commiss regul eec juli analyt method determin dry weight content tomato juic purpos note chapter common custom tariff commiss european commun regard treati establish european econom commun regard council regul eec januari measur uniform applic nomenclatur common custom tariff amend act access greec articl thereof order ensur uniform applic nomenclatur common custom tariff provis made classif tomato juic note chapter common custom tariff annex council regul eec amend regul eec classif tomato juic depend dry weight content adopt analyt method determin dry weight content basi studi experi method annex regul found ensur result measur provid regul accord opinion committe common custom tariff nomenclatur adopt regul articl purpos note chapter common custom tariff dry weight content tomato juic determin method set annex articl regul enter forc dai public offici journal european commun regul bind entireti directli applic member state brussel juli commiss karl heinz narj member commiss oj oj oj annex purpos field applic method determin dry weight content tomato juic definit dry weight content tomato juic defin residu obtain dry sampl accord method principl loss mass dry determin mix sampl diatomac earth similar materi pre dry mixtur dry vacuum dry oven hour approxim kpa mbar reagent diatomac earth similar materi distil water apparatu dry applianc vacuum dry oven automat temperatur set thermomet vacuum gaug dry oven design differ temperatur locat slide trai exce dry oven ventil devic automat temperatur set thermomet design dry oven ensur rapid circul air insid suffici exchang air achiev rapid evacu moistur water bath air dry instal consist dry column pack freshli activ silica gel equival desicc moistur indic dry column connect seri ga washbottl concentr sulphur acid turn connect dry purpos air intak apertur dry oven empti washbottl act safeti vessel instal upstream downstream washbottl concentr sulphur acid vacuum pump mean vacuum kpa mbar maintain dry oven flat bottom corros resist metal dish diamet mm height mm fit tightli fit lid glass rod desicc freshli activ silica gel equival desicc moistur indic analyt balanc procedur weigh diatomac earth dish transfer open dish dry oven lid dry minut put lid dish transfer desicc cool weigh accur weigh accur sampl dish weigh quickli order prevent loss moistur mix sampl materi diatomac earth glass rod distribut mixtur evenli dish facilit distribut mixtur dilut distil water rins glass rod distil water method dry test sampl appar dryness place dish test sampl boil water bath transfer dish test sampl dry oven place dish test sampl vacuum dry oven reduc pressur kpa mbar place dish partial dri test sampl vacuum dry oven reduc pressur kpa mbar air bubbl concentr sulphur acid test sampl dry hour close vacuum line admit dry air slowli atmospher pressur reach transfer close dish dri test sampl immedi desicc weigh ambient temperatur reach present result formula method calcul result percentag dry weight content calcul mean equat dry weight content origin mass test sampl mass dish diatomac earth lid dri residu mass dish diatomac earth lid