Lab density bottle/pycnometer in Kenya

Here's a description of a typical lab-density bottle: Material: Made of borosilicate glass, which is durable, chemically resistant, and has a low coefficient of thermal expansion. Design: Small cylindrical or bulb-shaped bottle with a ground glass stopper or cap for sealing. Capacity: Specifically designed to hold 50ml and 25ml of liquid or solid sample for density measurement. Usage: Used in density determination experiments where the mass and volume of a substance are measured to calculate its density. Calibration: Before use, the density bottle is cleaned, dried, and calibrated to ensure accurate measurements. The calibration involves determining the exact mass of the empty bottle and then filling it with a known volume of liquid or solid of known density to determine its volume. Handling: Handled carefully to avoid introducing air bubbles or contaminants that could affect the density measurement. Cleaning: Cleaned with laboratory-grade cleaning solutions and rinsed thoroughly to remove residues before each use. Storage: Stored in a designated area to prevent breakage and ensure cleanliness when not in use. Lab density bottles are precise instruments used in scientific research, quality control, and educational settings to determine the density of substances accurately.