Hello!  Thank you for the reply.  I did try to write the piece as dry as possible.  I have regularly used this product (fire department) and took notes along the way.  I went to the maker of Green Stuff Absorbents website to make sure my statements were correct.  The rest of the material is my own creation.  I added the three links at the end to verify what could be verified.  At what point do words become copyright infringement or advertising?  I was specifically trying to avoid those, but obviously failed.  Any advice?  Thank you again for your help.