We have added a ton of used products to our website recently, all available at a discounted price. All of the used products that you see on our website have been inspected, and we promise that they will work like new. We have used ozone generators, monitors, oxygen concentrators, and ozone systems all listed at a great price and in great working condition. If there is a used product you are looking for, but don’t see on our website, please contact us, we’d be happy to try and find a suitable replacement for you.