>>>>> "LW" == Lisa Wrischnik <wrisch@uclink4.berkeley.edu> writes: LW> I know that companies like "Culligan" will set you up with a LW> water softener that replaces cations with sodium, but I have LW> been told that these companies can also set up a DI system LW> that replaces with H+ and OH- (the guy I'm married to has one LW> of these to give him DI in his lab). May be worth the initial LW> investment for some people (I think maybe $300 to get started LW> and then paying for the replacement tanks every so often - LW> depending on your local hardness conditions). I can find out LW> more if anyone really cares ;). Lisa, I've never heard of this before. Could you tell me more? - -Carlos - -- Carlos E. Munoz Crystal Semiconductor Products Division cmunoz@crystal.cirrus.com Cirrus Logic, Inc. Work:(512)912-3126 "Quidquid latine dictum sit, altum viditur."