I've been looking for a fast and low cost way to permanently mark PVC pipe. It must survive the harsh UV rays here in Arizona. Marking with label makers barely last a year. "Permanent marker" might last two years. Yet that damn Purple Primer used when cementing the pipes together never goes away. Ah ha! Why not use this stuff to mark the pipe!
If you are interested, please see
Your comments are welcome. All of us are smarter than any one of us.