Braun Lens Filters For Thermometers. The Braun Ear Thermometer ThermoScan Lens Filter is designed to effectively eliminate the risk of transferring germs through cross-contamination, ensuring maximum safety with every use.. These highly accurate filters efficiently protect the lens of your thermometer from unwanted scratches and impurities that might affect the reading. It's made suitable for all Braun ThermoScan ear thermometers.. This filter is designed to prevent dirt or ear wax build-up to maintain accurate temperature readings. Lens filters must be replaced after every reading to guarantee hygienic and accurate results. Each filter is CE marked, BPA free, and Latex free for improved safety.. Includes:. 40 x Thermometer Lens Filter