The Control 3389 variable-flow peristaltic pump has a 4.0 to 600 mL/min. output flow range for fluid or gas transfer using transfer tubing sizes from 1/50-inch to 1/4-inch inside diameter (ID). Its output is manually adjustable using a rotary dial, and a reverse switch changes the direction of flow. The three-roller design is self-priming, reduces flow pulsation, and prevents siphoning to eliminate the need for a check valve. It includes a pump head, 3 stainless steel rollers, polypropylene fittings, and 1/50, 1/16, 3/32, 3/16, and 1/4-inch ID silicone tubing. The unit's power supply accepts 115VAC, 60Hz input power and has a NEMA 5-15 plug. The unit also has a battery connector for portable use and accepts a 9 or 12VDC battery (sold separately). It meets the CSA Group standard for electrical safety. This metering peristaltic pump is suitable for a variety applications such as liquid chromatography, collecting fractions, pH/circulating fluids or buffers in baths, and moving corrosive materials.

H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Control Company manufactures laboratory supplies and equipment such as vacuum pumps and flow controllers, among others, under the Traceable brand. The company, founded in 1974, is headquartered in Friendswood, TX.