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Peek Tubing Color Code You Should Know

peek tubing color code how to choose

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HPLC Peek Tubing Color Code

Peek tubing is a popular choice for HPLC systems due to its chemical resistance, durability, and flexibility. One of the key advantages of Peek tubing is the ability to use color coding to quickly and easily identify different types of tubing in a complex HPLC system.

Understanding the Color Code

Peek tubing is available in a range of colors, with each color representing a specific size or type of tubing. The most common colors and their corresponding sizes/types are:

  • Blue: 1/16″
  • Red: 1/8″
  • Green: 1/16″ with 1/32″ Id
  • Yellow: 1/8″ with 1/16″ Id
  • Orange: 1/16″ with 1/16″ Id
  • Black: 1/8″ with 1/8″ Id

It is important to note that the color coding system may vary depending on the manufacturer, so it is always a good idea to check the manufacturer’s guidelines before using Peek tubing in an HPLC system.

Benefits of Using the Color Code

Using the Peek tubing color code can provide a number of benefits, including:

  • Quick identification of tubing size/type
  • Easy troubleshooting of system issues
  • Improved organization and efficiency in the lab
  • Reduced risk of errors and contamination

Tips for Using Peek Tubing with Color Code

When using Peek tubing with color code, it is important to keep the following tips in mind:

  • Always use the correct color-coded tubing for each application
  • Store and handle tubing carefully to prevent damage or contamination
  • Label tubing and fittings to ensure proper identification
  • Use a tubing cutter to ensure clean, straight cuts

By following these tips and using the Peek tubing color code, HPLC users can improve the efficiency and accuracy of their work while minimizing the risk of errors and contamination.


Peek tubing with color code is a valuable tool for HPLC users, providing quick and easy identification of tubing size and type. By understanding the color code and following best practices for using Peek tubing, users can improve the accuracy, efficiency, and safety of their work.


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