ASTM C 140-1995 混凝土砌块的取样和检验方法

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Product Code:SAE AMSQQA225/3
Title:Aluminum Alloy, Bar, Rod, and Wire, Rolled, Drawn, or Cold Finished, 2011 (Cancelled Jun 2007, Superseded by ASTM B 211)
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:This specification covers the specific requirements for aluminum alloy 2011 bar, rod, and wire produced by rolling, drawing, or cold finishing.【英文标准名称】:StandardTestMethodforNitrogenContentofSolubleNitrocellulosex2014;AlternativeMethod
【原文标准名称】:可溶行硝化纤维素中氮含量的标准试验方法.交替法
【标准号】:ASTMD4795-1994(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1994
【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】:D01.36
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:氮含量
【英文主题词】:nitrogencontent;solublenitrocellulose;Celluloseandcellulosederivatives;Ferroussulfatetitration;Nitrocellulose;Nitrogencontent;Solublenitrocellulose
【摘要】:ThistestmethodprovidesasimplermeansformeasuringthenitrogencontentofnitrocellulosethanthenitrometerdescribedinTestMethodsD301.Undercontrolledconditions,theproceduredescribediscapableofresultsequivalenttothoseobtainedbythenitrometer.1.1TestMethodsD301formeasuringnitrogencontentinnitrocellulosebynitrometeraretheacceptedstandard.However,theglasswareisspecializedandtheprecisionisdependentonthedevelopmentofahighlevelofskillbytheoperator.Theferrous-sulfatetitrationofnitrateisaclassicalprocedure.Bycontrollingcriticalvariablesandautomatingtheactualtitration,precisionequivalenttothenitrometercanbeachievedwithnitrocellulose.Thistestmethoddescribessuchaprocedure.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection8.
【中国标准分类号】:Y30
【国际标准分类号】:85_040
【页数】:3P.;A4
【正文语种】:英语