hw® hydrometer with thermometer
The hw® hydrometer is an individually checked precision instrument for measuring seawater density. When assessing salinity, take the water temperature and calibration information into account.
- Length: 230 mm
- Diameter: 23 mm
- Packaging: plastic box
- Scale divisions: 0.002
- Calibration: 25/4 °C
- Range from 1.020 to 1.026 highlighted in colour
- Temperature range: 10–40 °C / 50–100 °F
- Temperature deviation in the 20–30 °C range: maximum 0.25 °C
Fill a preferably transparent measuring vessel at least 22 cm high with the seawater to be tested. Carefully place the hw® hydrometer in the vessel. For an accurate reading, it must float freely without touching the sides.
Read the density on the upper scale at the lower meniscus: the lower edge of the curved water surface at the scale. Take the water temperature and the calibration and temperature correction information into account.
After use, rinse the hydrometer with fresh water and dry it carefully with a clean, dry cloth. Store it in the protective sleeve supplied.
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