The Parker Aquasonic 100 Ultrasound Transmission Gel is ideal for those looking to achieve the best results from their ultrasound scanning device. The specially formulated, bacteriostatic gel is free from harmful substances such as; formaldehyde and spermicide, making it non-sensitive and non-irritating even on sensitive skin. The gel is also formulated in such way that it does not cause any staining or damage transducers. Many manufacturers of ultrasound related devices recommend using the Aquasonic ultrasound gel for optimal results. Each bottle contains 250mL of Parker Aquasonic gel.