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Summary of Contents for STEP SYSTEMS Nitrachek 404
- Page 1 Operation Manual Nitrachek 404 Left click to skip to next view...
- 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 –...
- Page 3 Nitrachek description Hatch, finger, strip carrier 2 diodes and miror Sliding switch to swtich off the beeper 9 V battery compartment...
- Page 4 Battery Hatch must be closed when battery is changed Remove the battery, if the meter is not to be used during several months. If battery is changed within 30 seconds , datas are kept in memory. A battery icon is displayed when battery gets weak. EEE message when battery is flat.
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Page 5: Clock Functions
Clock functions Adjusting the date : Adjusting the time : Open the hatch and wait for CAL Open the hatch and wait for CAL Press round button twice: CLOC is displayed Press round button twice: CLOC is displayed Press square then round button : year flashes Press square button : time flashes Arrow button to change year Arrow button to change time... - Page 6 Do not clap...
- Page 7 Enter lot number Each strip box wears a sticker showing the lot number to be displayed according to room temperature. To enter or modify the lot number, open the hatch, press an arrow button, to increase or decrease the lot number, displayed in top right corner.
- Page 8 Error message / checker Test is carried on only on lot number 5. White side first, then grey side Result should be within the limits printed at the back of the meter...
- Page 9 Storage and handling of test strip Storage < 1 month : dry, 15 °c Storage > 1 month : 4 – 8 °c Container is always closed Close container immediatly...
- Page 10 Calibration – Dipping Open the hatch. The display briefly shows 8 8 8 8, then "CAL" Lot number flashes. Insert test strip in strip carrier Pad downwards and facing the towards the meter body. Close smoothly the hatch . Sign " - - - " displays. If calibration is accepted, the meter beeps twice and displays "GO"...
- Page 11 Shake the strip during 3 – 4 seconds to remove any remaining excess solution. Let the strip react . Do not touch, wipe or dab the test strip. Within the 10 last seconds of countdown (not before) put the strip on edge (only on edge) on an absorbing paper during 1 second only , to allow capilarity absorption of remaning solution.
- Page 12 Results If result > 500 mg/l NO3 If result < 5 mg/l NO3 3 measures per sample Calcule the average of 3 measures. Example : 294 , 278, 300. Average = 290 mg/l Check that the 3 measures are within limits of : and + 10 % of this average.
- Page 13 20 last results in memory Time Memory Week 9 : 37 Wk 2 Result ou mg/L...
- Page 14 3 results on same sample...
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Page 15: Maintenance & Cleaning
Maintenance - cleaning Manipulate this instrument with care. Avoid mecanical shocks, high or low temperatures, humidity. Do not let moisture deteriorate the meter. Remove battery before cleaning.
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