Upload NowIn this article we will discuss about the estimation of phosphorus and potassium for analysing soil. Estimation of Available Phosphorus: i. Olson’s Method: Principle: Available phosphorus is extracted from soil with N/2 sodium bicarbonate with pH adjusted to 8.5. By adding molybdate and stannous chloride solution a blue colour develops and this is read on […]
Estimation of Phosphorus and Potassium | Soil Analysis
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Chemical Oxygen Demand (COD) in Water | Biotechnology
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In this article we will discuss about the principle, requirements and procedure for determination of Chemical Oxygen Demand (COD) in water. Since there are more amounts of various chemically oxidisable organic substances entering water systems, BOD alone does not give a clear picture of organic matter content of water. Principle: A known volume of potassium […]
Top 10 Techniques of Chromatography | Biotechnology
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The following points highlight the top ten techniques of chromatography. The techniques are: 1. Adsorption Chromatography 2. Paper Chromatography 3. Two Dimensional Chromatography 4. Circular Paper Chromatography 5. Ion Exchange Chromatography 6. Thin Layer Chromatography 7. Gas Liquid Chromatography 8. Column Chromatography 9. Affinity Chromatography 10. High Performance Liquid Chromatography. Technique # 1. Adsorption Chromatography: […]