DR/2400
Chlorine, Free
ChlorineFre_PT_Other_DPD_Eng_Ody.fm Page 1 of 6
• Analyze samples immediately. Do not preserve for later analysis.
• Clean the Pour-Thru cell and all labware as specified in Treating Analysis Labware on page 4.
• See Reagent Preparation on page 3 for instructions on preparing the indicator solution.
• Protect the Pour-Thru Cell from contamination when not in use by inverting a small beaker over the top of the glass funnel.
• Install the Pour-Thru Cell into the adapter so that the long pathlength (1-in./25-mm) is parallel to the front of the instrument.
Chlorine, Free
Method 10059
DPD Rapid Liquid Method*
*Adapted from Standard Methods for the Examination of Water and Wastewater.
Pour-Thru™ Cell
(0.02 to 2.00 mg/L)
Scope and Application: For treated water.
1. Touch
Hach Programs.
Select program
82 Chlor. F & T RL.
Touch
Start.
2. Install the Pour-Thru
Cell and multi-
pathlength cell adapter in
the sample cell
compartment. Use the 25-
mm cell pathlength.
Note: See Section 2.6.1 in the
Instrument manual for
installation details.
Flush with 50-mL of
deionized water.
3. Pour approximately
50 mL of sample into the
Pour-Thru Cell.
4. When the flow stops,
touch
Zero.
The display will show:
0.00 mg/L Cl
2
Tips and Techniques
DR/2400 Pour-Thru Cell Method 10059
Hach Programs
Zero
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