High Class dispensing. All components which determine volume are manufactured of ceramics and precise calibrated glass. The dispensing piston made of high-purity aluminium oxide ceramic and the DURAN® glass cylinder guarantee a maximum level of chemical and thermal resistance. The high-quality materials in all parts conveying medium enable use within a temperature range from 4°C to 50°C. The complete unit can be steam sterilised at 121°C without dismantling. Absolute reproducibility. Thanks to its toothed graduated plunger recalibration is unnecessary. Equipped with a unique recirculation system. Ergonomic design. Rotates 360º on bottle. Reference 6709342300 corresponds to HF model, specially conceived for hydrofluoric acid dispensing. Can be adapted directly to flasks with GL45 mouth and is provided with three adaptors (GL32, GL38 and S40).