The operating principle of stainless steel capillary tubes mainly involves the following aspects:

11 Aug,2025

The operating principle of stainless steel capillary tubes mainly involves the following aspects:

  The operating principle of stainless steel capillary tubes mainly involves the following aspects:

  1. Stainless steel capillary tubes are characterized by their thin-walled structure, with an inner diameter ranging from 0.1 to 1 millimeter.

  2. Stainless steel capillary tubes have smooth inner walls, making them resistant to adsorption and blockage.

  3. The small tube diameter generates strong capillary action, enabling automatic liquid uptake and flow control.

  4. The capillary pressure generated at the pipe end can overcome a certain gravitational head or flow resistance.

  5. Capillary tubing readily establishes a continuous capillary flow, offering precise control and minimal losses.

  6. Capillary flow rate is influenced by the tube diameter, liquid viscosity, and surface tension, and can be controlled through appropriate tube‑diameter design.

  7. Capillary action can be used to transfer trace amounts of solution or to precisely control the addition of reagents during a reaction.

  8. Capillary networks can be fabricated into complex structures and applied to microfluidic analytical systems.

  9. Stainless steel capillary tubes exhibit excellent corrosion resistance and can be used for conveying corrosive liquids.

  10. It is an indispensable fundamental component in fields such as microfluidics and microreaction technologies.

  In summary, stainless steel capillary tubes leverage the capillary effect to achieve precise control of liquids and are widely used in microfluidic systems.

 

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