The ALTAIR® pump probe is a rugged sampling accessory for MSA gas detection instruments. Capable of drawing samples from up to 100 ft (30m) away, quickly convert diffusion instruments for use in remote sampling applications. Visual inspection of filter and quick change components simplify maintenance rugged unibody construction provides unsurpassed durability and Li-ion battery ensures long run time even in cold weather. MSA Altair® Pump Probe, For Use With: ALTAIR® 4/4X Desktop/Vehicle Chargers, Rechargeable Lithium-Ion Battery Power Source, 250 Lpm Flow Rate, 100 ft Sample Draw Distance, -20 to 50 °C, 30+ hr Run