摘要 |
An apparatus and method for measuring a range of small volumes of fluids to a high degree of precision, said apparatus including: a) a single reaction chamber ( 20 ); b) a piston ( 30 ) operable within said chamber to selectively and precisely vary the internal volume of said chamber; c) a first inlet ( 41 ) to said chamber in communication with one or more fluid sources of which a portion of a first fluid of said one or more fluids is adapted to be drawn into said chamber, d) at least one further inlet ( 43 ) including a second inlet to said chamber in communication with one or more fluid sources of which a portion of a second fluid of said one or more fluids is adapted to be drawn into said chamber, and e) a sealable outlet ( 45 ), wherein said piston is adapted to progressive draw said portion of a second fluid into said chamber until either accurate metering of a volume of said first or second portion of fluid is achieved or a reaction involving said first and second portions in said chamber (such as a titration reaction) is completed.
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