166 W S F 3 4 B T Prescription safety spectacles Certification and marking Marking • frame and lenses are permanently marked • if the markings on the lens and frame are different, the lower mechanical strength applies to the entire eye protection device • according to the PPE regulation, uvex prescription safety spectacles must be marked with the factory symbol and production date: MM/YYYY Marking of the frame in accordance with EN 166 Identification of the manufacturer Increased robustness: Ball bearing drop test, Dropping a ball bearing (44 g) against the frame from a height of 1.30 m No number = general use: Non-specific mechanical risks, risks due to UV and/or visible IR radiation Optional requirements in accordance with EN 166 (extract): tested in extreme temperatures (–5°C, +55°C), this labelling is always in combination with mechanical strength (for example, FT) Additional requirements in accordance with EN 166 (extract): Resistance to liquids (droplets, spray) Additional requirements in accordance with EN 166 (extract): Resistance to coarse dust (grain size > 5 μm) Impact-resistant, low energy: Firing a ball bearing (0.88 g) against the frame frame, impact speed 45 m/s (^=162 km/h) Impact-resistant, medium energy: Firing a ball bearing (0.88 g) against the frame, impact speed 120 m/s (^=432 km/h) Mechanical strength Number of the EN standard Field(s) of use Certification Marking in accordance with EN 166 on the lens and inside of the frame 403
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