Aquasafe WSL25 Pro, Инструкция по эксплуатации, Страница: 104 / 153

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Place the vial in the sample chamber, making sure that the marks on the instrument and vial
are aligned.
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Press the Test key
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Wait for a reaction period of 10 minutes
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After the reaction period, the measurement starts and the result is displayed in mg/l Nitrate
LOD/Tolerance
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The Lower LOD is 0.08 mg/l (80ppb), upper LOD is 1 mg/l (1000ppb).
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Tolerance: ± 0.005mg/l.
Notes
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For best results, rinse vials thoroughly between with deionised water. Ensure that the
outside of the vials are clean, dry and free from fingerprints. Always handle vials by the lid
where possible.
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The tablets should be added direct from the foil avoiding contact with hands or surfaces.
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Nitrite present in the sample will also react, leading to a higher result. To correct, carry out a
nitrite test (P270) on the same sample and subtract the result.
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Nitrate concentrations above 1 mg/L can be diluted up to 100x, with the result multiplied up
to compensate.
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Interferences may occur from presence of the following ions: Antimony (III), Iron (III), Lead,
Mercury (I), Silver, Chloroplatinate, Metavanadate, Bismuth.
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Copper (II) ions may artificially lower test results.