Blue 1/4" Polypropylene RO Tubing

Polypropylene Tubing for Reverse Osmosis Systems Compatible with all RO/DI systems that utilize 1/4" RO tubing. The 1/4" measurement is the outside diameter of the tubing and will work with all 1/4" Push-Connect fittings. Blue RO Tubing is commonly used to distinguish filtered water from raw source water. On most reverse osmosis systems the blue tubing will start immediately after the membrane.