Originally Posted by
Ol Danl
Thanks again -- looked up the MSDS for Liquid Wrench, PB Blaster, and Aero Kroil. Under ph, for each of them, it said N/A -- so, obviously not an issue.
In these cases, I sure that the NA means "not applicable" rather than "not available". They would have no pH since they are neither acidic nor basic nor can even ionize.