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Chris What quantity of HF does your facility discharge per month? Joe Joseph R. Passante, CIH, CHO Associate Director Chemical Hygiene Officer Environmental Health & Radiation Safety University of Pennsylvania 215.746.6550 On Nov 30, 2009, at 1:56 PM, Kohler, Chris E wrote: > We just installed an HF hood with plastic ducts and fan parts, etc. > No scrubbers or filters though. You might check with Sentry or > Captair and check their ductless fume hoods to see if HF is an > acceptable application. I have heard the filters are expensive and > you must be prepared to change them at the appropriate time. The > other option may be to use a Parr bomb with a Teflon liner. > > Chris > > -----Original Message----- > From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On > Behalf Of Joseph Passante > Sent: Monday, November 30, 2009 9:41 AM > To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU > Subject: [DCHAS-L] HF digestion safety > > Does anyone on this list have experience with proper exhaust design > for small scale digestion using 48% HF? The geochemistry researcher I > am working with anticipates evaporating 2 liters of concentrated HF > per month in a fume hood. > > I am interested in scrubbing technologies and if anyone has designed > local exhaust systems that do not involve a fume hood. > > Thanks > > Joe > > > Joseph R. Passante, CIH, CHO > Associate Director > Chemical Hygiene Officer > Environmental Health & Radiation Safety > University of Pennsylvania > 215.746.6550