I believe Gander Mtn has the InvizX, I've tried the carbon Pro and did not like it - this statement always causes controversy but more people agree than disagree. And I have never really heard it is impervious to chemicals - only to water in fact a dupont brand name is "Viton" a fluro elastomer (they call flurocarbon) and I deal with viton all the time and it can't be used on some chemicals due to chemical attacks. So with that sparse knowledge - couldn't that deem that some water based line conditioners may not penetrate???? Probably in my opinion