Ferro boron powder with competitive priceAppearance: Pale brown or brown-black amorphous powder Application: Used in metallurgy, electronics,etcSpecifications: Item1st grade2nd grade3rd grade4th gradeTotal Boron(B) content,%≥95≥92≥90≥88Water soluble Boron(B) content %≤0.45≤0.55≤0.6≤0.9PH value6-6.56-6.56-6.56-6.5Moisture content, %0.50.50.50.5Appearance(see with eyes)Pale brown or brown-black amorphous powder