What is the primary purpose of sample preservation?

The primary purpose of sample preservation is to maintain the condition of a sample for accurate testing. When samples are collected for analysis, it is essential to prevent changes in their chemical, biological, or physical properties that can occur due to factors such as temperature fluctuations, exposure to light, or microbial activity. Proper preservation techniques ensure that the sample remains representative of the original source, allowing for reliable and valid test results.

Effective preservation methods may involve refrigeration, chemical additives, or other techniques that stabilize the sample composition until analysis can be performed. This is crucial for ensuring that the measurements taken reflect the actual conditions of the water source at the time of sampling, thus supporting appropriate decision-making in water quality management.