Capillary tubes are ultra-thin-walled cylindrical tubing designed for high-precision conveyance of liquids or gases between containers. Key characteristics, materials, and applications are as follows:
- Core Characteristics: Ultra-thin wall thickness, small inner diameter, and exceptional fluid flow control precision—enabling accurate metering and transfer of minute fluid volumes.
- Material Options: Glass, metals (e.g., stainless steel, copper), or plastics (selected based on chemical compatibility, temperature resistance, and application scenarios).
- Application Scope:
- Laboratory settings: Analytical instruments, fluid sampling, and precision chemical experiments;
- Medical fields: Blood analysis, urine collection, and microfluidic devices for diagnostic procedures;
- Industrial processes: Cooling systems, heating equipment, refrigeration circuits, and HVAC precision fluid control.