The LP-1200 Hand Pump makes it easy to manually measure the presence of toxic and combustible gases. This hand-powered pump works seamlessly with RAE Systems colorimetric tubes. The ergonomic, durable device features a spring-less piston design and solid metal construction, and can be used even with multiple layers of gloves. A built-in counter keeps track of the number of strokes, providing a reliable way to draw 50 ml and 100 ml samples for accurate readings.