Hi Joe, I had thought the same thing-maybe Mike was using 4-8. Supposedly, SMI have not sent any Sodasorb 6-12 to the Pacific until very recently. So only 4-8 wouldv'e been available in that neck of the woods, only Mike can tell us for sure.

The difference in price btw Sodasorb 4-8 and 6-12 is negligable, but not the diffenence btw 6-12 Sodasorb and 8-12 Sofnolime, except maybe in the UK...