文本内容:
ArdroxFluores__ntDyeIntroductionArdroxisahighlyfluores__ntdyestainwhichstainscyanoacrylate-developedlatentprints.Whenilluminatedwithanultr__ioletlamporForensicLightSour__latentprintsfluores__brightlyandweakly-developedlatentprintsthatcouldnotbeseenundernor__lviewingconditions__ybeeasilyseenandphotographed.BecauseArdroxisverysensitivetoultr__ioletlightitcanbeusedbyagenciesthatcannotaffordtopurchaseamoreexpensiveForensicLightSour__.SafetyAswithallchemicalsalwaysreadtheMSDS__terialsafetydatasheettolearnaboutthesafehandlingandhealthhazardsofeachchemical.WithArdroxitisrecommendedthatrubberglovesandsafetyglassesbeworn.Whencombinedwithanyofthesolventslistedbelowthesolutionshouldbemixedandusedinafumehood.Whenexaminingtheeviden__withalightsour__wearprotectivegoggles.Befamiliarwiththelightsour__andknowwhichgogglestowearunderallcircumstan__s.MixingInstructionsArdroxisathickyellowliquid.Itisrecommendedthatitbedilutedbeforeusing.The______stdilutionis2%Ardroxinmethanol.Inotherwords2mlofArdroxin100mlofmethanol.Thisdilutioncanbeadjustedto__keitstrongeraddanother1to2mlofArdroxorto__keitweakeronlyadd1mlofArdroxto100mlofmethanol.Anothersuggestedalternativesolutionistoadd1mlofArdroxto95mlofisopropylalcohol2-propanolandadd5mla__tronitrile.GlueFumingBeforeusingArdroxitisne__ssarytoglue-fumethepie__ofeviden__.Itisrecommendedtounderfumeratherthanoverfume.Ifhe__ywhiteresidueispresentonthebackgroundsu_____orhe__ywhitelatentprintsaredevelopedtheArdrox__ystaintheentiresu_____andthelatentprintswillappearasbrightglowingglobswithnoridgedetailwhenilluminatedwithalightsour__.Theuseoffast-actingchemicalcatalystsorac__leratorpadsisnotrecommendedasthepro__sscandevelophe__ywhiteresiduebeforethereactioncanbestopped.Pla__afewdropsofliquidglueoraHardEviden__™Pouchinaclosedcontainersuchasafishtankwiththeeviden__andacupofwarmwater.Allowtheeviden__tore__inabouttenminutesbeforechecking.Tochecktheprogressofthefumingwithoutopeningthelidofthefishtankpla__ablacklatentprintbackingcardinthetankwithtestprintsonit.Whenthesetestprintsarejustbecomingvisibleremovetheeviden__fromthetanktostopthepro__ss.FumingundervacuumwithaCole__nVacu-Print™willhelptoeliminatetheproblemsassociatedwithoverfuming.Vacuumtechnologyforgluefumingisrelativelynew.Thismethodwilldeveloplatentprintswithoutex__ssiveresiduecoatingthesu_____oftheeviden__anditwillbeeasiertohandletheeviden__.Becausethereisnoresiduebuildupontheeviden__dye-stainingforfluores__ntexaminationismoreeffective.DyessuchasRhodamine6GandArdroxadheretotheglueresidueontheitem.Whenthereisex__ssivebuildupoftheglueresiduethedyestainsallofitcausingtheentiresu_____tofluores__perhapsobscuringridgedetail.Withavacuumpro__ssitemsofeviden__suchasgarbagebagsdonoth__etobeopenedup.Thefumeswillcoatallofthesu_____s.Alsoitemssuchassodacansscrewdriversandhandgunscanbepla__dinsidethechamberwiththeitemstouchingeachother.Itisnotne__ssarytole__espa__betweeneachitem.Foradditionalinfor__tionontheCole__nVacu-Print™vacuumfumingchamberandgluefumingpro__ssesrequestthefreeTechnicalNote1-
4502.ApplicationInafumehoodapplytheArdroxsolutionbysubmergingtheeviden__inatrayorcontainer.“Washing”thesolutionoverthesu_____usingachemicalwashbottlecanalsobedonebutitisnotaseffectiveassoaking.Catchtherunoffsolutioninacleantrayanduseitagain.DONOTSPRAYTHISSOLUTION.Aone-tothree-minutesoakingintheArdroxsolutionshouldbelongenough.Rinsetheitemwithrunningtapwater.Allowtheitemtoair-drybeforeexaminingwithalightsour__.Analternativerinsesolution__yconsistof10mlofa__ticacidin100mlofmethanol.This__ybemoreeffectiveinrinsingtheex__ssresiduefromthebackgroundwithoutda__gingthelatentprints.Asbeforeallowtheitemtoair-drybeforeexaminingwithalightsour__.ExaminationDimtheroomlightsandshinethelightfromtheForensicLightSour__orultr__ioletlampoverthesu_____oftheo__ect.Along-w__elengthultr__ioletlampwithamoderatetohighintensityoutputcanbeusedeffectivelytoilluminatelatentprintsdevelopedwithArdrox.Photographthevisualizedlatentprints.Forthoseusingavariablew__elengthForensicLightSour__examinetheeviden__using450to480__lightandviewwithorangegoggles.Alsoexaminetheeviden__with365__w__elengthoflight.PhotographyTophotographthefluores__nt-developedlatentprintsduplicatethearrangementbywhichthebestcontrastwasviewedwiththeeye.Usethew__elengththecolorofviewinggogglesandtheangleofthelightsour__toobtainthebestphotograph.Includeafluores__ntscaleinthephotograph.Usingafine-grainblackandwhitefilmwithamediumƒstopƒ/8orƒ/11willgiveaphotographshowinghighlydefinedridgedetails.Theridgeswillbewhiteandthebackgroundwillbedarkintheresultingphotograph.Toreversethecoloroffluores__nt-developedlatentprintstakethephotographsusingslidefilmsuchasPolaroidPolaPantoseetheresultsinjustafewminutes.Printtheslidefilmonregularblackandwhitephotopapertoseetheridgesdarkandthebackgroundlight.AdditionalReadingAdvan__sinFingerprintTechnologyeditedbyDr.HenryLeeandDr.R.E.GaensslenFingerprintDetectionbyFluores__n__ExaminationbytheBritishHomeOffi__AnIntroductiontoLasersForensicLightsandFluores__ntFingerprintDetectionTechniquesbyDr.E.RolandMenzel。