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import en marketing van methylrood, laboratoriumapparatuur, kleurstoffen en indicatoren van de kwaliteitscontrole.
equipment for the control of the quality, as well as the repair, the maintenance and service of calibration.
bij colorimetrische eindpuntsbepaling moeten de methylrood- en broomkresolgroenindicator aan de boorzuuroplossingen worden toegevoegd.
when colorimetric end-point detection is applied, methyl red and bromocresol indicators must be added to the boric acid solutions.
los op 0,1 g methylrood in 50 ml ethanol 95 %, vul aan met water tot 100 ml en filtreer zo nodig.
dissolve 0 71 g of methyl red in 50 ml of 95 % ethanol and make up to 100 ml with water. filter if necessary.
oplossing a : los 1 g methylrood op in 37 ml natriumhydroxyde-oplossing 0,1 n en vul aan met water tot 1 liter.
solution a : dissolve 1 g of methyl red in 37 ml of 0 71 n sodium hydroxide solution and make up to one litre with water.
verenig de twee extracten met de heptaanfase en was enkele malen met telkens 20 ml water tot zuurvrij ( indicator : methylrood ) .
combine the heptane phase and the two extracts and wash with 20 ml portions of wash until the acidity disappears (methyl red indicator).
indicatoroplossing (tashiro-indicatormengsel) 2 g methylrood en 1 g methyleenblauw wordt opgelost in 1 000 ml 95 % ethanol.
indicator solution (tashiro mixed indicator) 2 g methyl - red and 1 g methylene - blue are dissolved in 1 000 ml 95 % ethanol.
oplossingen a ) mengindicator : los 0,04 g methyloranje op in 20 ml gedestilleerd water en 0,2 g broomkresolgroen en 0,04 g methylrood in 80 ml ethanol .
place 2 to 3 ml of hydrogen peroxide at 0.3 volume ( previously neutralized with 0.01 n sodium hydroxide ) and two drops of indicator reagent into the bubbler b .
oplossing a: los 1 g methylrood op in 37 ml natriumhydroxideoplossing 0,1 mol/l en vul aan met water tot 1 liter.
solution a: dissolve 1 g of methyl red in 37 ml of 0.1 mol/l sodium hydroxide solution and make up to one litre with water.