Metal Finishing & Anodizing Testing

Aluminum blue 2LW, 20 g/l, pH 5.0 ± 0.5, ASTM B-136-77

Ammonium chloride-hydroxide buffer solution, (pH=9.5), NH₄Cl: 40 g/l and NH₄OH: 250 ml/l

Ammonium chloride-hydroxide buffer solution, NH₄Cl: 53 g/l and NH₄OH: 67 ml/l

Chromic acid solution, 10.0% w/v, HM

Chromic acid solution, 5.0% w/v, HM

Fluoride standard #1, "100 ppm as F", a 1:1 volumetric mixture of 100 ppm fluoride standard and sodium acetate buffer, pH 5.4, for the metal-finishing industry

Fluoride standard #2, "1000 ppm as F", a 1:1 volumetric mixture of 100 ppm fluoride standard and sodium acetate buffer, pH 5.4, for the metal-finishing industry

Murexide indicator mixture, 1% with NaCl

Murexide tablets, 100 per bottle

Nitric acid, 0.1 N volumetric solution, HM

Nitric acid, 40% w/w as HNO₃, HM

Phosphoric-chromic acid stripping solution, ASTM for coating weights, HM

Potassium fluoride, 20% w/v, HM

Potassium fluoride, 25% w/v, HM

Potassium fluoride, 50% w/v, HM

Sodium acetate buffer, pH 5.4, for metal finishing fluoride tests