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Interpretation IC 52.2-1999-1 - July 25, 2001 (Ref. Section 4.6.6)
Interpretation IC 52.2-1999-2 - July 11, 2002 (Ref. Informative Appendix E – Cross-Reference and Application Guidelines, Table E-1)
Interpretation IC 52.2-1999-3 - July 11, 2002 (Ref. Section 12, Minimum Efficiency Reporting Value (MERV) for Air Cleaners, Table 12-1, Minimum Efficiency Reporting Value (MERV) Parameters)
Interpretation IC 52.2-1999-4, February 5, 2005 (Ref. Section 12.4, regarding airflow rate as the basis for reporting MERV)
Interpretation IC 52.2-1999-5, January 27, 2007 (Ref. Section 12 and Table 12-1, regarding Minimum Reporting Efficiency Value (MERV) for air cleaners)