Buffer Cleaner
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GENERAL TIPS 1 :::--- A small amount of the sample is acidified with Concentrated Nitric Acid to which a little ammonium molybdate is added. The presence of Phosphate Ions is indicated by the formation of a bright yellow layer.
GENERAL TIPS 2 :::--- Standard Phosphorus Solution, 0.1 mg/mL as Phosphorus: Dissolve exactly 0.4395 g (Note 5) of reagent grade potassium dihydrogen phosphate (KH2PO4) in 500 mL of purified water in a 1 L volumetric flask; dilute to volume with purified water and mix thoroughly. Standard Solution: 2 µg Phosphorus per mL:
OTHERWISE :
Standard phosphate solutions: 22.068 mg of anhydrous KH2PO4 was dissolved in distilled water and diluted to 100 mL. Thus, 1mL = 50.3µg PO4 3 --P.

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