Here is another source for filters. They offer GSA pricing--but still rather spendy. http://www.ergomart.com/FLUORESCENT_LIGHT_FILTERS/F685T-8-Filter-Sleeves-dtl.htm Mark Sundlov, Site Supervisor Ronald Reagan Minuteman Missile State Historic Site 2010 ND Tourist Attraction of the Year 555 113-1/2 Ave NE, Hwy 45 PO Box 6 Cooperstown, ND 58425-0006 701.797.3691 Please consider conservation before printing this email. -----Original Message----- From: Museum discussion list [mailto:[log in to unmask]] On Behalf Of Rob Kent Sent: Monday, October 18, 2010 1:44 PM To: [log in to unmask] Subject: [MUSEUM-L] UV Filters for Fluorescent Tube Lamps A couple questions about filtering standard 48" fluorescent tube lamps for UV: 1. Can anyone provide a source for flexible Mylar UV filters that curl around fluorescent tube lamps? Gaylord and University Products both carry this product, but they cost about $6 each. I found another source out of Andover, MA called North Solar Screen that sell a similar product for $3.75 each. I was surprised by the high cost per filter and and would like to find out if these filters are available elsewhere for less. 2. Is anyone using fluorescent bulbs that have built-in UV blocking? I came across a product from GE called Ecolux covRguard that blocks all light wavelengths below 520 nanometers (the entire UV spectrum and some of the visible spectrum). These bulbs are also shatterproof. We're looking into the cost effectiveness of using a bulb with built-in UV blocking versus a regular fluorescent lamp with a separate UV filter, but I would like to know if the GE covRguard (or other similar product) works as described by the manufacturer. Thanks. Rob Kent Senior Collection Manager Chicago History Museum ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes). ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).