Ultrasol® micro Rexene® Mn13 is a stable, water-soluble chelate designed for application by foliar fertilization and fertigation in soil or hydroponic systems. Ultrasol® micro Rexene® Mn13 prevents or combats manganese deficiency. Typical manganese (Mn) content is 13.0%, fully chelated and has a pH stability of 3 to 10.