ASPIRATOR • FREE TRANSLATOR.ORG • Definition of Aspirator

... controlled by titrations, from a stock solution of 10N NaOH, which should be very carefully standardised. If a large supply is made or the consumption is small this stock solution must be kept in an aspirator bottle to which air can only gain access after it has been dried and rendered free from CO{2}. This may be done by first leading it over H{2}SO{4} and soda lime, or soda lime alone, by some such arrangement as is shown in figure 99, which also shows a constant burette ...

— The Elements of Bacteriological Technique • John William Henry Eyre