MA911B/2 Price on request