AOAC Appendix B Laboratory Safety

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1、AppendixB:LaboratorySafetyArgentinaG.Vindiola,ChapterEditorOfficeoftheTexasStateChemistIntroductionFireExtinguishersAOACOFFICIALMETHODSOFANALYSIS(1995)ClassBandCdrychemicalfireextinguishers(forflammableliq-Thischapterisnotintendedtobeanexhaustivetreatiseonla

2、bora-uidandelectricfires)shouldbeconvenientlyavailabletoeachlabo-torysafety.Theseprecautionarynotesserveonlyasareminderofratoryroom.Carbondioxidefireextinguishersshouldbeusedonpossiblehazardsinvolvedintheuseofparticularoperationsorsub-firesinelectronicequipm

3、ent.stances.RefertorecommendedtextsatendofchapterforfullerBecomefamiliarwiththelocationofallfireextinguishersandthetreatmentofsubject.Followsafetyrequirementsofthoseintheappropriatemethodsfortheireffectiveuse.country,region,orjurisdictionwithinwhichyourorgan

4、izationissit-uated.ConsultguidelinesissuedbyprofessionalassociationsandBlendersgovernmentagencies.Motoronhigh-speedblendersusedtomixflammablesolventwithothermaterialsshouldbeexplosion-proof.Blendtoxicorflam-CautionaryStatementsmableliquidsineffectivefume-rem

5、ovaldevice.CentrifugesNatureandamountofeachchemicalanditsprescribedusewerecriteriausedindeterminingifcautionarystatementformethodwasAdjustalltubestoequalweightbeforeloadingthemintocen-indicated.Safetyhazardwasconsideredtoexistwhennature,trifuge.Makecertainth

6、atstoppersoftubesplacedinpivot-typeamount,anduseofchemicalorequipmentspecifiedinmethodap-headwillclearcenterwhentubesswingtohorizontal.Donotpearedlikelytoproduceanyofthefollowing:opencentrifugecoveruntilmachinestopscompletely.Beforere-(a)Concentrationofvapor

7、sfromflammableliquidexceedingmovingtubes,turnelectricswitchto“off.’’Donotrelyon25%oflowerflammabilitylimitofthatliquiddescribedbyNationalzero-setrheostat.Useonlytubesspeciallydesignedforcentrifug-FireProtectionAssociation,Boston,MA,USA.ing.Donotexceedsafespe

8、edforvarioustubematerials(glass,cellulosenitrate,polyethylene,etc.)recommendedbytubemanu-(b)Contactbetweenanalystandamountsofmaterialhighlyac-facturer.Cellulosenitratetubesmayexplodeifautoclaved