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Hey Karl, We use Head Red & Roll cleaner at IU/MDPI. We clean the rollers 1xmonth at minimum, but more frequently when needed. It works very well and has not dried out the rubber. http://www.precisionmotorworks.com/shop/contents/en-us/d14.html -- Melissa Widzinski Audio Preservation Engineer Media Digitization and Preservation Initiative <https://mdpi.iu.edu/> Indiana University On Wed, Jul 3, 2019 at 4:03 PM Lou Judson <[log in to unmask]> wrote: > IPA? You wash them in beer? That was just my first thought. Isopropyl > Alcohol is abbreviated IPA? First I heard that. > > International Phonetic Alphabet? > > Innovative Products of America (IPA®) is an Original Equipment > Manufacturer specializing in the development of innovative tools and > equipment since 1991. > > so much for the googlenet. > <L> > Lou Judson > Intuitive Audio > 415-883-2689 > > > On Jul 3, 2019, at 12:12 PM, Karl E. Fitzke <[log in to unmask]> > wrote: > > > > I've been warned off of IPA in the past, being told it could prematurely > dry out rollers. Not hard to imagine if used a lot. It is valuable to > hear you've had success at your rate of use, Shai. >