BS EN ISO 9913-2-2000 光学和光学仪器.接触镜.用库仑法测定氧渗透性和可透性

作者:标准资料网 时间:2024-05-17 07:13:29  浏览:8380   来源:标准资料网

【英文标准名称】:Opticsandopticalinstruments-Contactlenses-Determinationofoxygenpermeabilityandtransmissibilitybythecoulometricmethod
【原文标准名称】:光学和光学仪器.接触镜.用库仑法测定氧渗透性和可透性
【标准号】:BSENISO9913-2-2000
【标准状态】:作废
【国别】:英国
【发布日期】:2000-05-15
【实施或试行日期】:2000-05-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:光学仪器;试验设备;刚度;接触镜片;物理性能测量;渗透性测量;光学;氧;渗透率;眼科设备;试样制备;挠性;库仑法;试样;试验条件
【英文主题词】:Contactlenses;Coulometricmethods;Definition;Definitions;Determination;Gaspermeability;Measurement;Ophtalmicoptics;Opticalinstruments;Optics;Oxygen;Permability;Permeability;Testing;Transmittance
【摘要】:ThispartofISO9913describesacoulometricmethodforthedeterminationofoxygenpermeabilityofbothrigidandnon-hydrogelflexiblecontactlensmaterialsandoxygentransmissibilityofrigidandnon-hydrogelflexiblecontactlenses.Itspecifiestheproceduresforthemeasurementsandestablishestheconditionsunderwhichmeasurementsaremade.ThispartofISO9913isapplicabletothedeterminationofoxygentransmissibilityofrigidandnon-hydrogelflexiblecontactlenses,incorporatingvariousrefractivepowersandradiallysymmetriccontactlensgeometries,andtheoxygenpermeability(Dk)ofrigidandnon-hydrogelflexiblecontactlensmaterialsintheformofstandardizedtestsamples.ThispartofISO9913isespeciallyusefulforthedeterminationofpermeabilityvaluesabove75×11(cm/s)[mlO2/ml·hPa)],whichfallabovetheusualrangeofthestandardpolarographicmethodofmeasurement(FATTmethod,seeISO9913-1).ThispartofISO9913isnotapplicabletohydrogelmaterialsorhydrogelcontactlenses.
【中国标准分类号】:N30
【国际标准分类号】:11_040_70
【页数】:22P;A4
【正文语种】:英语