PEX/POLY confusion?????

A 2004 manu. had this white piping in it, I know about blue and red PEX but I contacted the home manufacturer and they told me this is also PEX. I also have been told of a reformulated polybutyl that is supposed to be ok. Does anyone know of an identification chart that has kept up with the changes??:shock:

kit plumb.jpg

Looks like PEX.
The brass fittings in combination with their crimp rings indicate this.
I’ve seen and used PEX in blue,red, and semi opague white colors.

Identifying problem pipes:

I appreciate the posts, but looking at the sites I am still looking a flexable pipe identification chart and does anyone know about the short lived reformulated poly?