commiss direct decemb approxim law member state relat method analysi check composit cosmet product eec commiss european commun regard treati establish european econom commun regard council direct eec juli approxim law member state relat cosmet product amend direct eec articl thereof direct eec offici test cosmet product aim ensur condit prescrib pursant commun provis composit cosmet product satisfi method analysi establish lai method sampl laboratori prepar identif determin free sodium potassium hydroxid identif determin oxal acid alkalin salt thereof hair care product determin chloroform toothpast zinc identif determin phenolsulfon acid constitut step direct measur laid present direct conform opinion committe adapt direct eec technic progress adopt direct articl member state step ensur offici test cosmet product sampl laboratori prepar test sampl identif determin free sodium potassium hydroxid identif determin oxal acid alkalin salt hair care product determin chloroform toothpast determin zinc identif determin phenolsulfon acid perform accord method annex articl member state bring forc law regul administr provis compli direct decemb forthwith inform commiss thereof articl direct address member state brussel decemb commiss richard burk member commiss oj oj annex sampl cosmet product scope field applic procedur sampl cosmet product view analysi laboratori definit basic sampl unit batch offer sale total sampl sum basic sampl batch number laboratori sampl repres fraction total sampl analyz individu laboratori test portion repres portion laboratori sampl requir analysi contain articl product continu direct contact sampl procedur cosmet product sampl origin contain forward analyt laboratori unopen cosmet product market bulk retail contain origin manufactur pack instruct sampl point sale issu number basic sampl requir prepar laboratori sampl determin analyt method number analys perform laboratori sampl identif sampl seal identifi accord rule forc relev member state basic sampl label inform cosmet product date time place sampl person respons take sampl inspector report sampl drawn accord rule forc relev member state storag sampl basic sampl store accord manufactur instruct appear label condit laboratori sampl store dark ºc basic sampl open analysi begin ii laboratori prepar test portion gener analysi carri basic sampl basic sampl small minimum number basic sampl mix take test portion open contain inert ga analyt method withdraw number test portion requir quickli analysi proce delai sampl preserv contain reseal inert ga cosmet product prepar liquid solid form semi solid form separ initi homogen product occur homogen take test portion cosmet product put sale special result treat accord instruct provis made relev method examin origin procedur adopt provid set write part analysi report liquid occur form product solut oil alcohol water toilet water lotion milk pack flask bottl ampoul tube withdraw test portion shake contain vigor open open contain pour millilitr liquid test tube visual examin charact purpos take test portion reseal contain withdraw requir test portion reseal contain carefulli semi solid occur form product past cream stiff emuls gel pack tube plastic bottl jar withdraw test portion narrow neck contain expel centimetr product extrud test portion reseal contain immedi wide neck contain scrape surfac evenli remov top layer test portion reseal contain immedi solid occur form product loos powder compact powder stick pack wide varieti contain withdraw test portion loos powder shake vigor unstopp open open remov test portion compact powder stick remov surfac layer scrape test portion underneath product pressur packag quot aerosol dispens quot product defin articl council direct eec test portion vigor shake repres quantiti content aerosol dispens transfer aid suitabl connector figur specif case analyt method requir connector plastic coat glass bottl figur fit aerosol valv fit dip tube transfer bottl held valv transfer render content visibl case oj aerosol product form homogen solut direct analysi aerosol product consist liquid phase phase analyz lower phase separ transfer bottl case transfer bottl held valv case lower phase aqueou devoid propel butan water formul aerosol product powder suspens liquid phase analyz remov powder foam cream product weigh transfer bottl methoxyethanol substanc prevent foam form degass oper expel propel gase loss liquid accessori connector figur made duralumin brass design fit valv system polyethylen adaptor connector figur transfer bottl figur made white glass coat protect layer transpar plastic materi hold ml fit aerosol valv dip tube method order sampl transfer transfer bottl purg air purpos introduc connector ml dichlorodifluoromethan butan depend aerosol product examin dega complet liquid phase disappear hold transfer bottl valv uppermost remov connector weigh transfer bottl quot quot gram vigor shake aerosol dispens sampl attach connector valv sampl aerosol contain valv upward fit transfer flask neck connector press fill transfer bottl third full transfer ceas prematur ow pressur equal resum chill transfer bottl remov connector weigh fill bottl quot quot gram determin weight aerosol sampl transfer sampl obtain normal chemic analysi analysi volatil constitu ga chromatographi chemic analysi hold transfer bottl valv upward proce dega degass oper rise foam transfer bottl weigh quantiti methoxyethanol previous introduc syring connector complet remov volatil constitu loss shake waterbath maintain ºc detach connector reweigh transfer bottl quot quot gram order determin weight residu nb calcul weight residu deduct weight methoxyethanol open transfer bottl remov valv dissolv residu complet quantiti solvent perform desir determin aliquot formula calcul gt pic file quot quot gt mass aerosol transfer bottl mass residu heat ºc percentag substanc determin method percentag substanc aerosol receiv total mass substanc aerosol dispens net mass initi aerosol dispens basic sampl analysi volatil constitu ga chromatographi principl ga chromatographi syring remov quantiti transfer bottl inject content syring ga chromatograph accessori seri quot precis sampl quot ga chromatographi syring figur equival syring equip slide valv needl end syring connect transfer bottl connector bottl polyethylen tube length mm intern diamet mm syring method quantiti aerosol product transfer bottl fit conic end syring transfer bottl open valv aspir suitabl quantiti liquid elimin ga bubbl oper plunger time chill syring close valv syring quantiti bubbl free liquid detach syring transfer bottl fit needl insert syring ga chromatograph injector open valv inject intern standard intern standard requir introduc transfer bottl mean ordinari glass syring connector gt pic file quot quot gt gt pic file quot quot gt gt pic file quot quot gt gt pic file quot quot gt iii determin identif free sodium potassium hydroxid scope field applic method specifi procedur identifi cosmet product signific amount free sodium potassium hydroxid determin free sodium potassium hydroxid hair straighten prepar nail cuticl solvent prepar definit free sodium potassium hydroxid defin volum standard acid requir neutral product condit result quantiti express free sodium hydroxid principl sampl dissolv dispers water titrat standard acid ph record concurr addit acid simpl solut sodium potassium hydroxid end point clear cut maximum rate chang record ph simpl titrat curv obscur presenc ammonia weak organ base flat titrat curv ammonia remov method evapor reduc pressur room temperatur salt weak acid give rise titrat curv point inflect case part curv point inflect correspond neutral hydroxyl ion come free sodium potassium hydroxid altern procedur titrat alcohol excess interfer salt weak inorgan acid whilst theoret possibl exist solubl strong base lithium hydroxid quaternari ammonium hydroxid present give rise high ph presenc type cosmet product highli identif reagent standard alkalin buffer solut ph ºc sodium tetrabor decahydr apparatu usual laboratori glasswar ph meter glass membran electrod standard calomel refer electrod procedur calibr ph meter electrod standard buffer solut prepar solut dispers product analyz water filter measur ph ph quantit determin carri determin titrat aqueou medium reagent standard hydrochlor acid apparatu usual laboratori glasswar ph meter prefer record glass membran electrod standard calomel refer electrod procedur weigh accur ml beaker test portion ammonia present add anti bump granul place beaker vacuum desicc evacu water pump odour ammonia longer detect hour add ml water dissolv dispers residu titrat hydrochlor acid solut record chang ph calcul identifi point inflect titrat curv point inflect occur ph sampl free sodium potassium hydroxid point inflect curv relev note volum titrant point inflect repres volum titrant ml repres weight test portion gram content sodium potassium hydroxid sampl express sodium hydroxid calcul formula gt pic file quot quot gt situat aris indic presenc signific quantiti sodium potassium hydroxid titrat curv fail show distinct point inflect case determin repeat isopropanol titrat isopropanol reagent isopropanol standard aqueou hydrochlor acid hydrochlor acid isopropanol prepar immedi dilut aqueou hydrochlor acid isopropanol apparatu usual laboratori glasswar ph meter prefer record glass membran electrod standard calomel refer electrod procedur weigh accur ml beaker test portion ammonia present add antibump granul place beaker vaccum desicc evacu water pump odour ammonia longer detect hour add ml isopropanol dissolv dispers residu titrat hydrochlor acid ispropanol record chang appar ph calcul point inflect appar ph repeat sodium potassium hydroxid content rang sodium hydroxid differ result determin carri parallel sampl exce absolut iso di iv determin identif oxal acid alkalin salt hair care product scope field applic method suitabl determin identif oxal acid alkalin salt hair care product colourless aqueou alcohol solut lotion oxal acid equival quantiti alkalin oxal definit content oxal acid alkalin salt determin method express percentag mass free oxal acid sampl principl remov anion surfac activ agent present toluidin hydrochlorid oxal acid oxal precipit calcium oxal solut filter precipit dissolv sulphur acid titrat potassium permangan reagent reagent analyt puriti ammonium acet solut calcium chlorid solut ethanol carbon tetrachlorid diethyl ether toluidin dihydrochlorid solut potassium permangan solut sulphur acid hydrochlor acid sodium acet trihydr acet acid glacial sulphur acid satur barium hydroxid solut apparatu separ funnel ml beaker ml ml glass filter crucibl measur cylind ml ml pipett ml suction flask ml water jet pump thermomet graduat ºc magnet stirrer heat element magnet stir rod teflon coat burett ml conic flask ml procedur weigh sampl ml beaker bring ph dilut hydrochlor acid wash separ funnel ml distil water add success ml ethanol ml toluidin dihydrochlorid solut ml carbon tetrachlorid shake mixtur vigor separ phase remov lower organ phase repeat extract reagent mention remov organ phase wash aqueou solut ml beaker remov carbon tetrachlorid present boil solut add ml ammonium acet solut bring solut boil stir ml hot calcium chlorid solut boil solut precipit settl check precipit complet ad drop calcium chlorid solut cool room temperatur stir ml ethanol leav stand minut filter liquid glass filter crucibl transfer precipit small quantiti hot water ºc filter crucibl wash precipit cold water wash precipit time ethanol time diethyl ether dissolv precipit ml hot sulphur acid draw filter crucibl reduc pressur transfer solut loss conic flask titrat potassium permangan solut light pink colour occur calcul content sampl express oxal acid percentag mass calcul formula gt pic file quot quot gt consumpt potassium permangan measur accord test quantiti sampl gram convers factor oxal acid repeat oxal acid content differ result determin parallel carri sampl exce absolut identif principl oxal acid oxal precipit calcium oxal dissolv sulphur acid solut ad potassium permangan solut turn colourless format carbon dioxid result carbon dioxid pass barium hydroxid solut white precipit milki barium carbon form procedur treat portion sampl analyz section remov deterg present add spatula tip sodium acet ml solut obtain accord acidifi solut drop glacial acet acid add calcium chlorid solut filter dissolv calcium oxal precipit ml sulphur acid transfer solut test tube add drop wise ml potassium permangan solut oxal present solut lose colour gradual rapidli immedi ad potassium permangan place glass tube stopper test tube heat content slightli collect carbon dioxid form satur barium hydroxid solut appear minut milki cloud barium carbon presenc oxal acid iso di determin chloroform toothpast scope field applic method determin chloroform toothpast ga chromatographi method suitabl determin chloroform level definit chloroform content determin method express percentag mass product principl toothpast suspend dimethylformamid methanol mixtur ad quantiti acetonitril intern standard centrifug portion liquid phase subject ga chromatographi chloroform content calcul reagent reagent analyt puriti porapak chromosorb equival mesh acetonitril chloroform dimethylformamid methanol intern standard solut pipett ml dimethylformamid ml standard flask add mg mg acetonitril accur weigh make mark dimethylformamid mix solut determin rel respons factor pipett ml intern standard solut ml standard flask add mg mg chloroform accur weigh make mark dimethylformamid mix apparatu equip analyt balanc ga chromatograph flame ioniz detector micro syring capac graduat bulb pipett capac ml volumetr flask ml test tube approxim ml screw cap sovirel franc equival screw cap intern seal plate coat side teflon centrifug procedur suitabl ga chromatographi condit column materi glass length cm intern diamet mm extern diamet mm pack column porapak chromosorb equival mesh acid vibrat detector flame ioniz adjust sensit solut inject height acetonitril peak quarter full scale deflect gase carrier nitrogen flow rate ml min auxiliari adjust flow gase detector flow air oxygen time hydrogen temperatur gt pic file quot quot gt chart speed cm hour sampl prepar sampl analysi unopen tube remov content replac cap tube mix carefulli tube test portion determin weigh screw cap tube nearest mg mo toothpast prepar accord section add small glass bead pipett ml intern standard solut ml dimethylformamid ml methanol tube close tube mix shake half hour mechan shaker centrifug close tube minut speed produc clear separ phase note occasion liquid phase cloudi centrifug improv obtain ad sodium chlorid liquid phase allow settl recentrifug inject solut condit section repeat oper condit retent time guid valu gt pic file quot quot gt determin rel respons factor inject solut determin factor repeat oper determin rel respons factor daili calcul calcul rel respons measur height width half height acetonitril chloroform peak calcul area peak formula height width half height determin area acetonitril chloroform peak chromatogram obtain accord section calcul rel respons fs aid formula gt pic file quot quot gt fs rel respons factor chloroform area chloroform peak ai area acetonitril peak ms quantiti chloroform mg ml solut refer section mi quantiti acetonitril mg ml solut refer section calcul read obtain calcul chloroform content calcul accord item area chloroform acetonitril peak chromatogram obtain procedur section calcul chloroform content toothpast aid formula gt pic file quot quot gt chloroform content toothpast express mass area chloroform peak ai area acetonitril peak msx mass mg sampl refer section mo mi quantiti acetonitril mg ml solut obtain accord section calcul level found express result accuraci repeat chloroform content differ result determin parallel carri sampl exce absolut vi determin zinc scope field applic method suitabl determin zinc present chlorid sulphat hydroxybenzenesulphon associ zinc salt cosmet definit zinc content sampl determin gravimetr bi methyl quinolyl oxid express percentag mass zinc sampl principl zinc present solut precipit acid medium zinc bi methyl quinolyl oxid filtrat precipit dri weigh reagent reagent analyt puriti gt pic file quot quot gt glacial acet acid ammonium acet methylquinolin ol ammonia solut transfer concentr ammonia ml standard flask make mark distil water mix ammonium acet solut dissolv ammonium acet distil water make mark ml standard flask mix methylquinolin ol solut dissolv methylquinolin ol ml glacial acet acid transfer distil water ml standard flask make mark distil water mix apparatu equip standard flask ml beaker ml measur cylind ml graduat pipett ml iso di glass filter crucibl vacuum flask ml water jet pump thermomet graduat ºc desicc suitabl desicc humid indic silicagel equival dry oven regul temperatur ºc ph meter hot plate procedur weigh ml beaker gram mg zinc sampl analyz add ml distil water mix mg zinc present solut add ml methylquinolin ol solut mix dilut mixtur ml distil water bring temperatur mixtur ºc add ml ammonium acet solut stir constantli adjust ph solut ammonia solut stir constantli ph meter measur ph solut solut stand minut filter aid water jet pump filter crucibl dri ºc weigh cool gram wash precipit ml distil water ºc place crucibl dry oven regul ºc dry hour remov crucibl dry oven place desicc cool room temperatur determin mass gram calcul calcul zinc content sampl percentag mass aid formula gt pic file quot quot gt mass gram sampl accord mass gram empti dry filter crucibl mass gram filter crucibl precipit repeat zinc content differ result determin parallel sampl exce absolut vii determin identif hydroxybenzenesulphon acid scope field applic method suitabl identif determin hydroxybenzenesulphon acid cosmet product aerosol face lotion definit hydroxybenzenesulphon acid content determin accord method express percentag mass anhydr zinc hydroxybenzenesulphon product iso di principl test portion concentr reduc pressur dissolv water purifi chloroform extract determin hydroxybenzenesulphon acid carri iodometr aliquot filter aqueou solut reagent reagent analyt puriti gt pic file quot quot gt chloroform butanol ol glacial acet acid potassium iodid potassium bromid sodium carbon sulphanil acid sodium nitrit potassium bromat sodium thiosulph solut aqueou solut starch aqueou solut sodium carbon aqueou solut sodium nitrit solut dithizon chloroform develop solvent butan ol glacial acet acid water part volum mix separ funnel discard lower phase pauli reagent dissolv sulphanil acid ml concentr hydrochlor acid heat dilut solut water ml cool ml solut dish ic water add stir ml cold sodium nitrit solut solut stand minut ºc temperatur solut remain stabl dai immedi sprai add ml sodium carbon solut readi prepar cellulos plate thin layer chromatographi format cm thick adsorb layer mm apparatu equip round botton flask ground glass stopper ml separ funnel ml conic flask ground glass stopper ml burett ml bulb pipett ml graduat pipett ml micro syring graduat thermomet graduat ºc water bath equip heat element dry oven ventil regul ºc usual apparatu carri thin layer chromatographi sampl prepar method identf determin hydroxybenzenesulphon acid aerosol made residu obtain releas aerosol solvent propel vapor normal pressur identif aid micro syring appli residu sampl point start line distanc cm lower edg thin layer plate place plate develop tank develop solvent develop solvent front reach cm start line remov plate bath dry ºc acet acid vapour percept sprai plate sodium carbon solut dry air cover half plate glass plate sprai uncov part dithizon solut appear purplish red spot chromatogram presenc zinc ion cover sprai half plate glass plate sprai half pauli reagent presenc hydroxybenzenesulphon acid appear yellowish brown spot rf whilst yellow spot rf chromatogram presenc hydroxybenzenesulphon acid determin weigh sampl residu ml round bottom flask evapor dryness vacuum rotari evapor water bath ºc pipett ml ml water flask dissolv evapor residu heat quantit transfer solut separ funnel extract aqueou solut ml portion chloroform extract discard chloroform phase filter aqueou solut flute filter depend expect hydroxybenzenesulphon acid content pipett ml filtrat ml conic flask dilut ml water add ml hydrochlor acid potassium bromid mix bring temperatur solut ºc aid water bath burett add potassium bromat solut ºc turn yellow add ml potassium bromat solut stopper flask stand minut water bath ºc minut solut lose colour add ml potassium bromat solut stopper flask heat minut water bath ºc record total quantiti potassium bromat solut ad cool solut room temperatur add potassium iodid mix titrat iodin form sodium thiosulph solut end titrat add drop starch solut indic record quantiti sodium thiosulph calcul calcul zinc hydroxybenzenesulphon content sampl residu percentag mass aid formula gt pic file quot quot gt total quantiti millilitr potassium bromat solut ad quantiti millilitr sodium thiosulph solut back titrat quantiti product residu analyz express milligram volum solut obtain accord express millilitr volum dissolv evapor residu analysi express millilitr note case aerosol measur result residu express term origin product purpos convers refer made rule sampl aerosol repeat content zinc hydroxybenzenesulphon differ result determin carri parallel sampl exce absolut interpret result council direct eec relat cosmet product maximum author concentr zinc hydroxybenzenesulphon face lotion deodor formul mean hydroxybenzenesulphon acid content zinc content determin multipl calcul zinc hydroxybenzenesulphon content factor yield minimum zinc content theoret present product view measur hydroxybenzenesulphon acid content zinc content measur gravimetr relev provis higher zinc chlorid zinc sulphat cosmet product iso di