Liquid Nitrogen Canister Lifting Tube Explained: Easy Guide for Beginners

Liquid nitrogen tanks are widely used in scientific research, animal breeding, and medical fields. Among their key accessories, the lifting tube (also called canister) plays a crucial role. For beginners, understanding its structure and function helps ensure safe and efficient sample storage.

1. Basic Structure of the Lifting Tube
A typical lifting tube consists of a cylindrical body, a handle, an identification tag, and a perforated base. The body holds cryovials or straws, the handle allows for safe insertion and removal, the tag ensures easy sample identification, and the base design keeps specimens fully immersed in liquid nitrogen.

2. Material Characteristics
Most lifting tubes are made from stainless steel or aluminum alloy, which provide both strength and resistance to extreme low temperatures. High-end versions may include anti-corrosion coatings to extend service life.

3. Core Functions
The lifting tube enables classification, fixation, and secure storage of samples. Tanks usually accommodate multiple lifting tubes, allowing users to organize samples into groups and avoid cross-contamination. The number and diameter of lifting tubes vary depending on the tank model.

4. Practical Tips for Beginners

• Always handle lifting tubes slowly to minimize nitrogen evaporation.

• Keep operation time short to prevent temperature rise in samples.

• Regularly check identification tags and maintain a sample log for quick access.

In short, the lifting tube works like a “drawer” inside the liquid nitrogen tank, ensuring safety and efficiency in sample management. Once beginners understand its structure and purpose, operating a liquid nitrogen tank becomes much simpler.