Manufacturers producing glasses follow a certain form of standards to create glasses into perfection fit to protect your eyes from any form of threat like balls, pucks, sea spray, heat, wind blast, light and from other particulates. These standards include the key features which are a high velocity test, during high impact velocity testing should be performed by shooting a steel ball about a quarter inched size in diameter at the lens with a speed of at least 150 feet per second. The lens must not at all cost break, crack or chip to pass the test. The lens should not come off from its lens holder too.
The drop ball test is determined from the basic safety impact lenses classification. An inch diameter sized steel ball is dropped towards the lens from a height of about fifty inches. The lens also must not at all cost break, crack or chip to pass the test. Every kind of safety glass lenses should undergo this kind of test. Part of the American National Safety Standards Institute (ANSI) safety glass standards are the two classifications of performance which are the high impact and basic impact.
Another key feature of ANSI standards would be: if thinner prescription of Safety glasses pass the requirements set by high impact testing only then will they be allowed to be used. Non-prescription lenses generally used during high impact testing are considered structurally fragile than glasses manufactured using the same kind of material. Prescription lenses are usually made to be thicker like Safety glasses. Lenses are usually tested separately when using basic impact tests. Frames and lenses are tested simultaneously as a sole unit during high impact classification of Stylish safety glasses. These are just some of the updated safety glass standards provided by the American National Safety Standards Institute.
The drop ball test is determined from the basic safety impact lenses classification. An inch diameter sized steel ball is dropped towards the lens from a height of about fifty inches. The lens also must not at all cost break, crack or chip to pass the test. Every kind of safety glass lenses should undergo this kind of test. Part of the American National Safety Standards Institute (ANSI) safety glass standards are the two classifications of performance which are the high impact and basic impact.
Another key feature of ANSI standards would be: if thinner prescription of Safety glasses pass the requirements set by high impact testing only then will they be allowed to be used. Non-prescription lenses generally used during high impact testing are considered structurally fragile than glasses manufactured using the same kind of material. Prescription lenses are usually made to be thicker like Safety glasses. Lenses are usually tested separately when using basic impact tests. Frames and lenses are tested simultaneously as a sole unit during high impact classification of Stylish safety glasses. These are just some of the updated safety glass standards provided by the American National Safety Standards Institute.