Type and Use of Bottle-Top Dispenser
The bottle-top dispenser is the most common instrument and equipment in the experiment. It is suitable for general acid and alkali and low concentration of strong acid and alkali and salt. It enables precise, highly reproducible dispensing without wasting reagents while providing safety assurance to the operator and the laboratory environment.
Hawach bottle dispenser, the basic type is suitable for a wide range of reagents, including general acid-base salt solution, low concentration of non-oxidized strong acid strong base and polarity without non-polar organic solvent and halogenated hydrocarbon. Organic solvents such as H3PO4, HCl, H2SO4, NaOH, NaCl, and the like.
The organic type is suitable for a wide range of organic solvents and higher concentrations of strong acid solutions, such as: chlorine-containing fluorine-containing organic solvents, trifluoroacetic acid, tetrahydrofuran, peroxide, chloroform, HNO3, and the like. The maximum pressure is 500 mbar, the maximum solution viscosity is 500mm2/s, the maximum liquid density is 2.2g/cm3; the hydrofluoric acid type is only suitable for HF solution. Since the HF corrodes the glass, the piston of the dispenser is a ceramic piston, and the reagent bottle to be fitted thereto should have a maximum pressure of 500 mbar for the plastic material, a maximum solution viscosity of 500 mm2/s, and a maximum liquid density of 3.8g/cm3.
Hawach bottle dispenser, the bottle-top dispenser is fixed on the reagent bottle through the screw valve, and the closure is tight and stable, so that the solution removal process is in a closed system, avoiding the evaporation, splashing, tipping, etc. of the solution. It reduces the harm to the environment and people, and is much safer than the fully open pipetting process. In organic synthesis or petrochemical laboratories, high viscosity, high density, high volatility solvents are not uncommon, especially in the petrochemical industry.