The 7.0.510.13 version of pH Scale is available as a free download on our software library. The actual developer of the free software is University of Colorado, Department of Physics. The most recent installation package that can be downloaded is 1.6 MB in size. Our antivirus scan shows that this download is malware free. The most popular versions among the program users are 7.0, 6.0 and 1.0. PH Scale lies within Education Tools, more precisely Science Tools.
From the developer:
Test the pH of things like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Visualize the relative number of hydroxide ions and hydronium ions in solution. Switch between logarithmic and linear scales. Investigate whether changing the volume or diluting with water affects the pH. Or you can design your own liquid!
You may want to check out more software, such as Stamps.com USB Scale Reader or Neevia PDFresize/scale, which might be similar to pH Scale.