Images showing the pristine sample production and handling process with the ARC/COSmIC setup samples as an example (panels (a)–(f)) and all the exposed samples (panel (g)). (a) Custom-built dry N₂ transporting vessel handled in the N₂ glove box. (b) PELCO vacuum desiccator used for sample transportation handled in the N₂ glove box. (c) PELCO vacuum desiccator containing blank substrates prior to sample deposition. (d) Tholin samples being produced in the ARC/COSmIC setup. (e) Tholin sample being handled and packed in an N₂ glove box with an oxygen sensor showing 0.2% vol O₂ level. (f) Packed PELCO vacuum desiccator containing pristine tholin samples under vacuum and ready for shipment. (g) Exposed samples shipped in PELCO SEM pin storage boxes (from left to right: ARC/COSmIC, JHU/PHAZER with UV samples on the top and plasma samples on the bottom, and UNI/PAC). All samples shown were produced using the 5% CH₄ in N₂ gas mixture.