Zippette variable-volume bottle-top dispensers are suitable for use with most laboratory acids, alkalis, organic solvents and scintillation fluids, with the exception of hydrofluoric acid.

Variable-volume bottle-top dispensers feature an anti-drip safety valve, a fine adjustment mechanism for greater reproducibility, an easy-to-adjust calibration mechanism, and a right-angled delivery spout for accurate dispensing

The PTFE piston is easily removable for cleaning and smooth action. The borosilicate glass barrel is protected with a transparent polypropylene sleeve and can be disassembled from the pedestal for thorough cleaning. The chemical-resistant liquid pathway allows dispensing of a wide range of liquids. Dispensers fit bottles with 30 mm necks. Fully autoclavable at 121°C.

Dispensers have an accurate delivery within ±0.3% (on maximum delivery) and a precision within 0.1%. The precision valve mechanism ensures easy priming and minimum waste with no leakage back into the reservoir.