Casella CEL: dust monitor
The Microdust pro from Casella CEL is the latest in a range of particulate measuring instruments. The hand-held, real-time dust monitor can graphically present variations in dust concentration on a real-time scrolling graph. It features software routines for zero and span calibrations, which eliminate the need for manual adjustments and trimming tools. Casella CEL, Inc., Amherst, NH.