EcoGel 300 TENS Gel is a sticky, high viscosity conductive gel (110,000–120,000 cps) designed primarily for TENS treatment and other external procedures requiring a thicker medium. EcoGel 300 TENS Gel can also be used in therapeutic ultrasound as it shares the same conductive properties of our less viscous gels. Due to the thickness of EcoGel 300 TENS Gel, it is an ideal medium for prolonged external treatment.