Which method is described as versatile for sterilisation?

• A. Glass bead sterilisation
• B. Dry heat
• C. UV Sterilisation
• D. Autoclave

Answer: (C)

The idea being tested is how a sterilisation method can be versatile across different situations. UV sterilisation stands out because it can be used in a variety of contexts without heat, moisture, or chemicals. UV-C light damages the DNA or RNA of microorganisms, rendering them unable to reproduce, which makes it effective for disinfecting surfaces, air, and some water supplies. Its non-thermal, residue-free nature means it can be used on heat-sensitive equipment and in settings where liquids or steam aren’t practical. You can deploy compact, portable units for quick surface disinfection or use room- or cabinet-sized systems for broader sterilisation tasks, all without introducing moisture or residues that could affect delicate items.

But it’s important to recognize its limits: UV sterilisation relies on direct exposure, so shadows and opaque objects shield microbes, reducing effectiveness. It also may not adequately inactivate all spores or heavily soiled materials, and proper dosing and safety precautions are essential to protect people from UV exposure. In capable, right-sized applications, UV sterilisation offers flexible options that other methods can’t, especially when you need a fast, non-damaging approach to sterilisation.