- Liquids heavier than water
Specific gravity plain form hydrometers cover a variety of ranges and are for liquids heavier than water. Plain form hydrometers measure 165mm (6.5”) length, have 0.005 divisions and temperature of standardization is 60°F/60°F. 1234K71 has a range of 1.400 to 1.650. 1234K72 covers a range of 1.600 to 1.850. 1234K73 covers the range of 1.800 to 2.000 specific gravity.