The Atmotube is a personal air pollution monitor designed to assist you in monitoring the air quality to which you are exposed. You and your medical professionals remain in charge of your health and medical decisions — the Atmotube merely provides information for your consideration.Users should be aware that the Atmotube has certain limitations, including: The Atmotube is not a medical device, nor is it a treatment for any health condition. The Atmotube is not a professional measuring tool; it provides estimates only. The Atmotube must be used according to specifications and the user guide; it is not appropriate for any uses which are not set forth in the specifications and user guide. Several other limitations apply. Website disclaimer to learn more.