Sample Preservation Techniques

Sample preservation techniques help keep biological or chemical samples intact and unchanged for accurate analysis later. Common methods include cooling samples with ice or refrigeration to slow down decomposition, freezing at very low temperatures to halt biological activity, and adding preservatives like alcohol or chemicals that prevent decay or bacterial growth. Proper sealing in airtight containers prevents contamination and dehydration. These techniques ensure that the sample’s original properties are maintained, minimizing changes until testing or observation can occur. Using the right preservation method depends on the type of sample and the analysis planned.