With a conical flask body to give maximum stability, these specific gravity bottles/pycnometers come complete with flask, thermometer, and cap.

The 50 and 100 mL sizes are used to obtain the specific gravity of pigments (ASTM Method of Test D153)

Reference No. ASTM Method of Test D 153.

The cap, used for all bottle sizes, has a Standard Taper 5/12 joint.