99.9% Pure Boric Acid Powder for Commercial Fertigation, Foliar & Hydroponic Use

Optibor TP Boric Acid Powder delivers 17.5% boron (B) in a 99.9% pure, technical-grade orthoboric acid (H₃BO₃). The 55 lb bag is designed for commercial greenhouse operations, large fertigation programs, and high-volume hydroponic facilities. Boric acid is one of the most soluble and readily available forms of boron for plant nutrition — dissolving cleanly with no residue for precise nutrient solution preparation.

Boron is essential for cell wall integrity, pollen tube germination, sugar transport, and calcium uptake. Deficiency is common in sandy, leached, or high-pH soils and shows up quickly in new growth. At commercial scale, boric acid’s high solubility and consistent purity make it the preferred boron source for injection systems and stock tank preparation.

Guaranteed Analysis

• Boron (B): 17.5%
• Formula: H₃BO₃ — Orthoboric Acid
• Purity: 99.9% min
• Target range in nutrient solution: 0.1–0.5 ppm B

Application Rates

• Hydroponic stock concentrate: Dissolve 0.3 g per liter of pure water; apply at 5 mL/liter (19 mL/gallon) to achieve approximately 0.25 ppm B in working solution
• Fertigation & foliar: Apply per label recommendations; consult a certified crop advisor or agronomist for crop-specific rates

Key Features

• 99.9% pure boric acid — technical grade; consistent, reliable boron delivery at commercial scale
• 17.5% boron — highly soluble orthoboric acid form; dissolves completely with no residue
• Versatile — suitable for fertigation injection, foliar spray, and hydroponic nutrient solutions
• 55 lb bag — commercial scale; cost-effective for large greenhouse and fertigation operations

Use in accordance with recommendations of a qualified individual or institution. See SDS for safety handling information.