Each system consists of a 50ml acrylic burette, a 500 ml bottle with holder in low density polyethylene and a 0.5 meter length of PVC tubing connected to both burette and bottle. The tip on the end of the tube, inside the burette, can be positioned to zero manually. The burette has crystal-clear acrylic body with screen printed black graduations. Suitable for general use in educational, research or industrial environment. Unaffected by most diluted aqueous solutions (except ammonia and HF) but unsuitable for ethanol or organic solvents. Supplied without burette clamp and retort stand.