Analyses and Methods
ETS is certified by NC DENR for the following analyses and methods.
| Analysis | Method |
|---|---|
| Alkalinity | SM 2320 B |
| Ammonia Nitrogen | SM 4500 NH3 D |
| Biological Oxygen Demand, 5-day | SM 5210 B |
| Carbonaceous Biological Oxygen Demand, 5-day | SM 5210 B |
| Chemical Oxygen Demand | HACH 8000 |
| Chloride | SM 4500 Cl- C |
| Conductivity | SM 2510 B |
| Dissolved Oxygen | SM 4500-O G |
| Fecal Coliform by Membrane Filtration | SM 9222 D |
| Fecal Coliform by Multiple Tube Fermentation | SM 9221 C E |
| Hardness | SM 2340 C |
| Paint Filter Liquids | SW846 Method 9095B |
| pH, Liquid | SM 4500-H+ B |
| pH, Solid | SW846 Methods 9045C, 9045D |
| Salinity | SM 2520 B |
| Solids, Total Suspended | SM 2540 D |
| Solids, Total Dissolved | SM 2540 C |
| Solids, Total Volatile Suspended | SM 2540 E |
| Solids, Settleable | SM 2540 F |
| Solids, Percent and Percent Moisture | SM 2540 G |
| Sulfate, Total | SM 4500-SO42- B |
| Temperature | SM 2550 B |
| Total Residual Chlorine | ORION 97-70 |
| Total Coliform by Multiple Tube Fermentation | SM 9221 B |
| Turbidity | SM 2130 B |
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SM = Standard Methods for the Examination of Water and Wastewater, 23rd Edition, 2024. |
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