40 CFR Part 53, Appendix A — Optional Forms for Reporting Test Results

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗

[Figure — view on eCFR: https://www.ecfr.gov/graphics/er31au11.013.gif]

[Figure — view on eCFR: https://www.ecfr.gov/graphics/er31au11.014.gif]

[Figure — view on eCFR: https://www.ecfr.gov/graphics/er31au11.015.gif]

Figure B-3 to Appendix A to Subpart B of Part 53—Form for Test Data and Calculations for Lower Detectable Limit (LDL) and Interference Equivalent (IE) (see § 53.23(c) and (d))

LDL Interference Test Data

[Figure — view on eCFR: https://www.ecfr.gov/graphics/er06mr24.035.gif]

[Figure — view on eCFR: https://www.ecfr.gov/graphics/er31au11.017.gif]

Figure B-5 to Appendix A to Subpart B of Part 53—Form for Calculating Zero Drift, Span Drift and Precision (see § 53.23(e))

Calculation of Zero Drift, Span Drift, and Precision

[Figure — view on eCFR: https://www.ecfr.gov/graphics/er06mr24.036.gif]

[76 FR 54326, Aug. 31, 2011, as amended at 89 FR 16385, Mar. 6, 2024]