Recommended for diagnostic and therapeutic ultrasound applications when sterility is indicated. Overwrapped, sterilized foil pouches. Acoustically correct for the broad range of frequencies used in medical ultrasound. Non-irritating, hypoallergenic. Completely aqueous, will not stain clothing or damage equipment. Not a spermicide.- Ultrasound Transmission Gel, Sterile, 20g Overwrapped Sterilized Foil Pouches, 48/bx, 6 bx/cs (091011) (Updated packaging ETA: After June 17, 2024) Mfr. Direct