Hach-Lange CL17 Instruction sheet - Manual (Page 6)

Page 6
CL17 Free and Total Chlorine Calibration/Verification
5449089Cal Kit.fm
CL17 Free and Total Chlorine Calibration/Verification
If Verifying:
a. Allow the analyzer to make at least four measurements.
b. Record each reading if the analyzer is not connected to a computer.
13. Turn the lever on the 3-way valve to Position “B” to allow process water to be sampled
(see Figure 4 on page 5 ).
14. Move the Zero Standard (Organic-free Water) to a stable location below the level of
the 3-way valve. Disconnect the draw line from the valve, remove the calibration cap
from the bottle, and place the original cap on the bottle.
15. Either discard the zero standard or immediately use it on the next analyzer being
calibrated.
Figure 5 Calibration Cap Assembly
Preparing the Chlorine Standard
Important Note: Use the standard within two hours of preparation. After dilution, chlorine standards
are not stable.
1. Make sure there is no Chlorine Standard in the bulb before breaking the ampule.
2. Break the top off the Voluette ® * Chlorine Standard ampule.
3. Pour the contents of the ampule into a new 500-mL bottle of Organic-free Water.
When the liquid starts to flow from the ampule, tilt the ampule and bottle to allow air
into the ampule as it empties. Do not submerge any part of the ampule in the
water. Make sure all the liquid is emptied into the bottle, and that none is left either in
the ampule cap or body by tapping it side to side in the neck of the bottle.
4. Tightly cap the bottle with its original cap.
5. Gently invert the bottle at least five times.
Male Luer Lock Fitting Female Luer Lock Fitting
Vent Line must not be submerged.
Internal Draw Line must reach the bottom of the bottle.
Calibration Cap
* Voluette is a registered trademark of Hach Company.
Bulb