Descriptionbr 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.br Featuresbr - Color As Shownbr -MaterialGlassbr - Size 4.00X2.90X2.90cm/1.57X1.14X1.14inbr -This is a device that accurately measures the volume of a glass or metal container.br -The known volume of the pycnometer can be used to determine the density of the powder, liquid, and particulate.br -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.br -Made of glass and has a very low heat expansion coefficient. High temperature resistant.br -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 x lab bottle