For my college ChemLab, I had to analyze a product of my choosing and I chose Zaino Bros.' Z7 Show Car Wash. There will be some more in depth stuff later, this is just the portion I have done so far:
Zaino Z7
For the Z7 test, I tested for pH, UltraViolet Protection, and surface tension interuption. Also I scanned for product remains after rinse.
pH = 7.0, dead even. This means that it is completely neutral, just as Zaino states in its advertising. This was true when prepared in solution with Distilled Water, as well as a water sample I took from the exact same hose I use to wash my cars with at home.
The UltraViolet protection in Zaino actually came out to an SPF factor of 45,
not 40. However, this protection diminished quickly (I suspect that this is only due to the trace ammounts of polish in the wash, that the polish itself would have higher durability rating.)
As far as surface tension interruption, the zaino did quite the job of beading up pure H2O after being rinsed and dried on a glass surface. The beading was however easilly interrupted by the use of some very diluted (.01% acidic by molar volume) distilled vinegar. Again, this likely due to the mere trace ammounts of polish in the wash.
One surprising fact however: There WAS a trace ammount of soap left after rinsing and drying the piece. I happened to have with me a bottle of Z6, so I tried using this out of curiousity to see if these trace ammounts would be removed - they were. (Z6 btw is 6.5 pH acidic.) These trace ammounts explain precisely why the surface looks so much better after a wash AND QD, instead of just a wash.
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