Why do we choose peristaltic pump for aseptic filling?

General metering charging methods for aseptic irrigation include time pressure piston pump charging and Peristaltic Pump charging. However, with the popularity of biopharmaceuticals and the maturity of disposable packaging material technology, the peristaltic pump is increasingly applied to mass production. Compared with a piston pump, a peristaltic pump has the following differences: If you compare a pump with the same rotor diameter, you get a pump with a bigger pillow, and the rotor moves a larger volume of fluid per turn, but it also produces a larger pulsation. This is similar to what happened in the valve. If you produce a pump with a smaller pillow, the rotor moves a smaller volume of fluid per turn, and it forms a smaller pillow in rapid succession Make fluid flow relatively smooth this works similarly to gear pumps - sterile Angle Notes: Piston pumps consist of multiple mechanical parts that come into contact with products such as sealed plunger pump valves (if required) these parts need to be cleaned and sterilized before assembly and use - Functional notes: Peristaltic pumps can provide a wide range of charging capacity from 0.1 ml to 500 ml of course depending on different hose diameters when converting charging capacity, there is no need to buy and stock pumps compatible with other loading capacities, just replace the hose with the appropriate diameter - Product suitability considerations: 1. There is a gap between the piston and the pump body of the piston pump, and the Shear force generated when the piston pump compresses the high-speed flow fluid through the small aperture path may have a potential impact on some Shear force-sensitive biological products 2. The product viscosity is high, the piston pump in the piston extrusion liquid, the inner cavity is easy to produce large pressure, micro charging, this pressure is easy to affect the charging accuracy, compared with the peristaltic pump, charging pressure is relatively low 3. Of course, the hose has a great influence on the overall performance of the peristaltic pump. Soft tube wall thickness uniform durability fatigue or material memory are important reference factors that need to be paid attention to when choosing.

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