【英文标准名称】:StandardPracticeforPreparationofSolutionofSolid,PastyandPowderedVegetableTanninExtracts
【原文标准名称】:固体状、浆糊状和粉末状植物鞣皮材料提取物溶液的制备标准实施规范
【标准号】:ASTMD4905-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D31.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:植物;鞣皮制件;溶液
【英文主题词】:analyticalsolution;tanninanalysis;vegetabletanninanalysis
【摘要】:Theconcentrationoftanninsinsolid,pasty,andpowderedextractsneedstobereducedtoanalyticalstrengthfortanninanalyses.4.2Vegetabletanninextractsareheterogeneousmixturesofcomponentswithvaryingsolubility.4.3Thesolubilityofsuchextractsisinfluencedbytemperatureandconcentration,whichaffectthedegreeofdispersionandsizeofthecomponentparticles.4.4Sinceextractshavegreatersolubilityinhotwaterthancold,itisdesirabletodissolveanddisperseanextractinhotwaterandthenletthesolutioncoolslowlytostandardroomtemperature.Itisoftendifficulttoreducesamplesofsolidandparticularlypastyextractstospecimensizeandatthesametimeensurerepresentativesampling.Therefore,cautionisadvisedindrawingconclusionsontheprecisionandbiasoftheresultsobtainedonsuchextracts;wheredifficultiesinsamplepreparationareexperienced,littleconfidencecanbeplacedintheresults.1.1Thispracticecoversastandardprocedureforuseinpreparingtheanalyticalsolutionrequiredfortheanalysisofsolid,pasty,orpowderedvegetabletanninextracts.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Y45
【国际标准分类号】:
【页数】:2P.;A4
【正文语种】:


【英文标准名称】:Columnsandothervessels;platformsincludingaccesses
【原文标准名称】:塔和其它装置.平台包括入口
【标准号】:DIN28017-1-1991
【标准状态】:作废
【国别】:德国
【发布日期】:1991-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:舞台;工艺工程;仪器工程;工作架;应力分析;数学计算;塔柱(玻璃);通路;化工技术;材料;元部件;化工设备;尺寸;设计
【英文主题词】:apparatusengineering;materials;components;staging;stages;chemicaltechnologyequipment;chemicaltechnology;access;columns(glass);stressanalysis;processengineering;design;mathematicalcalculations;
【摘要】:
【中国标准分类号】:G93
【国际标准分类号】:71_120_10
【页数】:10P;A4
【正文语种】:德语