The most hazardous dust particles are too small to be seen. To determine the effectiveness of the collection system, we will use a relatively inexpensive laser particle counter, such as: http://www.dylosproducts.com/dcproairqumo.html | The most hazardous dust particles are too small to be seen. To determine the effectiveness of the collection system, we will use a relatively inexpensive laser particle counter, such as: http://www.dylosproducts.com/dcproairqumo.html |