Parameter | Unit | Analytical method/instrument |
Temperature pH Colour Turbidity | ˚C - PtCo NTU | Thermometer pH meter Spectrophotometry Spectrophotometry |
Dissolved oxygen (DO) | mg·L−1 | Multi-meter |
Electrical conductivity | µs·cm−1 | Multi-meter |
Total alkalinity Total hardness Total suspended solids | mg·L−1 mg·L−1 mg·L−1 | Titrimetry EDTA titrimetry Gravimetric method |
Total dissolved solids Sodium | Mg·L−1 ppm | Multi-meter Flame photometry |
Chloride Magnesium Calcium Sulphates Nitrites | ppm mg·L−1 mg·L−1 mg·L−1 mg·L−1 | Mercurimetric titrimetry Titrimetry Titrimetry Atomic absorption spectrophotometry Atomic absorption spectrophotometry |
Orthophosphate (PO43−-P) | mg·L−1 | Ammonium molybdate ascorbic acid reduction method |
Nitrate (NO3-N) | mg·L−1 | Spectrophotometry |
Ammonia (NH3-N) | mg·L−1 | Spectrophotometry |
Total hardness | mg·L−1 | Titrimetry |
Fluoride | mg·L−1 | Spectrophotometry |
Total iron Heavy metals (Zn, Mn, Cu, Cd, Pb and Cr) Salmonella Faecal coliforms | mg·L−1 ppm CFU CFU | Spectrophotometry Atomic absorption spectrophotometry Membrane filtration technique Membrane filtration technique |