The glass bottle is suitable for small sample testing. Made of glass, corrosion-resistant and high-temperature resistant. Accurate measurement, suitable for density, specific gravity and other experiments. Tight sealing, avoiding liquid leakage. Easy to use, suitable for daily use in the laboratory. Features -Color:Transparent -Material:Glass -Size:3.70X2.50X2.50cm/1.45X0.98X0.98in -This is a device that accurately measures the volume of a glass or metal container. -The known volume of the pycnometer can be used to determine the density of the powder, liquid, and particulate. -It is suitable for measuring the liquid density in industrial, laboratory, school, agricultural grain and other units, and analyzing the purity, volatile energy or content of the substance. -Made of glass and has a very low heat expansion coefficient. High temperature resistant. -Before use, the temperature thermometer, empty bottle weight and water weight should be strictly calibrated according to the requirements, and the requirements can be used. Package list: 1 bottle