Aquasonic is already the most widely used gel for diagnostic and therapeutic medical ultrasound. Continuing that excellence, they now introduce Aquasonic Clear Ultrasound Gel, the next generation of Ultrasound Gel. The difference between the Clear and Aquasonic's 100 gel, which is the world standard? Not much. It's the same formula minus fragrance and color. Recommended for all procedures where a viscous gel is required, the Clear is suitable for all diagnostic and therapeutic medical ultrasound procedures. Acoustically correct for the broad range of frequencies used, the gel is completely aqueous and will not stain clothing or damage transducers. This is a Box of 100 (one hundred) 20g packets of Aquasonic Clear Ultrasound Gel. Aquasonic Clear is made from the purest water with absolutely no perfumes or dyes. The gel is safe for all being hypoallergenic, bacteriostatic and non-irritating. The experts trust Aquasonic which is why it's used and recommended by leading manufacturers of medical ultrasound equipment worldwide. Gel should be applied to the surface of the transducer, not directly on the patient. Please note, Aquasonic Clear is non-sterile, contains no formaldehyde and it is not a spermicide.