Product Dose

Procedure For Test 

Measure a clear 50-ml sample of water in the graduated cylinder and transfer to the casserole.  Add 4 drops of methyl orange indicator.  Titrate from the buret with standard 0.02N sodium carbonate until, the color changes from pink to yellow.  Record the volume (ml) of sodium carbonate required.  Calculation of Results

 

FORMULA :       ppm FMA CaCO3 =   Ml 0.02N sodium carbonate   x     1000  /   ml sample                            

                            Using a 50 ml sample, the free mineral acidity in ppm CaCO3 is equal to ml of 0.02N sodium carbonate multiplied by 20. 
FMA : Free mineral acidity