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The procedure extends path-length-based absorption correction to the Kratky-type geometry by averaging Beer\u2013Lambert attenuation over the constrained illuminated scattering volume and by including experimentally measured primary beam profiles and capillary-wall absorption. Sensitivity analysis shows that the vertical illumination geometry dominates the calculated angle-dependent transmission factor, whereas the horizontal beam-width effect is negligible. Using measured beam profiles makes the correction instrument specific and avoids introducing an effective uniform beam height as an approximation. For strongly absorbing nonafluoro-\n                    <jats:italic>tert<\/jats:italic>\n                    -butanol, the conventional scalar primary beam transmission correction fails after subtraction of empty-capillary scattering, while the numerical correction enables physically meaningful absolute-scale data reduction. Comparisons between independently calculated theoretical SWAXS intensities and the two reduced experimental datasets obtained sequentially using two different detectors in the same experiment on the same Kratky-type SWAXS camera provide a direct experimental cross check for the data-reduction workflow based on calculated transmission factors. They indicate that the observed limitation is associated with transmission measurement of a spectrally modified primary beam, rather than with the Kratky-type geometry itself. Importantly, the results show that the limitations of conventional scalar transmission corrections are not confined to extreme cases but may also affect routine water-based absolute-scale SWAXS calibration. A simple Beer\u2013Lambert-type numerical scalar correction can still provide a useful qualitative approximation, whereas reliable quantitative analysis requires the full angle-dependent\n                    <jats:italic>A<\/jats:italic>\n                    (2\u03b8) correction.\n                  <\/jats:p>","DOI":"10.1107\/s1600576726006837","type":"journal-article","created":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T17:16:28Z","timestamp":1785258988000},"page":"1374-1383","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":0,"title":["Angle-dependent X-ray absorption correction in small- and wide-angle X-ray scattering: accounting for constrained scattering volume, beam profiles and capillary wall attenuation"],"prefix":"10.1107","volume":"59","author":[{"given":"Jure","family":"Kova\u010d","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05njb9z20","id-type":"ROR","asserted-by":"publisher"}],"department":["Faculty of Chemistry and Chemical Technology"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrej","family":"Jamnik","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05njb9z20","id-type":"ROR","asserted-by":"publisher"}],"department":["Faculty of Chemistry and Chemical Technology"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Istv\u00e1n","family":"Szil\u00e1gyi","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01pnej532","id-type":"ROR","asserted-by":"publisher"}],"department":["MTA-SZTE Momentum Biocolloids Research Group, Department of Physical Chemistry and Materials Science, Interdisciplinary Research Center"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3554-8397","authenticated-orcid":true,"given":"Matija","family":"Tom\u0161i\u010d","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05njb9z20","id-type":"ROR","asserted-by":"publisher"}],"department":["Faculty of Chemistry and Chemical Technology"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"329","published-online":{"date-parts":[[2026,8,6]]},"reference":[{"key":"jl5129_bb1","doi-asserted-by":"crossref","unstructured":"Abascal, J. 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