CRI - carpet and rug institute's green label certification for vacuums
To qualify for the Green Label, these vacuums must go through a stringent testing process that measures three key performance factors:
- Soil Removal — The vacuum must remove a set quantity of soil from carpet in four passes
- Dust Containment — The vacuum must not release more than 100 micrograms of dust particles per cubic meter of air. This protocol evaluates the total amount of dust particles released by the brush rolls, through the filtration bag and via any air leaks from the system, and is more stringent than the National Ambient Air Quality Standards
- Carpet Appearance Retention — The vacuum should not affect the appearance of the carpet more than a one-step change based on one year of normal vacuum use
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