Not sure if this has been linked to previously, I couldn't find it on a search.
http://cradpdf.drdc.gc.ca/PDFS/zba27/p155544.pdf
"Effect on Scrubber Endurance on Storing Soda Line in CF Rebreathers"
Whilst the actual storing of soda lime is nothing new, the effects of ice on a rebreather & the effect of reduced duration of a scrubber's total time when conducting multiple dives on one fill may be interesting to those interested.
regards
Brad