Stage and conditions | Concentration of chemicals |
Sesitization | 12 g/l SnCl2-2H2O |
5 min, 10 min & 15 min at room temperature | 40 ml/l HCl |
Activation | 0.2 g/l PdCl2 |
5 min, 10 min & 15 min at room temperature | 2.5 m/l HCl |
Metallization | 10 g/l CuSO4-5H2O |
Multiple conditions tested | 45 g/l EDTA |
40˚C and 50˚C | 20 g/l NaCOOH |
pH 12 and pH 13 | 16 ml/l HCHO 36% |
2 min - 20 min | NaOH for adjusting pH |