Passing the Test

Monitoring the Monitors (PDF)
A look at the function of automatic controllers and water quality testing devices and how they are evaluated and tested under NSF/ANSI Standard 50. 

Search and Deploy (PDF)
How to use search engines to find tested and certified products that are up to code. 

The Right Part (PDF)
Using non-OEM parts in pumps and fittings can created unintended changes in how the products operate, and potentially dangerous situations. Here’s how to avoid that scenario. 

Good Chemistry (PDF)
How chemical feeders, generation systems, flow-through feeders and chemical pumps get tested and certified in accordance with NSF/ANSI Standard 50. 

Quality Help (PDF)
Understanding UV and ozone and how these supplemental products are tested for efficacy and performance can help you maintain better water quality. 

Filtering Effects (PDF)
A look at filtration technologies, filter products and filter media — along with how they are tested and certified in accordance with NSF/ANSI Standard 50.