ASTM E1910-2004 农用pH控制剂的试验方法

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【英文标准名称】:TestMethodforAgriculturalpHControlAgents
【原文标准名称】:农用pH控制剂的试验方法
【标准号】:ASTME1910-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:E35.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验方法;农业;pH值;pH值测定
【英文主题词】:acidifier;adjuvant;agriculturaladjuvant;basicblend;pH
【摘要】:Thistestmethodisintendedforproductssoldastankmixadjuvantsforusewithagriculturalproducts.PartAprovidesadeterminationofwhetherthepHmodificationcharacteristicsoftheadjuvanttestedmeetthedefinitionofanacidifier,alkalinityagent,orabasicblendinTerminologyE1519.PartBprovidesameasureofthebuffercapacityoftheadjuvant.ThiscanbeusedtoestimatetheamountofabufferthatwillberequiredtokeepaspraysolutionatthedesiredpH.OtherpHstandardscanbeused(seeTestMethodE70)aslongasthepHsmeasuredarenotoutsidetherangeofthestandardsused.Ifsamplesofthematerialtobeusedinaparticularapplicationareavailable,thefirstmethodcanbeusedtodeterminewhatadjuvantrateisrequiredtoobtainthedesiredpH.TheabilityofanadjuvanttoadjustthepHofaparticularsystemwilldependontheinitialpHbeforeaddition.ThesecondmethodcanbeusedtodeterminetheamountofanadjuvantrequiredtochangethepHofaquantityofspraysolutiontotherequiredvalue(seeNote1).Note18212;Manyacidifiersandbasicblendsalsoarebuffers,sothepHchangedoesnotprovideausefulmeasureofbuffercapacity.1.1ThesetestmethodscoverdeterminingifanadjuvantmeetsthedefinitionofanacidifierinTerminologyE1519.1.2Thevaluesstatedinbothinch-poundandSIunitsaretoberegardedseparatelyasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G21
【国际标准分类号】:65_020_99
【页数】:3P.;A4
【正文语种】: