Graduated Test Tube with Round Bottom, Without Stopper, 20 ml, 5 pcs

The graduated test tube with round bottom is a laboratory instrument made of borosilicate glass 3.3, designed for use in medical and laboratory environments. The product has a nominal capacity of 20 ml and features clear, precise graduations with 0.5 ml divisions, allowing repeatable volumetric measurements of liquids. The transparent structure ensures optimal visibility of the contents, facilitating observation of liquid levels and internal processes. The round bottom shape is specific to laboratory applications where uniform liquid distribution and compatibility with processes such as centrifugation are required. The test tube is supplied without a stopper, being intended for open procedures where direct access to the contents is necessary. The borosilicate glass 3.3 material provides chemical and thermal resistance, allowing use under standard laboratory conditions. The product is autoclavable up to a maximum temperature of 120°C, enabling sterilization according to common laboratory procedures. The graduations are permanently marked on the body of the test tube and remain stable over time, resistant to cleaning and sterilization processes. The test tube is used in laboratories for volumetric measurement of liquids and for separation of sample components by centrifugation. Standardized dimensions allow integration with compatible laboratory racks and equipment. Main features: • Product type: graduated test tube with round bottom; • Capacity: 20 ml; • Graduations: 0.5 ml divisions; • Material: borosilicate glass 3.3; • Color: transparent; • Autoclavable up to a maximum of 120°C; • Without stopper. Dimensions: • Length: 165 mm; • Diameter: 17 mm. Applications: • Laboratory use; • Volumetric measurement of liquids; • Separation of sample components by centrifugation. Package contents: • 5 x graduated round bottom test tube, 20 ml. Certifications: • Calibration certificate.