SULPHUR CONTENT 99.7% W/W MIN ON DRY BASIS ASH CONTENT 0.05% w/w max (500 ppm) COLOUR Bright Yellow ORGANICS 0.03% w/w max (300ppm) ACIDITY 0.02% w/w max (200ppm) VOLATILE MATTER 0.03% w/w max (300ppm) MOISTURE 0.5% / 3.0% w/w max SELENIUM 0.01 ppm Max TELLURIUM 0.01 ppm Max ARSENIC Nil LEAD Nil CHLORIDE 5 ppm Max FLUORIDE Nil