Chemicals, Generators and Controllers
The three-pronged approach to safer chemical feed systems.
Why compatibility and certification matter
When setting up a chemical feed system, three critical components must work together seamlessly:
- The chemical
- The chemical generator or feeder
- The chemical controller.
All components should be compatible and certified to ensure safe and effective operation. Using the wrong chemical or concentration can lead to serious issues—such as corrosion, equipment failure, underdosing or overdosing, and even dangerous reactions like explosions.
Key considerations
- Chemical feeders are designed for specific chemical types (solid, liquid, or slurry) and even specific formulations (e.g., trichlor vs. cal hypo).
- This applies not only to disinfectant tablet feeders but also to mechanical feed pumps for other chemical dosing.
- Incorrect chemical use can compromise system performance and safety.
Regulatory requirements
Beyond EPA registration for disinfectants and algaecides, the CDC’s Model Aquatic Health Code (MAHC) requires chemicals to be certified to:
- NSF/ANSI/CAN 50
- NSF/ANSI/CAN 60
- Or have FIFRA registration.
The bottom line
Using compatible, certified chemicals, generators, and controllers helps ensure your entire chemical feed system operates safely, efficiently, and in compliance with industry standards.
Pool and Spa Chemicals Certification
Evaluate the risk and potential toxicity of your pool chemicals by certifying them to the highest standard in the industry, NSF/ANSI/CAN 50.
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Certify your drinking water treatment chemicals to meet regulatory requirements around the world.
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What’s New with NSF
CELSIUS® Products Earn NSF Certified for Sport® Certification
August 20, 2026CELSIUS® has earned NSF Certified for Sport® certification for select products, including the CELSIUS VIBES line, reinforcing the brand’s commitment to quality, transparency and consumer trust.
Thomas Vyles Honored With 2026 Walter F. Snyder Environmental Health Award
August 19, 2026The award honors Walter F. Snyder, co-founder and first executive director of NSF, and pioneers whose work advances environmental and public health.
NSF Hosts First External Review Panel for ‘NSF/KWTC 555’ with Key Asian Water Authorities
August 3, 2026Joint standard development gains momentum to enhance confidence in Asia’s water industry and advance drinking water safety.
NSF Achieves European Accreditation for Drinking Water Product Certification Ahead of 2027 EU Deadline
July 22, 2026The ISO/IEC 17065 accreditation from BELAC complements NSF’s testing capacity, enabling end-to-end support for EU Drinking Water Directive (DWD) readiness ahead of the January 2027 deadline.