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容量分析是通过滴定管测量标准溶液或试液的体积来计算被测物含量的方法。滴定管的质量直接影响测值的准确性。使用历史悠久的滴定管,虽有价格便宜的优点,但其滴定速度及记取读数时间长都影响测值;加之玻璃滴定管是通过管壁刻度来传递量值,视力差者读数极为不便。这种传递量值的方式无法转换为电讯号,不能和自动分析仪器连接。这是至今没有自动容量分析仪器问世之主要原因。近年来市场上出现的进口数显滴定仪和国内仿制的同类仪器都是用微机控制来提高毫升量值的准确性。这些仪器的价格昂
Volumetric analysis is the method of measuring the content of a test substance by measuring the volume of a standard solution or test solution through a buret. Burettes directly affect the quality of the measured value of the accuracy. The use of a long history of burettes, although the advantages of cheap, but the titration speed and take a long reading time affect the measured value; combined with the glass burette is passed through the wall scale to measure the amount of poor eyesight readings is extremely inconvenient. This method of delivering volume values can not be converted to electrical signals and can not be connected to automated analyzers. This is the main reason why there has been no automatic capacity analyzer so far. In recent years the market appeared on the imports of digital titrator and similar devices of the domestic imitation are using computer control to increase the accuracy of the milliliter value. These instruments are expensive