-Sulphur content 98,00 % min      

-Oil content 0,80 % – 1,20 %      

-Ashes 0,40 % max      

-Loss on weight at 100°C 0,20 % max      

-Mineral acidity (as % H2SO4) 0,10 % max    

-Residue at 44 µm * 20,00 % max    

-Residue at 90 µm * 2,00 % max 
-Residue at 180 µm * 0,01 % max