"A metrological calibration facility for particle number counters used in emission measurements" - Interactive discussion https://ar.copernicus.org/preprints/ar-2026-33/ "A metrological calibration facility for particle number counters used in emission measurements" - Interactive discussion enRC1: 'Comment on ar-2026-33', Anonymous Referee #1, 08 Oct 2026https://ar.copernicus.org/preprints/ar-2026-33/ar-2026-33-RC1.pdfRC1: 'Comment on ar-2026-33', Anonymous Referee #1, 08 Oct 2026Thu, 08 Oct 2026 19:08:54 +0200