choline chloride 75% ItemAqua index Content of choline chloride: % ≥75 PH6.0-8.0 Content of total free ammonia(count by CH3 3N), % ≤ 300ppm ash content, % ≤ 0.20 Content of heavy metal(count by pb), % ≤ 0.002The content of choline chloride(powder) count by butt