The Vileda Professional Roll-O-Matic® sponge mop refills are manufactured in the USA. the new Advanced Technology foam is manufactured specifically for the controlled environment industry allowing 25% more liquid absorption and two times more liquid release than competing foams. Each refill is completely autoclaveable, resistant to gamma and ETO sterilization as well as being individually packaged and lot number controlled. All Vileda Professional brand refills are ideal for use with the Pull and Lift technique most commonly used in controlled environments. All 10 Roll-O-Matic® sponge refills fit every 10 Roll-O-Matic® handle; all 14 Roll-O-Matic® sponge refills fit every 14 Roll-O-Matic® handle. Certificate of conformance and technical data available upon request.