At Micro Direct our mission is clear - to provide innovative, high-quality products at a fair price... and the customer support and great service you expect.Only Micro Direct offers a complete line of automated spirometers designed to meet your needs. Each utilize inexpensive, readily available mouthpieces and meet all ATS/ERS standards. All Micro Direct products are backed by a 30-day money back guarantee and supported by our team of experts.You can make a purchase on-line using our secure shopping cart or by calling us direct at 1-800-588-3381. The menu on the left is always accessible and gives you direct access to all areas of the site.Thinking of adding spirometry to your practice? Click here for important information.