POV ( peroxide value) test for Ghee / oil sample

 Peroxide value test for Ghee/oil sample

Chemical use.

Acetic acid 60% + chloroform 40%

KI (potassium iodide) saturated solution

Starch indicator

Method

| Firstly 5gm sample of oil / ghee in Titration flask

|Then add 25 ml acetic acid+ chloroform solution

|Then add 0.5ml saturated kI solution & shake well

|Then put in a dark place for 1 mint or heat for below 20 c°

|Then add 25 ml distilled water 

|Then add 1 ml Starch solution 

|Then titrated against 0.01N sodium thiosulfate solution

Results

Colourless reading attain

Formula.

V1-v2=x

Pov mili e.q/ kg (x×2)