NSF/ANSI Standard 46 - Evaluation of Components and Devices ...
NSF/ANSI Standard 46 - Evaluation of Components and Devices ...
NSF/ANSI Standard 46 - Evaluation of Components and Devices ...
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<strong>NSF</strong>/<strong>ANSI</strong> <strong>St<strong>and</strong>ard</strong> <strong>46</strong><br />
• Ultraviolet disinfection devices<br />
– Performance <strong>and</strong> evaluation<br />
• UV disinfection test<br />
– Criteria (<strong>46</strong>)<br />
» Individual fecal coliform effluent samples not to<br />
exceed 200 organisms/100 mL<br />
» All components designed to be exposed to wastewater<br />
<strong>and</strong> UV light shall be resistant to UV attack, corrosion<br />
<strong>and</strong> structural deformation<br />
385 - Geometric mean <strong>of</strong> all required effluent samples<br />
collected in final 10 weeks must meet the pass/fail<br />
criteria:<br />
» fecal coliform ≤ 200 organisms /100 mL<br />
» E. coli ≤ 126 organisms /100 mL<br />
» Enterococci ≤ 35 organisms /100 mL
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