We are offering humic acid as such is not water soluble, but it,s salts such as potassium, humate, ammonium humate are soluble hence converted and used in formulations (ec,) liquid formulations -12% is most popular as it is used for soil application are incorporated in drip irrigation or foliar application. Humic acid is mainiy applied to root zone in soil. In order to obtain best results mix humic acid in 1000-2000 liters of water and distribute over 1 acre land.compny manufactured on four paking 100 ml,250 ml,500 ml,1000 ml.in market according to custumer demand.