Fluid Level Control in Tissue Chambers

A number of our customers have been using our Model P720 precision peristaltic pumps to maintain constant fluid levels in tissue perfusion chambers. To make this system work we provide you with a dual tube set which has been deliberately "unbalanced" -- one tube is shorter than the other. This shorter tube, when stretched around the pump’s rotor, will have a smaller cross section and thus will pump at a lower rate. Attach the slow tube to the chamber inflow, and the fast tube to the outflow, as shown. Use a beveled suction tube to prevent bouncing due to capillary action.

Features

• Unlike gravity-driven perfusion, solutions can be recirculated.
• The pump should not disturb sensitive electrical measurements because its circuitry has been designed to minimize electromagnetic radiation and it is powered by a 9V battery or wall-mounted DC adapter.
• The fluid level is not subject to pulsations because inflow and outflow are on the same rotor and therefore in phase.
• Flow rates up to 21 ml/hr are possible with the standard P720 model and 0.031" ID tubing, 75 ml/hr with .062" tubing. Use model P720/66 for even higher rates.
• The pump has a small footprint, measuring only 2.5"x4" (6.4x10.2 cm).
• To order, ask for a model P720 peristaltic pump with P720/TS-DBS031SDBSU tube sets .

U.S. Pricing