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Do you have another question? Feel free to ask in the comments below!
Question | Answer |
|---|---|
| What is the accuracy of the app? | The accuracy depends on the accuracy of the test strips. Test strips for nitrate give an indicative measurement. In our tests, we've found an accuracy of ~30%, while conventional laboratory measurements have an accuracy around 10%. See also the Accuracy page. |
| What does it cost? |
| ~1 EUR per measurement. Check the getting started page for an order form. | |
| What do I need for a nitrate concentration measurement? | For a Nitrate concentration measurement you need Hach Nitrate test strips, a Nitrate App reference card, and a smartphone with the Nitrate App installed. Check the getting started page. |
| Does the Nitrate App also work with other brands of test strips? | No, other test strips have different legend colors. |
| Can I also measure other water quality parameters with the Nitrate App? | We enabled measuring salinity (EC) by using the Nitrate App to scan the result from a Hanna Dist4 EC meter, see the Nitrate App for EC measurements page. More options will follow. |
| Can I also measure nitrate content in soils? | A do-it-yourself protocol for soil Nmin measurements is described at the Nitrate App for Soil Nmin measurements page. |
| What is your business model? | Like all Deltares software, the app is free ('dare to share'). We're mainly interested in finding new projects to work on the next developments for the app, which will then become available for the entire user community. Organizations with specific requests (e.g. other parameters, an own private web viewer) are encouraged to contact us. |