Remineralization Cartridges: Thoughts?

[rayjay]

From the article, "The pH of highly purified water is not accurately measured by test kits, or by pH meters."
That doesn't mean there is no pH value, just that we have no method of measuring it and knowing the true value. Whatever reading you get with any of our methods of testing pH, it may or it may not accurately reflect the true value.
What method do you use that other hobbyists have access to that will definitely give a true reading?