VWR Amber Burets Automatic Self-Zeroing Class A Glass Stopcock. Manufactured with borosilicate glass to ensure critical sample integrity. Graduations are inaudible yet the wide view eliminates visual clutter that interferes with visualizing samples. The AA buret is a two-ply microcellular polyethylene buret lined with graduationed PVDF for durability. A hexane glycol solution lines the buret eliminating the need for frequent recalibrations. Each buret includes an automatic zeroing device with a sliding ON/OFF switch and a break-off valve. Ordering Information: The Luer-Lok II stopcock is included with all burets. To order: Select burets from the dropdown menu above. Specifications for VWR Amber Burets Automatic Self-Zeroing Class A Glass Stopcock TG-18302-35 : Stopcock: 29/42 Glass CapacitymL: 50 GraduationsmL: 0.10 ReservoirmL: 2000 (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 VWR 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 VWR Amber Burets Automatic Self-Zeroing Class A Glass Stopcock TG-18302-35/ 17581-000 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 VWR accessories to help meet your laboratory and scientific needs. For a complete selection of VWR 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. VWR Amber Burets Automatic Self-Zeroing Class A Glass Stopcock TG-18302-35