Silica gel plates are widely used in thin-layer chromatography (TLC) for separating and analyzing chemical compounds. They serve as the stationary phase, allowing for the separation of mixtures based on polarity and affinity. In pharmaceuticals, they are essential for quality control, ensuring the purity of drugs and identifying active ingredients. In research, they help in isolating and identifying compounds in complex mixtures. The plates are also used in forensic science to analyze substances like drugs or toxins. Additionally, they play a role in environmental testing to detect pollutants in water or soil samples. Their versatility, ease of use, and cost-effectiveness make them a staple in laboratories across various fields.