IGNOU BCHET 141 2026 - Give the details of the preservation techniques used for wat

Question

Give the details of the preservation techniques used for water samples.

10 Jan 2026

Answer :

Word Count : 277

Proper preservation of water samples is essential to ensure that the chemical, physical, and biological characteristics at the time of sampling are maintained until analysis. Preservation techniques depend on the nature of the analyte and the intended analytical method. The most common approach is temperature control; water samples are generally stored at low temperatures, around 4 °C, to slow down biological activity and chemical reactions. Refrigeration is particularly effective for preserving nutrients, organic matter, and general water quality

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