This stuff is basically snake oil at best, potentially harmful at worst. Kids, we're talking 9th grade physical science here, did any of you stay awake during that class?
First: pH is rated on a scale of 0 to 14, 0 being strong acid, 14 being strong base, 7 being neutral. Acids are negatively charged ions, bases are positiv- ely charged ions. BOTH EAT METAL! When the two are combine they produce hydrogen gas, water, and salt (usually). Salt is not just table salt, it's a chemistry term for any substance produced between a base and an acid.
The most simple example is NaOH (Sodium Hydroxide) and HCl (Hydro- chloric Acid). This produces H20 (water) and NaCl (table salt). You can also have CaOH, AlOH, KOH, numerous others. These can combine with all sorts of acids including H2SO4, HSO3, HNO3, Acetic Acid (vinegar), etcetera! Think about all of those big rigs and the signs they have like "ACID" and "CORROSIVE". The bases are corrosive, hence the term corrosion for the name of that white stuff when Aluminum rims CORRODE!!!
Now that we have the basics of the chemistry down lets look at some other aspects of these reactions. Aluminum (Al) is very susceptible to all reactions being positively charge with 3 ions. This means it is very willing to combine with negatively charged particles. Remember, about 75%+ of your engine is Aluminum!
Also, being that Al is so willing to combine, it is very willing to combine with bases to create stable compunds. Al(OH)3 is very common, it's the most typical of the corrosions seen on cars. Having said that, why are you trying to make your coolant charged either way!?!
The only thing you should _EVER_ _EVER_ _EVER_ be putting in your cooling system is the manufacturers' recommended coolant! Now, this can be represented by the OEM part, or an over the counter replacement as well. Just make sure it's the right one!
There are a great many types of coolant out there now, nearly as many as there are ATF types! Some are __N_O_T__ compatible with others. I've had an AC Delco rep tell me to NEVER mix the Orange Dex-Cool with green Ethylene Glycol as they mix to create a very mild acid that will eat away the Aluminum parts in your engine. Makes sense now, doesn't it?
Hoe this helps!
-andy