1/4" ID Peristaltic Pump Santoprene Tubing (TPE55S Back Catalog number: PC-5000-1177 Availability: In the manufacturer's stock Price on request - + Recommended MA814DB/1 EC/TDS/Temp probe for Mi170 Price on request 52002547 pH Sensor InPro3250/120/PT100 Price on request MA811/2 Conductivity/TDS probe with 2meter cable (MC410). Price on request