| Document Name | Available Languages |
| Calculation of sludge age and sludge volume index | Sverige England |
| Spreadsheet for statistical adjustment of calibration | Sverige England |
Other documentation, drawings, etc. can be found in our document archive.
| Document Name | Available Languages |
| Calculation of sludge age and sludge volume index | Sverige England |
| Spreadsheet for statistical adjustment of calibration | Sverige England |
Other documentation, drawings, etc. can be found in our document archive.