1/4" ID Peristaltic Pump Santoprene Tubing (TPE55S Back Catalog number: PC-5000-1177 Availability: In the manufacturer's stock Price on request - + Recommended MA915B/2 pH glass electrode for with 2meter cable. Price on request 51343101 pH electrode InLab Expert Pro Price on request MA916B/1 Combined glass pH electrode, refill, BNC, 1m Price on request