Oxygen permeability test of contact lenses

The oxygen permeability of contact lenses is an important index of contact lenses The oxygen permeability of contact lenses directly affects the comfort of the wearer when wearing the lenses The contact lens oxygen permeability tester (to-c2 isobaric oxygen permeability tester) is suitable for the measurement of contact lens oxygen permeability The product details are as follows: toy-c2 isobaric method film / container oxygen permeability tester contact lens oxygen permeability tester features can measure oxygen permeability Dk / T and oxygen permeability coefficient DK microcomputer control, LCD display test parameters, test results host has test parameter settings; process data real-time printing function has test temperature and test gas humidity control function At the same time, the equipment with plastic film and finished product container testing function is equipped with RS232 interface and professional computer software, which can automatically resume the test process after power on The network transmission interface supports the centralized management of LAN data and Internet information transmission The standard film can be used to calibrate the instrument quickly Contact lens oxygen permeability tester testing principle Oxygen flows on one side of the sample, high-purity nitrogen flows on the other side of the sample, oxygen molecules diffuse through the sample to the nitrogen on the other side, and are carried to the oxygen analysis sensor by the flowing nitrogen Through the analysis of the oxygen concentration measured by the sensor, the oxygen gas transmittance of the sample is calculated When the finished product container is tested, nitrogen flows in the container, and air or high-purity oxygen surrounds the outer side of the container Technical index of contact lens oxygen permeability tester: Dk / T: 3 × 10-11 ~ 4.94 × 10-7 cm3 / cm2 S.mmhg 2 × 10-11 ~ 3.7 × 10-7 cm3 / cm2 S.hpa resolution: 2.47 × 10-11 cm3 / cm2 S.mmhg 1.85 × 10-11 cm3 / cm2 S.hpa test area: 0.888cm2 Temperature control range: 5 ℃ ~ 95 ℃ (test condition: 35 ℃ ± 0.5 ℃) temperature control accuracy: ± 0.1 ℃ humidity control range: 0% RH; 15% RH ~ 90% RH, 100% RH humidity control accuracy: ± 2% RH power supply: AC 220V 50Hz boundary dimension: 620 mm (L) × 460 mm (b) × 310 mm (H) net weight: 50kg contact lens oxygen permeability tester standard ISO 9913-2 contact lens oxygen permeability tester configuration Standard configuration: host, contact lens sample testing device, humidity control device, professional software, nitrogen cylinder precision pressure reducing valve, oxygen cylinder precision pressure reducing valve contact lens oxygen permeability tester options: container accessories, sealing accessories note: gas source user provided For more information, please call the headquarters of Jinan Languang Electromechanical Technology Co., Ltd Zhang Jianbo ()