For 35+ years A. P. BUCK, INC. has manufactured the most advanced and innovative instruments for indoor air sampling.We supply air sampling pumps and calibrators for industrial hygiene, indoor air quality, occupational health, environmental, health physics and safety disciplines. For more information on our product lines just click on the link that interests you.


Buck Libra Plus Series
Category Category
Libra Plus™ Series

The Libra Plus series was introduced in early 2005 to include new patent pending technology. These pumps display flow rate, elasped time and accumulated volume of the sample. Each have built-in turn off timers and utilize high powered Nickel Metal Hydride battery packs. Advanced circuity allows for longer sampling times on a single charge of the batteries. In the case of the LP-5 pump, it runs 20+ hours at 2 LPM with a 37 mm 0.8 micron MCE filter cassette. Improved version of the Libra Plus LP-5 has higher back pressure capability, up to 50"of w.c at 2 LPM. They are the quietest pumps on the market by far.

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5-PK Libra Plus Pumps
5-PK Libra Plus Pumps
230 V Units
230 V Units
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Buck Libra Plus LP-1 120V pump Kit
Flow range 100cc/min - 600cc/min.
Buck Libra Plus LP-20 120V Pump Kit
Range 5.0 to 20.0 LPM
Buck Libra Plus LP-12 120V Pump Kit
Range 3 to 12 LPM

Buck Libra Plus LP-5 120V pump Kit
Range 5.0 to 5000 cc/min Increased Back pressure capability, up to 50" w.c @ 2LPM
Buck Libra Plus LP-7 120V Pump Kit
Range 3 to 7 LPM

Buck Libra Plus Series

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