Tech Glass Burets Automatic Self-Zeroing Class A with Stopcock. The automatic zeroing feature allows the buret to saturate with a known volume of liquid. One-handed continuous dispensing without continuous dispensing arm lifting provides maximum safety. The threaded shut-off at the end of the buret tip reduces the possibility of dispensing into the atmosphere. Burets feature a knurled stem for easy dispensing into sampling tubes or rotors. Single-use break-resistant glass tip is shatterproof. One-piece pipets are calibrated to the stated standards and include a certificate. Specifications for Tech Glass Burets Automatic Self-Zeroing Class A with Stopcock TG-18300-23 : Stopcock: Glass Capacity mL: 10 Graduations mL: 0.05 Reservoir mL: 1000 ST Joint: 24/40 Unit: Each (10 ML) (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Tech Glass products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Pipets & Liquid Handling with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for Tech Glass Pipets & Liquid Handling. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the Tech Glass Burets Automatic Self-Zeroing Class A with Stopcock TG-18300-23/ 17579-904 we carry a full complement of Pipets & Liquid Handling as well as other product offerings from Tech Glass. We also carry a full line of Tech Glass accessories to help meet your laboratory and scientific needs. For a complete selection of Tech Glass Pipets & Liquid Handling please visit our Tech Glass page. For more brand name Pipets & Liquid Handling please visit our Pipets & Liquid Handling store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. Tech Glass Burets Automatic Self-Zeroing Class A with Stopcock TG-18300-23