| 5.2 < pH < 5.4 |
| 2 < pH < 4 |
| 3 < pH < 7 |
| 3 < pH < 5 |
| 3,3 < pH <4,8 |
| 3,75 < pH < 4,5 |
| 4 < pH < 5 |
| 4 < pH < 6 |
| 4,5 < pH < 5,5 |
| 4.5 < pH < 7.3 |
| 6 < pH < 7 |
| 6,5 < pH < 7,5 |
| 7 < pH < 11 |
| 7,5 < pH < 8 |
| 9 < pH < 11 |
| PH 4.5 |
| PH 5-6 |
| PH < 5,5 |
| PH < 4 |
| PH < 5 |
| PH < 5.6 |
| PH < 6 |
| PH < 7 |
| PH < 9.9 |
| PH = 3 |
| PH = 3,5 |
| PH = 4 |
| PH = 5 |
| PH = 6.5 |
| PH = 7 |
| PH > 4 |
| PH > 5 |
| PH > 6 |
| PH > 8 |
| PH > 9 |
| PH >10 |
| PH >7 |
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