Oscillating Tester Accessories
Article No. 15061
Bayer Testing Kit
The TABER® Bayer Abrasion Test Kit is used with the Oscillating Sand Abrasion Tester to replicate normal abrasion on the front of ophthalmic lenses.
Features
- This test is applicable to all plano lenses, and compares the specimen to a control lens.
- The degree of abrasion is measured by the amount of change in haze as measured by a hazemeter. A ratio that compares the increase in haze of the test lens to that of the ISO Reference Lens provides a measure of how much more abrasion resistant the test lens is compared to an uncoated lens.
Procedure
The Bayer Test compares the abrasion generated on a test lens against an ISO Reference Lens (uncoated CR-39® lens). Both lenses are mounted in a special Bayer Test lens holder that allows the curvature of the lenses to protrude above the bottom of the tray. A standardized abrasive media referred to as Alundum® ZF-12 is into the tray. The tray is reciprocated in a back-and-forth (to-and-fro) motion a distance of 4 inches, at 150 cycles per minute for 4 minutes. Following the test, two lenses are removed from the tray and the amount of abrasion is measured and compared.
Delivery Content
Kit includes test pan, Alundum 2F-12 abrasive media (50 lbs) and standard CR-39 lenses (5 pr).
Other Variations