What is the primary characteristic of non-porous surfaces?

The primary characteristic of non-porous surfaces is that they do not allow liquid to pass through. This means that these surfaces are impermeable to liquids, preventing absorption. Non-porous materials, such as glass, plastic, or certain metals, have a smooth surface design that inhibits liquid penetration, making them ideal for environments where it is important to maintain cleanliness or hygiene, such as in laboratory settings or kitchens.

This characteristic distinguishes non-porous surfaces from porous ones, which have tiny holes or pores that can absorb liquid, air, and moisture. Understanding this property is essential in various fields, including law enforcement and crime scene investigation, where the type of surface can significantly impact evidence collection and preservation.