Which of the following is NOT considered a cleaning agent?

Glutaraldehyde is primarily used as a disinfectant and sterilizing agent, not as a cleaning agent. While it does possess some cleaning properties due to its ability to kill bacteria and viruses, its main function is to inactivate microbial life on medical instruments and equipment. It is often utilized in high-level disinfection processes, particularly for heat-sensitive medical devices.

In contrast, the other options are specifically designed for cleaning purposes. High alkaline detergents are effective in breaking down organic matter and are commonly used in cleaning surgical instruments. Amylase enzyme-based detergents help to digest starches and other organic materials, making them ideal for cleaning purposes. Organic acid detergents are effective in removing lime deposits, rust, and other inorganic materials from surfaces.

Thus, glutaraldehyde stands out as not being a traditional cleaning agent but rather a disinfectant, supporting why this answer is correct.