Hach-Lange CL17 Instruction sheet - Manual

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5449089Cal Kit.fm CL17 Free and Total Chlorine Calibration/Verification
54490-89
Instruction Sheet
CL17 Free and Total Chlorine Calibration/Verification
Guidelines for Use
Introduction
The CL17 Calibration/Verification Kit allows the user to perform a calibration or verification of
the analyzer using a chlorine standard of known concentration.
Recommended use
Under normal circumstances, Hach Company does not recommend manual calibration of the
CL17. Verification, however, is recommended following each change of analyzer reagents.
This can be performed either by comparison with a laboratory, a portable instrument or by
using the CL17 Calibration/Verification Kit.
Certain regulatory agencies and other organizations require manual calibration or verification
of chlorine analyzers. Follow the guidelines set by those organizations to determine required
frequency of calibration.
Guidelines for Accuracy
Making and using chlorine standards with the accuracy needed to calibrate or verify the CL17
requires precisely controlled reagents, clean hardware and careful laboratory practice. Use
only the reagents specified in this instruction sheet and follow the instructions carefully. Failure
to do so may result in incorrect calibration forcing the analyzer to read inaccurately. To confirm
correct use of this kit, perform the statistical calculations described in
Preparing the Chlorine
Standard on page 6
Figure 1 shows the two styles of analyzers under the CL17 name.
Figure 1 CL17 Analyzers
New Style CL17 Old Style CL17