The 400F/B1 is our standard instrument-quality peristaltic pump for low flow rates. The 400F/B1 has a spring-loaded track, which gives superior tube life and flow-accuracy. The tubing occlusion can be adjusted to produce higher pressures. The pump is available with four standard gearmotors. Each one is extremely small in size and has low power requirements. The pump accepts continuous tubing with a 1.6 mm wall. The tubing is available in 6 bore sizes, allowing the user to precisely match the pump to the required flow. See page 21 for additional options.