The Buck LIBRA is a low cost, high performance, constant flow personal sampling pump. Suitable for use in asbestos abatement, lead sampling and industrial hygiene sampling. Designed for use with asbestos and lead abatement, the LIBRA provides full constant flow compensation using 25 mm and 37 mm cassettes. Flow rate of 0.8-4 LPM. Comes with a rechargeable NiCAD battery pack system and built-in washable stainless steel filter. It is compact, lightweight, and quiet. Full one year warranty.