Product Code:SAE AS4408
Title:Fitting Assembly, Elbow 90掳, Reducer and Nonreducer, Internal Flare
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:No scope available.
基本信息
| 标准名称： | 进口可作原料用木及木制品废料检验规程(试行) |
| 英文名称： | Rules for the inspection of waste wood and waste wooden products to be used as raw material for import |
| 中标分类： |
农业、林业 >>
林业 >>
林业基础标准与通用方法 |
| 替代情况： | 被SN/T 1791.3-2006代替 |
| 发布日期： | 1996-09-25 |
| 实施日期： | 1996-10-01 |
| 首发日期： | |
| 作废日期： | 2007-03-01 |
| 出版日期： | |
| 页数： | 6页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 农业 林业 林业 林业基础标准与通用方法
【英文标准名称】:StandardTestMethodforResidualChlorineinWater
【原文标准名称】:水中残余氯的标准试验方法
【标准号】:ASTMD1253-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D19.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:amperometric;analysis;chlorine;water;Chlorinecontent--water;Inorganicchemicalanalysis--water;Inorganiccompounds--water;Residualchlorine
【摘要】:Chlorineisusedtodestroyordeactivateavarietyofunwantedchemicalsandmicroorganismsinwaterandwastewater.Anuncontrolledexcessofchlorineinwater,whetherfreeavailableorcombined,canadverselyaffectthesubsequentuseofthewater.1.1Thistestmethodcoversthedeterminationofresidualchlorineinwaterbydirectamperometrictitration.1.2WithintheconstraintsspecifiedinSection6,thistestmethodisnotsubjecttocommonlyencounteredinterferencesandisapplicabletomostwaters.Somewaters,however,canexertaniodinedemand,usuallybecauseoforganicmaterial,makinglessiodineavailableformeasurementbythistestmethod.Thus,itispossibletoobtainfalselylowchlorinereadings,eventhoughthetestmethodisworkingproperly,withouttheuser''sknowledge.1.3Precisiondataforthistestmethodwereobtainedonestuary,inlandmainstemriver,freshlake,openocean,andfreshcoolingtowerblowdownwater.Biasdatacouldnotbedeterminedbecauseoftheinstabilityofsolutionsofchlorineinwater.Itistheuser''sresponsibilitytoensurethevalidityofthetestmethodforuntestedtypesofwater.1.4Inthetestingbywhichthisstandardwasvalidated,thedirectandbackstarch-iodidetitrationsandtheamperometricbacktitration,formerlypartofthisstandard,werefoundtobeunworkableandwerediscontinuedin1986.HistoricalinformationispresentedinAppendixX1.Note18212;Orthotolidinetestmethodshavebeenomittedbecauseofpoorprecisionandaccuracy.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:5P.;A4
【正文语种】:英语