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European Standard For Eye Protection

Basic Standard
EN 166 "Specifications"
EN 167 "Optical test methods"
EN 168 "Test method other than optical"

Standards by applications types
EN 169 "Welding filters"
EN 170 "Ultraviolet filters"
EN 171 "Infrared filters"
EN 172 "Solar protection filters for industrial use"
EN 175 "Welding work equipment"
EN 207 "Glasses for laser protection"
EN 208 "Glasses for laser adjustment"
EN 379 "Specification concerning welding filters"

Frame Marking
Frame marking must include the EC Symbol and the manufacturer's identification (logo or brand). If spectacles refer to the EN Standard, the number of the EN Standard is compulsory with the various application and mechanical strength symbols, in accordance with the tests requested by the manufacturer.

Application symbols:
3 Liquids droplets or splashes
4 Large dust particles > 5 microns
5 Gases and small dust particles < 5microns
8 Short circuit electric arc
9 molten metal and hot solids

Mechanical strength symbols:
S Extra strong, resists a 22 mm 43 g ball falling 1,30m
F Low energy impact, resists a 6 mm 0,86 g ball at 45m/s
B Average energy impact, resists a 6 mm 0,86 g ball at 120m/s
A High-energy impact, resists a 6 mm 0,86 g ball at 190m/s.

MARKING OF LENSES
Marking of lenses must include:

The echelon grating for filtering lenses
The manufacturer's identification (logo or brand)
The optical class
The various mechanical strength symbols, in accordance with the tests requested by the manufacturer
The various application symbols, in accordance with the tests requested by the manufacturer
Symbols for the optical class:
1 Continuous work
2 Intermittent work
3 Occasional work, but must not be worn continuously

Application symbols:
9 Molten metal and hot solids

Mechanical strength symbols:
S Extra strong, resists a 22 mm 43 g ball falling 1,30m
F Low energy impact, resists a 6 mm 0,86 g ball at 45m/s
B Average energy impact, resists a 6 mm 0,86 g ball at 120m/s
A High-energy impact, resists a 6 mm 0,86 g ball at 190m/s.
K Resistance to surface deterioration by small particles (optional)
N Resistance to misting (optional).

WARNING:
F Maximum protection for spectacles with side arms
B Maximum protection for goggles
A Maximum protection for face protections

If the S, F, B and A symbols are not the same for the lens and for the frame, the lower level must be assigned to the complete protective equipment.

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