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12CALIBRATION CHLORINE STANDARDSThe meter should be calibrated with free chlorine standards. The calibrationshould be done with a distilled or deionized water blank and one chlorinestandard of known concentration. The concentration of the calibrationstandard should be similar to the expected concentration of the sample thatwill be tested.To perform a bromine calibration, prepare a bromine with a concentrationthat is equivenlent to a chlorine dioxide standard that is within the range ofthe chlorine dioxide test. (1 ppm chlorine = 1.9 ppm bromine). Follow theprocedure below but select the bromine test.Chlorine Secondary Standards (Code 4140-03) are available to verify theperformance of the meter.CHLORINE CALIBRATION PROCEDURE1. Press and briefly hold toturn the meter on. The LaMottelogo screen will appear for about3 seconds and the Main Menuwill appear.Main MenuTesting MenuEditing Menu12:00:00 001/5002. Press ENTER to select TestingMenu.All Tests015 Bromine L DPD016 Bromine T DPD024 Chlorine L DPD025 Chlorine T DPD12:00:00 001/5003. Scroll to and select 025 ChlorineT DPD from menu.025 Chlorine T DPDScan BlankScan Sample12:00:00 001/500Calibration |
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