... insoluble, %max0.1Heavy metals, as Pb, %max---------Arsenic, as As, %max----------Fluoride, as F. %max -----------Moisture, %max0.5PH1.6-2.0 USE ... NP compound fertilizer with ureic nitrogen. It is suitable for alkaline soil.Packing:Plastic knit bag , Net weight 25kg ... Quality standard in Sichuan, P.R.China. Weare anthorized for import/export of phosphate chemicals, and we currentlyservice globally the ...