seaweed extract essence foliar fertilizer PH=6-10, specific gravity: 1.13-1. ... organic matter 8% ASD-002 Seaweed Extract Essence Fertilizer Liquid Product character:Black brown liquid, water soluble, PH=6-10, specific gravity ... soluble alginic acid≥30g/L, organic matter≥8%, , N≥0.5%,, K2O≥6%, I≥300ppm, much secondary element and ... to buyer’s option. organic seaweed extract essence foliar Fertilizer