Boric Acid 5 lb 99% Pure Powder Flux Gold Silver E-Waste Metal Refining Melting

JSP Boric Acid Powder – 5 lb bag – 99.9% Pure Anhydrous H₃BO₃ – Industrial Grade Our JSP Boric Acid is a high-purity, industrial-grade anhydrous powder with a minimum purity of 99.9%, packaged in a secure 5 lb bag that is resealable for ease of use and storage. This finely milled white powder dissolves easily in water and has a wide range of practical and industrial applications — including critical use in gold and precious metal refining. 🔥 Used in Gold & Precious Metal Refining .