The Watson-Marlow 120S/DM2 and 120U/DM2 pumps comprise a 400DM2 twin-channel pumphead powered by a 120 variable speed or automatic drive. The pumphead accepts 0.8mm wall, three-bridge manifold tubing in sizes from 0.13 to 2.79mm internal diameter. The pump gives flow rates up to 36 ml/min.
120 pumps have a compact footprint, saving valuable space in cleanroom, LAF and biosafety cabinet installations.
120U: 0.1-100 rpm in 0.1 rpm increments. Manual remote control or automatic control via 4-20mA or 0-10V inputs. Speed scrolling, priming and keypad lock.
120S: Manual control, 1-100 rpm in 1 rpm increments. Speed scrolling, priming and keypad lock.
Flow rates 0.0001 to 36 ml/min at 2 bar (30 psi).
- Compact footprint requires minimal benchtop space
- Superior speed control up to 1,000:1, ±1% set speed accuracy, repeatable flow
- 400DM2 two channel pumphead accepts three-bridge manifold tubing only
- Efficient and intuitive to use, requiring minimal key presses
- Smooth, wipedown case with no sharp edges to tear gloves and no bug traps. IP31 ingress protection
- Maintenance-free, brushless DC motor
- Three year warranty
Fermentation The 120 is the perfect pump for maximising yield in fermentation and cell culture applications. Ultra-compact and stackable for multiple feeds such as pH control, antifoam, nutrient and buffer addition, the 120 offers the ideal combination of size and technology to optimise your process.
Single-use systems The new 120 pump is perfectly suited to single-use systems where no contamination can be accepted. Error-free tube change takes only seconds.
Process validation The biopharm process requires accurate and repeatable pumping which is easy to validate. With an exceptional 1,000:1 speed range, the 120 delivers the flexibility and purity so vital to drug trials. A keypad lock secures your pumping parameters for constant and repeatable performance.
The twin-channel 400DM2 pumphead uses three-bridge manifold tubing. Ideal for ultra-low-flow metering. Available for 120S and 120U drives.