Plastometric indices tester YZS-100B

Oxygen Index Apparatus/LOI (Limitation Oxygen Index tester) is widely used to measure burning performance of plastics, rubber, fiber, foam, softening sheet, film etc., The Oxygen Index is, perhaps, the most economical and precise quality control test of combustible materials. Its ease of use together with high levels of precision has made this technique a primary characterising and quality control tool to the plastic and electric cable industries and it has been specified by several military and transport groups. The technique measures the minimum percentage of oxygen in the test atmosphere that is required to marginally support combustion. Feature of YZS-100B: Digital display the LOI value directly, no need calculation personally. Digital meter display the gas pressure. Test Procedure: A small test specimen is supported vertically in a mixture of oxygen and nitrogen flowing upwards through a transparent chimney. The upper end of the specimen is ignited and the subsequent burning behaviour of the specimen is observed to compare the period for which burning continues, or the length of the specimen burnt, with specified limits for such burning. By testing a series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated. Test Sample information: Complete test series: Sample quantity: 20 samples Dimensions: 80 – 150 mm x 10 mm, thickness 4 or 10 mm. Reduced test series, one specified oxygen concentration Sample quantity: 8 samples Dimensions: 80 – 150 mm x 10 mm, thickness 4 or 10 mm. Other name: Oxygen index testing equipment; oxygen limitation index value tester; LOI tester