Fertilizer additive, pH adjuster, nutrient chelator, flushing agent, foliar spray, organic biostimulant. Crop management tool allowed under the National Organic Program; non-synthetic allowed for use in crop production. "Consider Using Citric Acid" article in Maximum Yield by Donald Lester Citric Acid Anhydrous is manufactured by a submerged fermentation process from a glucose and/or sucrose carbohydrate substrate. Citric Acid is produced in accordance with current Good Manufacturing Practices (GMP’s) under a comprehensive HACCP (Hazard Analysis and Critical Control Points) program. Feed grade, non-GMO Project verified. Appearance: colorless or white color crystal power. Free flowing.