The Hibar B series Check Valve precision dispensing pumps have proven reliability in servicing the cosmetic, food and technical industries for over 30 years. These hibar pumps are ideally suitable for low to medium viscosity applications that require small dispensing volume of up to 20cc or 0.02ml to 20ml per shot. This pump provides extremely high dispensing accuracies, typically ±1/2% or better. Precise dispensing volume adjustment and speed control via the built-in micrometers and precision needle valves. This pump has integrated check valves that can handle fluids with viscosities up to 20,000 cps, containing no solids.