ESS Laboratory provides the following Wet Chemistry tests:
| PARAMETER | METHOD |
|---|---|
| Acidity | 2310B |
| Alkalinity | 2320B |
| Ammonia Nitrogen | 350.1 |
| Biochemical Oxygen Demand (BOD) | 5210B |
| Chemical Oxygen Demand | 410.4 |
| Chloride | 4500Cl-E/300.0/9056/9250 |
| Chlorine, Residual | 4500Cl D,G |
| Chromium, Hexavalent - liquid | 3500-Cr D |
| Chromium, Hexavalent - solid | 7196 |
| Conductivity (Specific Conductance) | 120.1/2510B |
| Cyanide, Total | 4500CN C,E/9014 |
| Cyanide, Free | 4500CN I |
| Cyanide, Amenable | 4500CN C,E |
| Cyanide, PAC | MADEP |
| Dissolved Oxygen | 4500 O C |
| Fluoride | 300.0 |
| Formaldehyde | 8315 |
| Hardness, Total | 2340B |
| Nitrogen, Nitrate | 353.2 |
| Nitrogen, Nitrite | 353.2 |
| Nitrogen, Nitrate/Nitrite | 353.2 |
| Oil and Grease - hexane extraction | 1664 |
| pH | 150.1/4500 H+ B/9040/9041/9045 |
| Phenols | 420.1 |
| Phosphate, Dissolved | 365.3/365.1 |
| Phosphate, ortho | 365.3/365.1 |
| Phosphorus, total | 365.3/365.1 |
| Salinity | 2520B |
| Silica | HACH |
| Solids: Dissolved (TDS) | 2540 C |
| Solids: Suspended (TSS) | 2540 D |
| Solids: Total (TS) | 2540 B |
| Solids: Volatile (TVS) | 160.4 |
| Settable Matter | 2540 F |
| Specific Gravity | 2710 F |
| Sulfate | 4500 SO4 E/300.0/9038/9056 |
| Sulfide - liquid | 4500 S2 D/HACH |
| Sulfide - solid | 9030 |
| Surfactant (MBAS) | 5540 C |
| Total Kjeldahl Nitrogen | 351.2/ 4500NH3 D |
| Total Organic Carbon (TOC) - liquid | 5310/9060 |
| Turbidity | 180.1 |