Nutrition Certifications Van Iperen WS NPKs are top excellent blends made from the purest Uncooked materials, with limited caking sensitivity and with high amount EDTA-chelated micro-nutrients for fertigation or foliar software.???? ???? ??: ??????? ?? ??? ??? ?? ????? ???? ???? ???? ?? ???? ???? ??? ???? ?????? ?? ????? ?? ??? ????? ?? ? ?????????