Washing is the foundation of the entire detailing process. Start with the wheels so the car doesn't sit there wet as you scrub away. Rinse. Then start with the car; rinse first. Wash a few panels; rinse again. A few more panels; guess what, more rinsing. I don't know if you have noticed a pattern here, but rinsing is the most common step of the washing process. So how do you improve that? After all, it is just water right?One wash using de-ionized water from the CR spotless and you will instantly wonder how you ever washed your car with normal water again. Not only will it not spot as you rinse your paint, wheels, and windows, but the de-ionized water also generates significantly more suds from the same amount of soap.The unit is portable and convenient, and the resin for the tanks is refillable. All CR Spotless units come with a particle meter so you always know that your water is coming out spot free.This is one of those tools that make our job considerably easier, and probably the very first product that we recommend to all of our new customers. If there is one thing that you are going to get to make your car maintenance easier and more effective, this is definitely it.Depending on water TDS input, the DIC-20 provides approximately 300-1200 gallons of mineral-free, de-ionized water based on your input water quality. It consists of two 20" de-ionization housings that feature replaceable cartridges that simply slide into the watertight housings. The entire unit is mounted on a powder coated, rust resistant rolling cart that makes it convenient to move into position and store away when finished.