Thermo Electron Orion AQUAfast II Quick Start Card Download Page 2

Colorimeters come pre-calibrated, however a user can
check and adjust calibration if desired.

Always use standard in recommended range:

1. Hold the 

mode

key while turning on the

colorimeter with the 

power

key.

2. Fill clean dry cuvette to mark with standard 

and cap.

3. Place cuvette in colorimeter and press 

zero•test

key.

4. Remove cuvette, remove cap, and add tablet or

reagent.  Crush and stir with stir rod.  
Recap the cuvette.

5. Allow sample to react for any required wait time.*
6. If additional tablet or reagent is required, add,

crush, and stir with stir rod.  Allow sample to react
for any required wait time.

7. Wipe any moisture or fingerprints off of cuvette

and place in colorimeter.

8. Press 

zero•test

key.

9. If reading is correct press, 

power

key to 

exit calibration. 

10. If adjustment is required, press 

mode

key to

increase the value or press 

zero•test

key to

decrease value.

11. Press 

power

key twice to accept calibration.  

: :

will be displayed briefly.

* NOTE:  When calibrating Zinc and Copper, a

reading must be taken at this point.  Proceed to
step 7.  Perform reading, then add additional
reagent in step 6 and complete calibration.

After troubleshooting all components of your measurement system, contact The
Technical Edge

SM

for Orion products. Within the United States call 1.800.225.1480,

outside the United States call 978.232.6000 or fax 978.232.6031. In Europe, the
Middle East and Africa, contact your local authorized dealer. For the most current
contact information, visit www.thermo.com.

235625-001   Rev. C

Analyze • Detect • Measure • Control™

Calibration

Orion AQUAfast

®

II

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