The Labmax dispenser has a unique direct displacement Teflon* resin piston system which is chemical-resistant and provides safe, smooth dispensing of virtually any reagent (except hydrofluoric acid). The unit is designed with a unique air purging system that prevents loss of reagents and eliminates dripping or splashing of media. An exclusive reagent guard valve prohibits accidental discharge and eliminates the need for capping the discharge tube when the dispenser is not in use. The volume adjustment knob allows quick and easy setting, and locks the volume into place. The discharge tube can be turned on a 360° swivel allowing convenient dispensing and safe positioning over the reagent label. The dispenser easily disassembles for cleaning. Automatic calibration eliminates readjustment. Fully autoclavable to 121°C.