Equipment and Software / Re: Home Water Testing, Hanna's Test Kits and Colorimeters, and Palmer's Water« on: May 05, 2014, 05:48:42 AM »
From what I've seen in new construction, virtually all homes now include PEX tubing for their water supply. Having worked with PEX for a couple of years now, I can vouch for it as a great material. While most PEX fittings are brass, if you are piping up a RO system, using plastic fittings may be wise. Just recognize that those plastic fittings cannot have any strain on them.