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Thread: help with q science project

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    gtm's Avatar
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    Aug 2008
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    help with q science project

    I'm trying to help my son with a science project on ocean acidification and we're doing a demo using phenol red to show how adding CO2 drops the pH of the water. We have a slide showing the equations and I wanted to add a graphic showing the color scale for pH changes, meaning what's on the comparator that comes with our test kits. I googled like crazy and tried taking a photo, but no luck.

    Does anyone have a graphic or can point me to one that I can insert into a Powerpoint file? He really needs a good grade on this!

    Thanks, Gary
    15,000 gal. IG fiberglass pool w/ 1 hp Hayward Max-Flo and 250 lb. Hayward sand filter
    Located in St. Petersburg, Florida, and enclosed in a birdcage

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    Re: help with q science project

    I couldn't find a ph indicator scale, but Taylor does have some photos of their comparator tubes here and here.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
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    gtm's Avatar
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    Re: help with q science project

    Thanks Richard. I had actually found those, but by the time you blow them up to a good size in Powerpoint it doesn't work very well. But thanks much for trying, though. I also have my wife trying to do better than I managed to do with her camera. Thanks again ... Gary
    15,000 gal. IG fiberglass pool w/ 1 hp Hayward Max-Flo and 250 lb. Hayward sand filter
    Located in St. Petersburg, Florida, and enclosed in a birdcage

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