Closed System, Self-Zeroing Glass Burettes Avoid Contamination
Self-Zeroing Glass Burettes have delivery ends fitted into plastic push-button stopcocks to provide drop-by-drop delivery. A small screw clamp presets drop speed for repeat titration. Burettes are glass with easy-to-read blue graduations against a white background. A polyethylene filling tube extends from the top of the burette into the bottle reservoir. Bottle, screw cap and round base are made of polyethylene. Graduation accuracy: Class B.