Polymer Testing Instruments Inc. was established in 1996 to provide a high quality alternative for service and calibration of equipment for the Rubber, Energy and Plastics industry. PTI performs ISO/ 17025 Accredited (A2LA Certificate #1504.01 ) Calibrations and Repairs both at your facility and in our Laboratory. With over 30 years’ experience, our Engineers and Technicians pride themselves in supplying the reliable services and products you demand. We stock a large inventory of many of the parts used in Rheometers, Viscometers, Tensile Testers and Durometers to keep you in production.