Abstract
A magnetic float densimeter capable of measuring density over a wide range of values to within 5 ppm is described. The solenoid of the system consists of a few thousand turns of fine copper wire and the float has been provided with a quickfit joint to change its weight by the addition or subtraction of mercury from inside. There is a micrometer syringe assembly to vary the concentration of the solution. The whole densimetric assembly is placed in a thermostatic air bath. A fixed temperature of the air bath is maintained by a sensitive relay system and the exact temperature of the experimental liquid at the time of measurements can be checked and monitored with the help of a specially designed thermistor probe.
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