This lightweight, low maintenance, high efficiency-linear oscillating pump has a sampling range of 3-33 LPM. It is excellent for use for sampling mold using all types of mold cassettes, as well as impactors. The D-2 is the best value on the market today for the IAQ market, having a long life of 35,000 hours of continuous use, with only 2 moving parts. It is extremely low maintenance, no lubrication is required and it is very quiet. It comes complete with a 5-30 LPM fully adjustable flow meter, tripod, six feet of vinyl tubing and has a built in handle and a switch for added convenience.