Original Blue * 5 Liter(175oz) 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 *