Residual Chlorine Analyzers
SEKO Photometer System (DPD)
DPD photometric chlorine analyzer — compact mini lab; free/total chlorine and combinations with pH/ORP.
Max flow
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Max pressure
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Turndown / accuracy
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Wetted materials
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Protection
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Power
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Features
- DPD photometric chlorine method
- 520 nm sensor + LED
- Peristaltic reagent dosing
- Free / total / combined chlorine
- Optional pH, ORP, temperature
- Multi-parameter models
- Professional water treatment
Specifications
| Brand | SEKO |
| Method | DPD |
| Chlorine range | 0 – 5 ppm |
| pH | 0 – 14 (combined models) |
| ORP | ±1500 mV (combined models) |
| Temperature | 0 – 100°C（PT100/PT1000） |
Applications
Materials & media
Ask for wetted-parts details or check the brochure.
Common chemicals: NaOCl, acids, alkalis, polymers — confirm compatibility when inquiring.
Controls & communication
Control options are listed in notes or confirmed on inquiry.
Models & specs
| Model | Notes | |
| SPT2CL | free chlorine | |
| SPT2CT | total chlorine | |
| SPT3CL | free chlorine + pH | |
| SPT4CL | free chlorine + pH + ORP | |
| SPT5CL | + pH + ORP |
Dimensions & installation
Dimensional drawings available on request (CAD / PDF).
Downloads
Related / accessories
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Need help selecting?
Share duty (flow, pressure, media, controls) — we reply within 1 business day.