Over the last few years, we have been noticing more and more ductless "fume hoods" in our labs. In general, we have tried to discourage their use on campus, but I suspect that the low installation costs are too attractive for many labs to pass up. I'm beginning to think that we need to develop some kind of support policy for their use. I'm thinking in terms of an annual certification of their air flow so that we can at least remind people regularly that the filters on this equipment need ongoing careful attention to make sure that they don't create bigger problems through neglect of the change out schedule. I wonder if any other campuses have gone through this exercise and has a policy we could model our work on? Thanks for any help. - Ralph Ralph Stuart, CIH Environmental Safety Manager University of Vermont Environmental Safety Facility 667 Spear St. Burlington, VT 05405 rstuart**At_Symbol_Here**uvm.edu fax: (802)656-5407
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