This Barnstead Thermolyne Type 7200 Model S7225 Magnetic Stirrer is in used condition, has been tested and is guaranteed to be fully functional. These stirrers came from a local lab that had surplus inventory. As seen in last photo all stirrers show signs of use that does not affect functionality. We urge customers to view all photos as they show overall condition, included accessories, and useful information. Please feel free to contact us with any questions.