ORIGINAL BLUE * 0.25 Liter (8.5oz) each * World Standard for Medical Ultrasound Transmission AQUASONIC 100 is the most widely used gel for diagnostic and therapeutic medical ultrasound * Recommended for all procedures where a viscous gel is required * Acoustically correct for the broad range of frequencies used * Completely aqueous will not stain clothing or damage transducers * Unique can't be copied formula is hypoallergenic bacteriostatic non-sensitizing and non-irritating * No formaldehyde * Not a spermicide * Used and recommended by leading manufacturers of medical ultrasound equipment worldwide *