<p>A sampling apparatus capable of introducing a large variety of samples in measuring units in turn securely and simply while avoiding excess sampling and mix of bubbles. In particular, a sampling apparatus constructed so as to introduce a liquid sample in densitometer (1) by means of peristaltic pump (3). Determining means (62) judges whether or not the sample has been introduced, and controller (6) controls the peristaltic pump in accordance with determination result.</p>
