Wholesale ultrasonic conductive FDA CE medical ecg gel ultrasound gel GRAND Ultrasound Gel and ECG Gel is water-based, hypoallergenic and can be applied to all types of diagnostic and therapeutic medical ultrasound scans. It is composed of carbomer, sodium hydroxide, glycerin, medical disinfectants and purified water. Our gel is acoustically efficient to transmit the range of ultrasound frequencies being used, so it is widely used as coupling agent to reduce static for Doppler scanning, especially for fetal development images.