GEL, ULTRASOUND SONICPAC W/DSPNSR CLR 5L (1/BX) No fragrance or color For diagnostic and therapeutic medical ultrasound procedures Acoustically correct for the broad range of frequencies used Hypoallergenic, bacteriostatic, non-irritating Water Soluble No formaldehyde Not a spermicide 5 liter SONICPAC® with refillable dispenser, 1 per box, 4 per case