Universal bottle top dispenser with an indestructible ceramic piston and a user-friendly reagent recirculation system. Highly precise, no abrasion, almost no thermal expansion. No loss of reagent, due to the user-friendly recirculation system. Micro-step volume adjustment, calibrated to last for the device's lifetime. Individual quality certificate, conformity certified. Fixed and variable volumes from 0.2 mL up to 60 mL. Ergonomically ideal handle. Very good chemical resistance of the parts in the liquid's pathway. The closure cap slides back into its storage position. Stable discharge tubing. The device is freely rotatable on the bottle. Simple valve replacement. Luer-Lock connection for attaching a filter or a dry tube. Unit can be used on bottles with thread size 45 or, with supplied adapters on thread sizes 32, 38, or 40. Units up to 10mL capacity are supplied with a 32 oz. Amber glass bottle
