Due to the shortage of distilled water in stores, I purchased this to make distilled water for my work. This works very well and it's very easy to set up. Make sure to have some citric acid on hand so you can clean the boiler every so often. Because you may have hard water buildup. I used a TDS meter to test the distilled water and was getting about 5 to 10 PPM so definitely works. And for reference, the regular tapwater where I live is about 300 PPM.