| ลำดับ | Parameter | วิธีวิเคราะห์ |
|---|---|---|
| 11 | Nitrite Nitrogen | Colorimetric Method |
| 12 | Organic Nitrogen | Macro Kjeldahl Method |
| 13 | Total Kjeldahl Nitrogen (TKN) | Macro Kjeldahl Method |
| 14 | Oil & Grease |
Partition/Soxhlet Extraction Method |
| 15 | Permanganate Value | Titration Method |
| 16 | Phosphate | Stannous Chloride Method |
| 17 | Phosphorus | Stannous Chloride Method |
| 18 | Total Solids | Dried at 103 – 105 °C |
| 19 | Total Dissolved Solids | Dried at 103 - 105 °C, Dried at 180 ±2 °C |
| 20 | Total Suspended Solids | Dried at 103 – 105 °C |