Size — Inner and outer diameter of the tubing determine flow range, maximum pressure, and ability to handle viscous fluids well.
Temperature — Higher fluid or environmental temperatures will decrease tubing life. SoOmetimes a layered tube will alleviate these concerns.
Application — Special considerations for your application of industry such as adherence to federal or other regulations such as FDA 21 cfr 177.2600 and USP Class VI, soft or hard particulates, or high viscosities are some examples.
Pressure — Higher pressures can result in decreased pump tubing life and increased possibility of rupture. This can be mitigated with thicker tube walls in conjunction with a pump head architecture that supports those pressure ranges. Additionally, tube or barb locks to fit over tubing connectors will help reduce the risk of rupture at those points.
What to consider when choosing a drive
Flow rate— The rpm of the drive directly correlates to flow rate.
Fixed- or variable-speed— Variable-speed drives enable flow rate adjustment.
Accuracy of flow rate or dispense volume— Many drives have digital speed control circuitry for highly accurate and repeatable flow rates.