The following factors should be considered when selecting a peristaltic pump for transporting viscous liquids:
1. Tube wall thickness: Viscous liquids are generally difficult to transport, mainly because the inlet suction of the peristaltic pump is insufficient to draw them up. Therefore, it is recommended to prioritize tubing with a thicker wall, such as 2.4mm tubing.
2. Tube material: Viscous liquids have poor flowability. Therefore, tubing with good resilience will yield better results, such as silicone tubing. Rigid tubing is not recommended.
3. Tube size: Considering the above, given the same wall thickness and material, prioritize tubing with a smaller inner diameter (i.e., a smaller flow rate). This reduces the amount of liquid passing through per unit time, thus improving transport efficiency.
4. Motor type: Viscous liquids are generally heavier, requiring higher motor torque. Therefore, DC and AC motors are usually better suited to utilize the advantages of the peristaltic pump.