Visually compare US "ASHRAE" performance standard values to the European equivalent.

The Test Std. Comparison Chart touch point to the left allows you to visually compare US 'ASHRAE 52.1 (1992) and 52.2 (2007)' performance standard values to the European equivalent 'EN 779 (2002)' performance standard values on the basis of a climbing scale from low to high dust removal efficiency.

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Test Comparisons provided by Blue Heaven Technologies.