PARKER AQUASONIC 100 ULTRASOUND TRANSMISSION GEL 01-50. The original, the most widely used gel for diagnostic and therapeutic medical ultrasound. Recommended for all obgyn procedures where a viscous gel is required. Acoustically correct for the broad range of frequencies used. Completely aqueous, will not stain clothing or damage transducers. Unique "can't be copied" formula is bacteriostatic, non-sensitizing and non-irritating. Used and recommended by leading manufacturers of medical ultrasound equipment worldwide. 5-Liter Container, Blue. I/EA, 4/CS. Priced per each.