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EN 166 - General standard |
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The present European Standard includes construction specifications and functional and performance requirements (optical and mechanical properties) of the various kinds of individual protectors of the eye, as well as marking requirements. |
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EN 169 - Welding filters |
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The present European Standard specifies the numbers of scale and the requirements of the transmission factor of the filters designed to protect workers involved with welding, braze welding, arc cutting and plasma jet cutting. |
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EN 170 - Ultraviolet filters |
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The present European Standard specifies the numbers of scale and the requirements of the transmission factor of the filters designed to protect against ultraviolet radiations. |
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EN 172 - Solar protection filters for industrial use |
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The present European Standard specifies the graduation numbers, the transmission factors and their related requirements of solar protection filters for industrial use. |
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STANAG 2920 - Ballistic test method for personal armour materials and combat clothing |
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This standard includes a set of guidelines for performing ballistic tests aimed at determining the level of protection provided by personal equipment and combat uniforms. |
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STANAG 4296 - Eye protection for the individual soldier/Ballistic protection |
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This standard is based on STANAG 2920 and on many other military specifications to determine the criteria to be followed for military protective eyewear. Unlike STANAG 2920 which concerns any type of ballistic protection, STANAG 4296 only concerns protective eyewear. |
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REACH |
| In order to safeguard the consumers’ health, the European Union issued the REACH regulation (come into force on 1st June 2007) which forbids the use of certain chemicals. COFRA guarantees that all its safety eyewear comply with the Reach Regulation; they do not contain forbidden or limited substances (Aromatic amines and 4-aminobenzoic acid deriving from azo dyes, heavy metals, phthalates, and so on) and, to guarantee it, all garments and accessories used during production are subjected to controls. |
| EAC TP TC 019/2011 |
| Technical regulation on the safety of Personal Protective Equipment distributed in the territory of the Eurasian Customs Union. |
| UKCA (UK Conformity Assessed) |
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New product conformity marking, used for most of the products placed on the Great Britain market (England, Wales and Scotland) now covered by regulations and directives for EC marking. |
Scale number
| CODE NUMBER | FILTER RATING NUMBER | TYPE OF FILTER | |
|---|---|---|---|
| from | to | ||
| 2 | 1,2 | 5 | Ultraviolet (UV) filters (UV) |
| 2C 3 |
1,2 | 5 | Ultraviolet (UV) filters with good colour recognition |
| 4 | 1,2 | 10 | Infra-red (IR) filters |
| 5 | 1,1 | 4,1 | Sun filter (the solar protection offered by the lens has no infra-red element) |
| 6 | 1,1 | 4,1 | Sun filter (the solar protection offered by the lens has an infra-red element) |
| none | 1,2 | 16 | Filters for welding |
The filter code number is always followed by the filter rating number (both numbers are separated by a space), and together form the scale number.
APPLICATION FIELDS
| SYMBOL | PROTECTION AGAINST | DESCRIPTION OF THE APPLICATION FIELD | TYPE OF EYE PROTECTOR | ||
|---|---|---|---|---|---|
| Glasses | Goggles/Masks | Face masks | |||
| none | Basic | Unspecified mechanical hazards and dangers deriving from ultraviolet, visible, infrared and solar radiations |  |
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| 3* | Liquids | Droplets of liquid | Not applicable | |
Not applicable |
| Splashes of liquid | Not applicable | Not applicable | |
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| 4* | Dust particles of big dimensions | Powder with particles > 5 μm | Not applicable | |
Not applicable |
| 5* | Gas and particles of fine dust | Gases, vapors, sprays, fume and dust with particles < 5 μm | Not applicable | |
Not applicable |
| 8** | Short circuit electric arc | Electric arc due to short-circuit in the electrical system | Not applicable |
Not applicable | |
| 9*** | Molten metals and hot solids | Liquid metal splashes and penetration of hot solids | Not applicable | |
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* The symbol (s) 3, 4 and 5 must be indicated on the frame. If the frame of the eye protector is not marked with any of these symbols, then the eye protector is not intended to be suitable for protection against chemical risks.
** The symbol 8 must be indicated on the lens and on the frame to guarantee protection against electrical risks. To conform to symbol 8, a face shield must be equipped with a filter with a scale number of 2-1,2 or 3-1,2 and have a minimum thickness of 1,4 mm.
*** The symbol 9 must be indicated on the lens and on the frame to guarantee protection against thermal risks. To conform to symbol 9, both the frame and the eyepiece must be marked with this symbol together with one of the following symbols: F, B or A.
OPTICAL CLASS (All COFRA lenses are optical class 1)
| SYMBOL | DESIGNATION |
|---|---|
| 1 | On-going work |
| 2 | Intermittent work |
| 3 | Occasional work (not intended for prolonged use) |
MECHANICAL RESISTANCE
| SYMBOL | IMPACT | TYPE OF EYE PROTECTOR | |||
|---|---|---|---|---|---|
| Impact level | Impact speed | Glasses | Goggles/Masks | Face masks | |
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A* AT** |
High energy impact | 190 m/s (684 km/h) Steel ball with a diameter of 6 mm and a mass of 0,86 g |
Not applicable | Not applicable | |
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B* BT** |
Medium energy impact | 120 m/s (432 km/h) Steel ball with a diameter of 6 mm and a mass of 0,86 g |
Not applicable | |
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F* FT** |
Low energy impact | 45 m/s (162 km/h) Steel ball with a diameter of 6 mm and a mass of 0,86 g |
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| S | Increased resistance specification | 5,1 m/s (18,36 km/h) Steel ball with a diameter of 22 mm and a mass of 43 g |
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| none | Minimum resistance specification | |
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* If the symbol F, B or A is not found on both the lenses and the frame, then the lower value is assigned to the complete set of safety glasses.
** If protection is required against high speed particles at extreme temperatures (-5 °C and +55 °C), then the safety glasses should be marked with the letter T immediately following the letter indicating the impact resistance, i.e. FT, BT, AT. If the letter indicating the impact resistance is not followed by the letter T, then the safety glasses should be used only against high speed particles at room temperature.
OPTIONAL REQUIREMENTS
| SYMBOL | DESIGNATION |
|---|---|
| K | Resistance of the eyepieces to surface damage caused by fine particles |
| N | Resistance to fogging of the eyepieces |
| R | Increased reflectance of the eyepieces in the infrared |
| H | Frame designed for a small head |