GRADETECHNICAL GRADETOMBARTHITE GRADEELECTRONIC GRADEASSAY99.6%MIN99.6%MIN99.6%MINSULPHATE(AS SO4)0.08%MAX0.04%MAX0.002%MAXCHLORIDE(AS CI)0.002%MAX0.001%MAX0.0005%MAXHEAVY METAL(AS PB)0.001%MAX0.0005%MAX0.0001%MAXASH0.08%MAX0.03%MAX0.01%MAXIRON(AS PE)…