Determination of Biochemical Oxygen Demand (BOD5)

2. Potassium Iodide Solution: Dissolve 10 grams KI in a 100 ml volumetric flask. Bring to volume with distilled water. 3. Sodium Sulfite Solution, 0.0250N: Dissolve 1.575 grams anhydrous NA2SO3 in a 1,000 ml volumetric flask. Bring to volume with distilled water. NOTE: This solution is not stable and must be prepared daily. 4. ................
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