On 2013-12-05 2:51 PM, Michael Hennebry wrote: > I wasn't planning to look for 99.9% pure isopropyl alcohol. I buy 99% isopropyl at Meijer Thrifty Acres (grocery store chain here in the midwest). http://i41.photobucket.com/albums/e273/Darr247/Electronics/198-ProofIsopropyl.jpg I think that bottle was about $1.50 (price tags are no longer required by law, so I'm not certain). I use Dow-Corning 340 as heat-sink paste, by the way... compared to Arctic Silver it's about 1/5th the cost and ~99.5% of its heat-transfer performance (and I've never seen it dry out like I have seen Arctic Silver do after a few years). e.g. 1oz - http://www.amazon.com/dp/B00D0HVYHI 2oz - http://www.amazon.com/dp/B00CB2K3LG There should be enough in that 2oz jar to do/redo dozens of CPUs (or any other component with a heat sink). Unless you do a couple every week, the 140g tube (http://www.amazon.com/dp/B00CAVTGNE) would likely reach its expiration date long before it's half gone.