Cone Instruments/Marketlab Aquasonic Clear Ultrasound GelCone Instruments Marketlab Aquasonic Clear Ultrasound Gel AQUASONIC Clear is made with the highest quality ingredients, the purest water, and contains no perfumes or dyes. AQUASONIC Clear is hypoallergenic and provides superior quality time after time. Unlike colored gels, Aquasonic Clear is colorless and fragrance free, making it perfect for applications requiring a neutral, non reactive medium, including OB GYN, vascular, and diagnostic imaging