Type | Qualitative test paper |
Presentation | Reel of 5 m length and 10 mm width |
Color reaction | for Nitrate (NO3-): white to red (dip test paper into sample and afterwards into sulfuric acid 96%); for Nitrate (NO2-): white to yellow (dip test paper into sample and afterwards into Hydrochloric acid 5 mol/l) |
Limit of sensitivity | 10 mg/l nitrate (NO3–);5 mg/l nitrite (NO2–) |
Reference | 906 11 |