STEP SYSTEMS Nitrachek 404 Operation Manual page 2

Presentation
Nitrachek 404 measures nitrate in
plant
soil
water
The test-strips are pre-tested.
A sticker on the container shows the lot number that must be
displayed on Nitrachek, before starting measuring.
Range = 5 à 500 mg/l NO3 (+/- 10 %)
Accuracy is higher in the middle of the range (50 – 250 mg/l)
A plastic checker allows test the meter.
A standard solution, delivered with the strips, allows training
and testing the whole procedure.
Dipping time = 2 s .
Get rid of a standard solution tube after 10 tests.