"Field","Report A","Report B","Interpretation" "Sample and report identity","","","Retain the named sample and report date" "Sampling point in water process","","","Distinguish actual reactor inlet from another point" "Reported measurement: UVT or turbidity","","","Do not substitute scattering for transmission" "UV wavelength (nm)","","","A percentage without wavelength is incomplete" "Optical path length and unit","","","Different paths cannot be ranked by percentage alone" "Sample preparation and method","","","Process filtration and laboratory preparation are distinct" "UVT result (%)","","","Keep percentage with wavelength/path/sample basis" "Turbidity result and method, if supplied","","","Separate observation; no NTU-to-UVT conversion" "Reactor rating optical condition","","","Copy its stated wavelength/path/sample condition" "Report/rating comparability","","","Supported match or exact missing definition" "Fictional ideal absorption example","One equivalent 1 cm segment: 80%","Two equivalent 1 cm segments: 64%","Same wavelength; homogeneous absorbing sample; 0.80 x 0.80. No scattering/reactor/dose model" "Use","Manual worksheet; no formulas. Import UTF-8 with comma separators; widen columns and wrap text. Save an editable spreadsheet copy. Enter supplied evidence in blank fields; use not supplied for missing records. Examples are not your project results.","Keep reports in separate columns. Final two rows are manual conclusions.","This reads supplied evidence; no lamp exposure, home experiment or treatment approval" "Source context","https://www.epa.gov/system/files/documents/2022-10/ultraviolet-disinfection-guidance-manual-2006.pdf","https://www.priva.com/horticulture/solutions/greenhouse-water-systems/priva-vialux-line","" "Rating condition this report can address","","","State only the matched optical condition" "Unanswered condition or next evidence request","","","Keep dose, microbial reduction and release separate"