Some of our competitors build their PID's like cell phones. That is, their lifetime is just over 2 years and spare parts are available only for several years beyond that. We can fix PI101's that were built 35 years ago. The PI101 was the first portable analyzer that was used extensively in reducing exposure to vinyl chloride, solving exposure problems at Love Canal (1st Superfund Site) and written in to the Superfind legislation. Note that Superfund was "the world's largest industrial hygiene program". That is all history now but the PI101 is still around and can still be fixed 35 years later. For more information click here.
A photo of the PI101 with its successor, the Model DL102, is shown in the photo below: