Gently Clean Vintage Brass: Non-Abrasive, Non-Corrosive Eco Method
To gently clean vintage brass without compromising integrity, patina, or historical value, use a pH 6.2–6.8 solution of food-grade sodium citrate (0.8% w/v) combined with 0.15% non-ionic alkyl polyglucoside surfactant and 0.03% protease enzyme (derived from Bacillus licheniformis), applied with…