Here is some Info about water purification of just about every type you could imagine. This guy talks about the Powersurvivor 35, but you might want to do a word search for Recovery Engineering to read the particulars, so you don't have to wade through everything to get to it. Lot's of great info if you are interested though. http://www.bagelhole.org/bagelhole.old/drafts/water_purification.html<br><br>I also found an alternative desalignator, though whether it would work with kayaks is a question. (the drag, etc, which they address on their FAQ section) but this too was kinda interesting.<br>http://www.yachtwatermaker.com/watermakers ffp.htm <br>* They do a comparison with PUR products but didn't include the 35 for some reason. ;)<br><br>This place, http://www.oceanplanet.com.au , has a product section on desalignators with an active date of 5/01/2001, but isn't available yet. You might want to check back to see if they'll be carrying PUR products, though from what I saw, Spectra has a hold on the Aussie market, so I doubt it.<br><br>This may be sold already, but on the off chance you are interested and it isn't, here is a link for a rebuilt 35:<br>http://www.lmmc.com/classifieds/gr4sal.html (ad is a little lower than midway down)<br><br>Hope some of that helps - Catherine<br><br><br><br>