作者:标准资料网 时间:2024-05-04 22:04:39   浏览:8746   来源:标准资料网

【英文标准名称】:Opticsandopticalinstruments-Contactlenses-Part2:Determinationofoxygenpermeabilityandtransmissibilitybythecoulometricmethod
【原文标准名称】:光学和光学仪器接触镜第2部分:用库仑法对氧渗透性和可透性的测定
【标准号】:ISO9913-2-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-02
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC172
【标准类型】:()
【标准水平】:()
【中文主题词】:渗透率;透射率;光学仪器;库仑法;透气性;接触镜片;氧;测定;光学;试验
【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.ThispartofISO9913isespeciallyusefulforthedeterminationofpermeabilityvaluesabove75×10(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】:11P;A4
【正文语种】:英语