Halogen MP-5F vs. Hach CL17sc
Quick Answer
Is the Halogen MP-5F a good replacement for the Hach CL17sc?
Side-by-side comparison
| Feature | Halogen MP-5F | Hach CL17sc |
|---|---|---|
| Measurement method | Bare-electrode amperometric | DPD colorimetric (EPA 4500-Cl G) |
| Reagents | None | Buffer + indicator (~0.5 L each / 31 days) |
| Waste stream | None — direct in-pipe | Yes — spent reagent + sample to drain |
| Parameters | 5 (free Cl₂, pH, conductivity, temp, ORP) | 1 (free or total Cl₂) |
| Flow requirement | Independent — reads at zero flow | Regulated sample flow / conditioning |
| NSF/ANSI 61 in-pipe | Yes (wet-tap in a main) | No — side-stream only |
| Calibration / service | 6 months (typical) | Reagent change ~monthly (30-day unattended) |
| Self-cleaning | Yes (SensiCLENE™) | No |
| Est. annual operating cost | Request a representative quote | Ongoing reagent + maintenance costs |
Competitor specifications per Hach published CL17sc documentation; comparison for general guidance.
Why utilities switch from the CL17sc
The CL17sc is a proven EPA-approved DPD instrument, but the DPD method carries ongoing costs: buffer and indicator reagents that must be purchased, stored, and replaced about monthly; a conditioned side-stream; and a continuous waste stream of spent reagent and sample water. Because it reports a single parameter, pH and the other water-quality signals require separate instruments.
The MP-5F replaces the reagent chemistry with bare-electrode amperometry and the patented SensiCLENE self-cleaning system, so there are no reagents, no membranes, and no waste stream. It installs directly in the pipe (NSF/ANSI 61), reads accurately even at zero flow, and reports free chlorine, pH, conductivity, temperature, and ORP from a single probe — while holding calibration for 6 months (typical).
Frequently asked questions
What is the best alternative to the Hach CL17sc?
The Halogen MP-5F is the most common replacement for the Hach CL17sc. It removes the CL17sc’s DPD reagents, monthly reagent changes, and continuous sample/reagent waste stream — installing directly in-pipe (NSF/ANSI 61 certified) and measuring five parameters from one probe. Reagent-free measurement avoids reagent purchases. Budget separately for cleaning beads, condition-based components, reference checks and labor.
Does the MP-5F use reagents like the CL17sc?
No. The CL17sc is a DPD colorimetric analyzer that continuously consumes buffer and indicator reagents and sends spent reagent to drain. The MP-5F is a bare-electrode amperometric sensor — no reagents, no indicator chemistry, and no waste stream.
Can the MP-5F install where the CL17sc needs a sample panel?
Yes. The CL17sc requires a conditioned side-stream sample. The MP-5F is NSF/ANSI 61 certified for direct in-pipe (wet-tap) installation, so it can mount directly in a distribution main, tank, or clearwell with no sample panel and no waste line.
How much does switching from the CL17sc to the MP-5F save?
DPD analyzers carry recurring reagent and maintenance costs. MP-5F maintenance includes cleaning beads and condition-based component replacement; request a representative quote, and eliminates reagent purchasing and waste-water handling entirely.
See the MP-5F in your application
Request a pilot or talk through a CL17sc replacement with our team.