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Determination of oil and grease in water - Gravimetric method
Determination of oil and grease in water - Extraction with tetrachloroethylene and measurement by infrared spectrophotometry
Water analysis - Determination of the chemical oxygen demand (dicromate method)
Water analysis - Potentiometric determination of fluoride
Water analysis - Determination of iron
Water analysis - Determination of the sum of nitrite- and nitrate-nitrogen
Water analysis - Determination of ammonia-nitrogen
Water quality - Nitrate- + nitrite-nitrogen. Reduction by Devardas alloy
Water analysis - Determination of acidity and carbon dioxide
Water analysis - Stability with respect to calcium carbonate
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