S F B T 1 W ! Prescription safety spectacles Certification and marking Certification Individually manufactured uvex prescription safety spectacles are tested and certified by independent testing institutes at regular intervals according to the requirements of EN 166. For further information, please refer to the following pages of the catalogue or contact the uvex experts directly. Marking of lenses in accordance with EN 166 Note: Due to the mandatory marking, it is not possible to purchase frames without lenses. Please do not modify the completed spectacles in a way that reduces their protective function. Identification of the manufacturer Mechanical strength Optical class Certification Increased robustness: Ball bearing drop test, Dropping a ball bearing (44 g) against the lens from a height of 1.30 m Impact-resistant, low energy: Firing a ball bearing (0.88 g) against the lens, impact speed 45 m/s (^=162 km/h) Impact-resistant, medium energy: Firing a ball bearing (0.88 g) against the lens,impact speed 120 m/s (^=432 km/h) Optional requirements in accordance with EN 166 (extract): Tested in extreme temperatures (–5°C, +55°C), this marking is always in combination with mechanical strength (for example, FT) 402
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