TRS Model K-316 IPI Type Film Oxygen Permeability Meter

Abstract

While the test standard exists for conventional types of contact lenses to determine their Oxygen Permeabilities (DK Values) by Electrode Method (FATT Method) in accordance with ISO 9913-1, there has been no such standard established for optional coloured types.
In the meantime, with an increase in recent medical accident cases reported as owing to wide and extensive use of these coloured types, or their abuse, such as Angiogenesis (generation of new blood vessels) on the cornea by insufficient supply of oxygen, Ministry of Health, Labour and Welfare, Government of Japan legislated lately on April 28, 2009 that the colored types in question shall be tested for DK Values by FATT Method in accordance with ISO 18369- 4. This TRS Model K-316, introduced to meet needs under the circumstances above, is designed to allow the easy and time-saving determination of oxygen permeabilities pertinent to polymers materials and products ranging widely from films, sheets to membranes of medical applications , especially, soft contact lenses in commercially available product shape.
Presented here are features of TRS Model K-316, its Measurement Method and Principle, and Measurement Examples (by both TRS Models K-316 and K-315-N GAS PERMEABILITY TESTER per Differential Pressure Method).