How do you prepare 0.1 n edta preparation?

To prepare a 0.1 N EDTA solution, first calculate the amount of disodium EDTA (C10H14N2Na2O8 · 2H2O) needed. For a 1-liter solution, dissolve approximately 37.22 grams of disodium EDTA in distilled water. Adjust the pH to 7.0-7.5 using sodium hydroxide if necessary, and then make up the final volume to 1 liter with distilled water. Mix thoroughly to ensure complete dissolution.