Precision Glass Burette Class A - 50ml Laboratory Graduated Chemistry Measuring Tube for Titration Experiments & Science Labs

--25mL, Glass Burette, Class A to measure cylinder head volume.    Made from precision, uniform Schott DURAN® true-bore tubing to ensure the stipulated capacity tolerances. These burets feature durable, permanent markings, fine, sharp lines, and large, easy-to-read numbers. Supplied with Teflon® stopcocks to eliminate freezing and lubricant contamination and to provide a precision fit within the barrel. All sizes are supplied with a 2mm stopcock bore plug. Meets ASTM E-287 Class A Specifications.