Sample collection is the process of gathering a small portion of material for analysis or testing. This can involve collecting samples of soil, water, air, or biological materials like blood or tissue. The goal is to obtain a representative sample that accurately reflects the characteristics of the larger population or environment. Proper techniques and tools are essential for effective sample collection. This includes using sterile containers for biological samples and specific methods for environmental samples to avoid contamination. Following established protocols ensures that the collected samples yield reliable and valid results during laboratory analysis.