Berkey® Phoenix Gravity filters have been tested by independent, accredited laboratories to NSF/ANSI standards.
The reports below give the detailed results of the tests carried out on different groups of contaminants.
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The performance of Berkey Phoenix filters is assessed using internationally recognised test protocols. These standards are not marketing labels but strict test methods used by independent laboratories.
NSF/ANSI 42
→ Covers the aesthetic improvement of water
→ Reduction of chlorine, taste and odour
→ Better sensory quality of drinking water
NSF/ANSI 53
→ Covers the reduction of contaminants harmful to health
→ Heavy metals (lead, mercury, cadmium, etc.)
→ Pesticides, herbicides and disinfection by-products
→ Long-term health protection
NSF/ANSI 401
→ Covers emerging contaminants
→ Pharmaceutical and hormone residues
→ Modern chemicals present at very low doses
→ A recent standard, suited to today’s drinking water issues
EPA protocols (Environmental Protection Agency)
→ Test methods used by the US environmental agency
→ Performance assessment on chemical, organic and industrial pollutants
→ An international reference for water safety
These protocols ensure that the stated results:
→ are measured in real conditions
→ are reproducible and verifiable
→ meet high health requirements
Berkey Phoenix filters are tested to these standards to ensure reliable, consistent and documented purification, day after day.