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04-14-2013 10:00 PM


  • Houston TX
  • Mechanical Engineer
  • Geoff Marcek
  • Male


  • Posted in thread: Does UV light kill wild airborne yeast? on 07-15-2012 at 05:34 PM
    UVC (wavelength ~254nm) is very effective at killing bacteria, yeast, etc. fairly quickly. A
    wand like below could probably be used if you are having contamination issues, but diluted
    bleach would pro...

  • Posted in thread: PH meters on 01-30-2012 at 11:33 PM
    has worked really well for me so far. comes in a nice little case with the buffers. also
    replacement electrodes aren't too expensive

  • Posted in thread: PH meters on 12-04-2011 at 01:50 AM
    I use thispH and Conductivity Testers

  • Posted in thread: Keggle Drilling Problems on 08-05-2009 at 01:10 AM
    a knockout punch makes this job a little bit easier and will leave a clean
    hole.Punch,Knockout,Round,7/8 In - Knockout-Hole Punches - Electrical Tools - Hand Tools :
    Grainger Industrial Supply

  • Posted in thread: Beer in new Hampshire and Maine?? on 07-30-2009 at 02:47 AM
    i would definitely recommend woodstock inn if possible to make it there. also, the strange brew
    in manchester has a pretty good selection of beers. i would make sure to try the harpoon IPA,
    also both ...

  • Posted in thread: Sight glass trimming? on 07-28-2009 at 06:53 PM
    tubing cutter worked well for me

  • Posted in thread: anybody made 2 hole stoppers? on 06-28-2009 at 01:23 AM
    one thing i've seen for cutting balsa wood is to file the edges of a copper pipe really sharp,
    put it into a drill press and use high speed. might work for rubber too?

  • Posted in thread: Does anyone know of a good water tester? on 06-22-2009 at 01:11 PM
    i would be careful ordering anything from that place. i had to go through my bank to cancel an
    order there, and there were a few other similar complaints with the better business bureau i

  • Posted in thread: Distilled same as steril? Use with without boilding for washing yeast? on 06-10-2009 at 10:48 PM
    Distilled water has no mineral content, but I don't believe that distilled water is marketed as
    sterile. You can buy sterile water but it will probably be insanely expensive and is usually
    only used i...

  • Posted in thread: DIY Hop Filter Video on 06-09-2009 at 04:06 PM
    You could try installing the diptube without the mesh, then plug the diptube with your finger
    once the pump is primed.