General Notes General Notes Guidelines for photometric measurements Correct position of the vial (Ø 24 mm): 1 . Vials, caps and stirring rods should be cleaned thoroughly after each analysis to prevent interference . Even minor reagent residues can cause errors in the test result . 2 .
Functional Description Functional Description Operation Display Backlight Press the [Option] key to turn the display backlight on or off. The backlight is switched off auto- Switch the unit on using the [ON/OFF] key . Option matically during the measurement . The display shows the following: "CL L"...
Methods Methods Chlorine, Low Range, with Powder Pack Notes: CL L 1 . Vial cleaning: Reagent As many household cleaners (e .g . dishwasher detergent) contain reducing substances, the subsequent determination of chlorine may show lower results . To avoid any measurement errors, only use glassware 0 .02 –...
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Methods Methods Chlorine with Powder Pack Reagent Notes: CL H 1 . Vial cleaning: (plastic vial type 2, 10 mm) As many household cleaners (e .g . dishwasher detergent) contain reducing substances, the subsequent 10 ml determination of chlorine may show lower results . To avoid any measurement errors, only use glassware 0 .1 –...
Methods Menu options - Calibration Mode Menu Selections CAL – User Calibration Switch the unit off. Note: Press the [MODE] key and hold . Mode user calibration (Display in calibration mode) Switch the unit on using the [ON/OFF] key . factory calibration (Display in calibration mode) Allow the 3 decimal points to be displayed before releasing the [MODE] key .
Calibration Mode Technical Data Factory Calibration Reset Technical Data Resetting the user calibration to the original factory calibration will reset all methods and ranges . Instrument single wavelength, direct reading colorimeter A user calibrated method is indicated by a "Cal" symbol while the test result is displayed . RESULT Light source: LED, interference filter (IF) and photosensor in transparent cell chamber.
"Factory calibration reset") . For additional product information, contact your local authorized dealer, Thermo Scientific Orion technical sales represen- tative or contact us using the Water and Laboratory Products (WLP) information on the back page of this user manual .