What is the EN 166 standardization?



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We are known for supplying high-quality products that always meet today's stringent standards. What are these standards? Read more about our European standards in this knowledge article.

DIN EN 166

The NEN-EN 166 lists the basic properties that all eye protection equipment must meet. Eye protection consists of two main components. Namely lenses of mineral glass or plastic and the frame of metal or plastic. Both parts must meet the inspection requirements for the glasses to be called safety glasses.

EN 166:2001 is the European standard that covers the requirements for safety glasses. It is closely related to EN 167:2001 and EN 168:2001 which specify optical and non-optical test methods.

prescription safety glasses with EN 166 requirements

EN 166 specifies the minimum requirements for a set of performance tests. This standard contains a set of requirements that can be considered mandatory. According to Arbogids 2018 in the Netherlands, frames intended for safety glasses should meet these general values:

  • General conditions: fitted with safety glass (EN166)
  • Mechanical strength (EN 166): drop test with a ball of 43 grams, drop height 130cm. The requirement must be met at -5 degrees Celcius and at 55 degrees.
  • Flammability requirement
  • Corrosion resistance
  • Skin contact parts must not be allergenic or irritating
  • Glasses must be easily disinfectable
  • Glasses must be able to be fitted by an optician

If all the above requirements are met, the frame is approved. With this approval, the CE mark may be affixed. Seeh frames always meet these strict standardized requirements.

Are you curious about all of Seeh's frames with EN 166 standards? View all frames here.

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