hellen82424 发表于 2008-10-29 21:15:58

ASTM B117-07

盐雾测试标准，供大家参考!

yeh 发表于 2008-10-30 07:55:16

Thesaltsolutionshallbepreparedbydissolving561partsbymassofsodiumchloridein95partsofwaterconformingtoTypeIVwaterinSpecificationD1193(exceptthatforthispracticelimitsforchloridesandsodiummaybeignored).Carefulattentionshouldbegiventothechemicalcontentofthesalt.Thesaltusedshallbesodiumchloridewithnotmorethan0.3%bymassoftotalimpurities.Halides(Bromide,Fluoride,andIodide)otherthanChlorideshallconstitutelessthan0.1%bymassofthesaltcontent.Coppercontentshallbelessthan0.3ppmbymass.Sodiumchloridecontaininganti-cakingagentsshallnotbeusedbecausesuchagentsmayactascorrosioninhibitors.SeeTable1foralistingoftheseimpurityrestrictions.Uponagreementbetweenthepurchaserandtheseller,analysismayberequiredandlimitsestablishedforelementsorcompoundsnotspecifiedinthechemicalcompositiongivenabove.
ThepHofthesaltsolutionshallbesuchthatwhenatomizedat35°C(95°F)thecollectedsolutionwillbeinthepHrangefrom6.5to7.2.Beforethesolutionisatomizeditshallbefreeofsuspendedsolids.ThepHmeasurementshallbemadeat25°C(77°F)usingasuitableglasspH-sensingelectrode,referenceelectrode,andpHmetersysteminaccordancewithTestMethodE70.

a280221580 发表于 2014-12-30 09:50:11

谢谢分享！！！！！！！！！

shan2_123 发表于 2017-5-3 14:44:07

TＨＡＮＫＳ．．．
页: [1]
查看完整版本: ASTM B117-07