Used for grain size analysis of soils where more than 10% of the material will pass through 75 microns I. S. Sieve. Manufactured from clear transperent glass having uniform clarity throughout the upper end on which density scale is engraved. The scale range is 0. 995 to 1. 030 density (gms/cc) at 27°c. Smallest division on the scale is 0.0005. Note: hydrometer for other liquids also available.