Halogen MP5 vs. Hach CL17sc
Quick Answer
Is the Halogen MP5 a good replacement for the Hach CL17sc?
Side-by-side comparison
| Feature | Halogen MP5 | 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 | 6–12 months | Reagent change ~monthly (30-day unattended) |
| Self-cleaning | Yes (SensiCLENE™) | No |
| Est. annual operating cost | as low as ~$185 | 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 MP5 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 6–12 months.
Frequently asked questions
What is the best alternative to the Hach CL17sc?
The Halogen MP5 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. Operating cost drops to as low as $185/year, eliminating the CL17sc’s recurring reagent and waste-handling costs.
Does the MP5 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 MP5 is a bare-electrode amperometric sensor — no reagents, no indicator chemistry, and no waste stream.
Can the MP5 install where the CL17sc needs a sample panel?
Yes. The CL17sc requires a conditioned side-stream sample. The MP5 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 MP5 save?
DPD analyzers carry recurring reagent and maintenance costs. The MP5 operates for as low as $185/year (SensiCLENE cleaning beads $35/yr plus a pH sensor at $295 every 1–2 years), and eliminates reagent purchasing and waste-water handling entirely.
See the MP5 in your application
Request a pilot or talk through a CL17sc replacement with our team.