Skin debris | Skin elements | Mineral overload | Mineral and metallic particles at the surface | ||||
Numbers | Organic matter | Sulphur | Chlorine | Sodium | Clays | Calcium carbonate | |
P1 | + | + | + | + | +++ | + | No |
P2 | + | + | + | ? | ++ | +++ | No |
P3 | + | + | + | + | + | + | Yes |