Product Code:SAE J1861
Title:Air Brake Valve Input-Output Characteristic Requirements
Issuing Committee:Truck And Bus Brake Supply And Control Components Committee
Scope:This SAE Recommended Practice establishes minimum tolerance requirements for pilot operated and mechanically actuated modulating type valves, and through type valves used in the service brake control system when tested in accordance with the test procedure outlined in SAE J1859. This document applies to the nominal input-output characteristics as specified by vehicle original equipment manufacturer and labeled by the valve manufacturer as outlined in SAE J1860. The tolerance requirements will include:a.Crack (opening) pressure or force. Crack pressure may be measured at the initial output pressure or as the pressure differential before output pressure exceeds 14 kPa (2 psi). Crack force may be measured at initial output pressure or before output pressure exceeds 14 kPa (2 psi).b.Pressure differential (input-output)【英文标准名称】:StandardTestMethodforDeterminingtheActivityofIncorporatedAntimicrobialAgent(s)InPolymericorHydrophobicMaterials
【原文标准名称】:聚合或疏水材料中掺入抗菌剂的活性测定用标准试验方法
【标准号】:ASTME2180-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E35.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:疏水材料;微生物分析;微生物学;聚合材料;试验方法
【英文主题词】:agarslurry;hydrophobicsurface;percentbacterialreduction;plastics;polymers;quantitativeantibacterialassay
【摘要】:1.1Thistestmethodisdesignedtoevaluate(quantitatively)theantimicrobialeffectivenessofagentsincorporatedorboundintoorontomainlyflat(twodimensional)hydrophobicorpolymericsurfaces.Themethodfocusesprimarilyonassessingantibacterialactivity;however,othermicroorganismssuchasyeastandfungalconidiamaybetestedusingthismethod.1.2Thevehiclefortheinoculumisanagarslurrywhichreducesthesurfacetensionofthesalineinoculumcarrierandallowsformationofa"pseudo-biofilm,"providingmoreevencontactoftheinoculumwiththetestsurface.Note1Thistestmethodfacilitatesthetestingofhydrophobicsurfacesbyutilizingcellsheldinanagarslurrymatrix.Thistestmethod,aswritten,isinappropriatetodetermineefficacyagainstbiofilmcells,whicharedifferentbothgeneticallyandmetabolicallythanplanktoniccellsusedinthistest.1.3Thismethodcanconfirmthepresenceofantimicrobialactivityinplasticsorhydrophobicsurfacesandallowsdeterminationofquantitativedifferencesinantimicrobialactivitybetweenuntreatedplasticsorpolymersandthosewithboundorincorporatedlowwater-solubleantimicrobialagents.Comparisonsbetweenthenumbersofsurvivorsonpreservative-treatedandcontrolhydrophobicsurfacesmayalsobemade.1.4Theprocedurealsopermitsdeterminationof"shelf-life"orlongtermdurabilityofanantimicrobialtreatmentwhichmaybeachievedthroughtestingbothnon-washedandwashedsamplesoveratimespan.1.5Knowledgeofmicrobiologicaltechniquesisrequiredfortheseprocedures.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G32
【国际标准分类号】:07_100_01
【页数】:3P.;A4
【正文语种】: