Understanding the difference between cold-resistant and heat-resistant rubber sheets is crucial for selecting the right material for extreme temperature applications.

Properly activating silica gel plates (thin-layer chromatography or TLC plates) is a critical step to ensure sharp, well-defined spots and reproducible results. "Activation" primarily means removing absorbed water from the silica gel matrix to restore its full adsorption activity.Here is a step-by-step guide for optimal performance: