Which practice is NOT a proper and safe method for storing tubing?

The practice of leaving tubing uncovered is considered unsafe and improper for several reasons. Tubing can be susceptible to contamination from dust, debris, and environmental factors when it is left exposed. This can lead to the deterioration of the material or compromise its function. Specifically, in the case of sensitive tubing that may carry fluids or gases, any contamination could impact performance or lead to system failures.

Proper methods for storing tubing include using tube racks to prevent bending or damage, sealing the ends to keep contaminants out, and storing poly tubing in a way that protects it from sunlight, which can degrade the material over time. Each of these practices contributes to maintaining the integrity and functionality of the tubing, ensuring it remains safe and effective for use when needed. Thus, leaving tubing uncovered does not meet the safety and proper storage practices necessary for high-quality maintenance.