1. ProfessionalUsed for quantitative droplet measurement, which can accurately add droplets to containers for volume analysis, titration, dilution and other experimental operations. An instrument used for routine chemical analysis operations in laboratory. Very convenient. 2. Large Capacity DesignThe 0 25ml capacity range is available to ensure a safe, smooth and accurate dispensing experience with the bottle dispenser. It is suitable for most laboratory reagent bottles to meet the experimental needs of different users. 3. Adopts double valve design to ensure waste prevention and drip prevention, with small operating force and easy plunger movement; when dispenser is not used for a short period of time, discharge pipe protective cover can prevent leakage. 4. Wide ApplicationSuitable for hydrofluoric acid, strong acid, fuming acid, alkali, solvent and extremely dangerous liquids, resistant to most acids, alkalis, organic solvents, organic and inorganic; avoid the smell of fuming acid/foul smelling chemical liquids.