New dispenser technology from Hirschmann laboratory apparatus with ceramic pistons. Ceramus® are a high-precision bottle-top dispenser range for almost all liquids. Environmentally-friendly reagent-saving recirculation valves. Tough ceramic pistons. Simple self-locking volume selection. When not in use pistons can be locked and delivery tubes capped to prevent loss of reagent. Fixed interval graduations give excellent reproducibility. 45mm screw neck and adapters supplied allow use with a variety of reservoir bottles. Smooth-action piston minimises operator fatigue during serial dispensing. High-grade construction materials provide long operational life. Autoclavable at 121°C. Supplied with: Ceramus® complete with thread adapters A 45mm. 3 thread adapters (A 32 / S 40 Merck bottles and A 38). 1 screw-coupled suction tube. 1 discharge tube unit complete. 1 spanner for valve. With individual serial number and single calibration report.