Ferric alum grade one quality specifications
1.Insoluble matter, present by mass : 0.5% Max
2.Soluble iron compound(as Fe) percent by mass : 0.7% Max
3.PH (of 5% aqueous solution ) not less than : 2.5 û 2.7
4.Free Acidity % by Wt ,Max : 0.5
5.Lead (as Pb) ppm max : 15
6. Arsenic (as As2O3 ) ppm max : 5.
Alum lumps is packed in a 50kg PP Inner Lining Bags for easy to handle.
