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I know of several labs where batteries of wine coolers are used, we as a small lab have one. Works fine. Of course also our rockimager works with peltier-based temp control, its effective, and vibration free. Flip -----Original Message----- From: CCP4 bulletin board [mailto:[log in to unmask]] On Behalf Of James Thompson Sent: Friday, March 09, 2007 19:11 To: [log in to unmask] Subject: [ccp4bb] wine coolers for crystallization? Anyone using wine coolers with peltier thermoelectric controllers (without auto defrost) for macromolecular crystallization in their home labs? I remember a tiny box using similar technology that once was sold by Hampton Research, but I can no longer find it. Is there any good reason not to use peltier-based cooling? The expense is very small compared to the incubators I've bought. An array of vibration-free wine coolers would offer multiple temperatures. Advertised are temperature swings under +/-0.5°C within useable ranges. Jim