Polar Star Safety Glasses

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We have a range of delivery options to suit our customers as we know every customer is unqiue. Below is a list of our standards options but we can always accommodate bespoke needs, simply call us on 03330 150 330.

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EN 166 Standard explained

EN166 is the core technical standard that applies to all safety eyewear including spectacles, goggles and visors. It does not apply to eye protection for which separate standards exist (anti-laser eye protection, sunglasses for general use).

1: OPTICAL REQUIREMENTS

1: OPTICAL REQUIREMENTS Tests include, transmission and diffusion of light, refractive properties, resistance to ageing (stability to heat and resistance to UV), corrosion and ignition. Results of the testing define the Optical Class of the eye protector: which falls into 1 of 3 categories, where 1 is the highest and 3 is the lowest as indicated in the table. These categories define the quality of the lens in terms of how much or how little distortion is experienced by the wearer.

2: MECHANICAL PROTECTION/IMPACT RESISTANCE

2: MECHANICAL PROTECTION/IMPACT RESISTANCE This test (applicable to both lens and frame) determines the impact resistance of the eye-protector (spectacles, goggles or visors) to withstand flying objects without cracking or shattering. The test is performed with steel balls of different diameters and weights which are used to strike the lens and frame at different speeds as indicated in the table. This results in 4 levels of mechanical protection denoted by the markings; ‘S’ ‘F’, ‘B’ or ‘A’ on the eye protector where ‘S’ is the lowest grade, offering the least amount of protection and ‘A’ is the highest grade offering maximum protection under the standard.

OPTIONAL REQUIREMENTS

EN 166 also describes other optional tests which must be applied should the manufacturer wish to make additional claims regarding protection. For example the Impact Resistance Against High Speed Spectacles At Extreme Temperature is conducted on spectacles/goggles and visors conditioned at extreme temperatures from -5°C /+55°C, resulting in similar markings as the above table, with a T denoting temperature: FT/ BT / AT. Note: This does not apply to the S marking category.

OTHER OPTIONAL REQUIREMENTS and corresponding markings for EN166 are described in the table below