How to Prepare 25 Metaphosphoric Acid?

Meta-phosporic acid: prepare 25% meta-phosphoric acid (w/v) by adding 25 g of meta-phosphoric acid to 75 ml of deionized water. After it is dissolved, bring the final volume to 100 ml with deionized water. This is stable indefinitely at room temperature.

How do you make Metaphosphoric acid?

The 0.52 N metaphosphoric acid is prepared as follows: Dissolve approx- imately 6 Gm. of metaphosphoric acid in water and dilute to 100 ml. Titrate a 5-ml. aliquot of this solution against 0.1 N NaOH, using phenolphthalein as in- dicator.

How do you make 3 Metaphosphoric acid?

METAPHOSPHORIC ACID BUFFER:

To prepare 3% (w/v) metaphosphoric acid plus 10 mM EDTA dissolve 3.0 g of metaphosphoric acid in 80 mL of distilled water and add 10 mL of 100 mM EDTA solution. Make to 100 mL with distilled water and store at 4°C between use.