>Just work in a 37C room. So long as it's dry it shouldn't hurt anything. >You might want to pipe in cool air to your laser and pipe the exhaust out, >but that just requires a few metres of flexible air-conditioning pipe. >(Unless you prefer to use the laser to heat the room!) The temperature >here routinely reaches higher temperatures than that in summer and it >doesn't seem to hurt our computers or monitors. Our engineer designed a plexiglass box that fits over the microscope. He then coupled two blow-dryer heater/fan units to a thermocouple to make a heater. We can keep the box heated up to 45 degrees C without a problem. We've also successfully been able to pipe in gas mixtures to work with samples that need specific atmospheric conditions. Since the box encloses the microscope, it eliminates many of the heat-sink considerations that make other heaters useless or impractical. -- Charles Thomas Integrated Microscopy Resource Univ. of Wisconsin-Madison 1675 Observatory Dr. Madison, WI 53706 608-263-6288 Office 608-265-4076 Fax ** NOTE NEW EMAIL ADDRESS!! ** [log in to unmask] VISIT OUR WEB SITE: http://www.bocklabs.wisc.edu/imr/imr.html