Kruss Semi-Automatic Sampler Hydrometer are hydrometers that can measure semi-automatically and clean U-tube oscillators using a peristaltic pump.

This type of hydrometer for semi-automatic sample measurement will provide greater efficiency, as well as greater safety for highly hazardous substances. It also improves the reproducibility of measurement results.

The typical line of Kruss semi-automatic hydrometers are DS7700 and DS7800 Set 3.