Product - Process Chlorine Selection

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Steps to Choosing Your Chlorine Analyzer  


1. Look at the instrument's chlorine concentration range and sample pH range to make your initial decision.

Specification CL17 CLF10 sc / CLT10 sc
Chlorine Concentration Range 0-5 mg/L 0-10 mg/L
Sample pH range (w/o buffering) Unlimited pH 4-9


2. Next, consider each technology's key differentiators to determine which technology is preferred for your application.

Factor CL17 CLF10 sc / CLT10 sc
Impact on readings due to sample pH, chlorine concentration, temp, flow and/or pressure changes No impact on readings Readings may be impacted, Adjustment to calibration may be needed
Calibration Calibration not needed Yes. Frequency based upon the application
Routine Maintenance Tubing replacement needed every 6 months Membrane and electrolyte replacement every 3-6 months
Reagents Routine reagent replacement needed every 30 days None needed
Reagents in Discharge Yes No
Multi-parameter Single parameter Optional pH and Temperature


3. Finally, consider the other specifications and the keys to application success to make sure that your preferred instrument is right for your application.

Specification CL17 CLF10 sc / CLT10 sc
Accuracy ± 5% or 0.03 mg/L, whichever is greater CLF10 sc = ±3% at pH<7.2 (±0.2 pH unit), ±10% at a pH<8.5 (±0.5 pH unit) CLT10 sc = ±10% at a pH<8.5 (±0.5 pH unit)
Minimum Detection Limit (MDL) 30 ppb 30 ppb (or less)
Response Time Batch analysis, 150 seconds cycle time Continuous, CLF10 sc T90 = 140s CLT10 sc T90 = 100s
Regulatory Method SM 4500 CLG 40CFR 141.74 EPA Method 334.0 EPA Method 334.0
Measurement Technology DPD Colorimetric Method Amperometric Method
Automated Cleaning Available No Yes


4. Keys to application success

Factor CL17 CLF10 sc / CLT10 sc
Appropriate Applications (Requirements)
  1. Must be able to replace reagents monthly
  2. Must have a system to manage the waste stream (if required)
  1. Must have uninterrupted sample flow
  2. Must have uninterrupted power
  3. Sample pH should be stable within +/- 0.5 pH unit from the average value
  4. Chlorine concentration should be within +/- 20% from the average value

Questions? Be sure to consult your local sales representative for an application audit and to match the best solution for your application.