| Bath (1) | Bath (2) | ||
| Bath composition | Concentration g/l | Bath composition | Concentration g/L |
| Lead acetate | 200 | Lead acetate | 200 |
| Thiourea | 70 | Thiourea | 70 |
| EDTA | 5 | Stannous chloride | 10 |
| Gelatin | 5 | EDTA | 5 |
|
|
| Gelatin | 5 |
| Bath (3) | Bath (4) | ||
| Bath composition | Concentration g/l | Bath composition | Concentration g/l |
| Lead nitrate | 200 | Lead nitrate | 200 |
| Thiourea | 70 | Thiourea | 70 |
| EDTA | 5 | Stannous chloride | 10 |
| Gelatin | 5 | EDTA | 5 |
|
|
| Gelatin | 5 |
| Bath (5) | Bath (6) | ||
| Bath composition | Concentration g/l | Bath composition | Concentration g/l |
| Lead oxide | 140 | Lead oxide | 140 |
| Acetic acid | 80 ml/l | Acetic acid | 80 ml/l |
| Thiourea | 70 | Thiourea | 70 |
| EDTA | 5 | Stannous chloride | 10 |
| Gelatin | 5 | EDTA | 5 |
|
|
| Gelatin | 5 |