Motorized Micromanipulator



The MP-225 represents an economical alternative to the MP-285 and MPC-365. In 2002, production and design changes allowed us to produce this motorized manipulator as a more affordable alternative to the industry standart MP-285. While the MP-225 feature set is less comprehensive than the MP-285, it includes the most popular features with an efficient user interface. The mechanical design utilizes a miniature stepper motor and integral anti-backlash gear head. Pre-loaded ball bearing slides provide smooth movement throughout the 25mm of travel. The controller uses low-noise, linear-drive output circuitry identical to that found in the MP-285. The methodology for mounting pipette holders and headstages used with the MP-285 has been maintained in the MP-225 to allow for cross compatibility.

The MP-225 is designed primarily for positioning patch and intracellular recording pipettes. We have retained and refined the features most desired for this type of work. An extended version of the popular rotary optical encoder (ROE) is the sole input device available with the MP-225. Like the MP-285, the manipulator has a synthetic 4th axis for diagonal advancement of the pipette; 16 different angles are selectable via DIP switches. Speed and resolution of movement are easily selected with a multiple position thumbwheel, allowing fast/coarse movement and slow/ultra-fine movement in 10 increments. Two commonly used robotic movements have been incorporated for user convenience. A single button press can initiate a move to a Home position for pipette exchange or to a user defined Work position for quick location of the pipette near the recording location. A display on the ROE gives position location. As all controls are located on the ROE, the controller can be moved to a less accessible area of your setup and does not need to occupy prime space in an equipment rack.

As always, our technical support team is available to address your particular needs and answer all questions before and after your purchase.


  • Highly stable for experiments intolerant of pipette drift
  • Submicron (62.5nm) minimal resolution for fine movement
  • Convenient thumbwheel selects resolution/speed of movement
  • 25mm of motorized travel on all three axes
  • 4th axis for coaxial movement of pipette, angle selected by DIP switches on ROE
  • ROE button press actuates move to Home position for pipette exchange
  • ROE button press actuates move to Work position near recording location
  • Continuous display (in microns) of axes positions located on ROE
  • DIP switches on ROE select direction of movement produced by turn of ROE knob
  • Modularized, compact design easily adaptable to your setup
  • Universal mounting system for headstage or pipette holder
  • Mounting adapters included with manipulator


1in | 25mm on all three axes

Six microstep sizes selectable (um/ustep): 0.0625, 0.125, 0.25, 0.5, 1.0 and 2.0
Finer movement settings use the 62.5nm microstep size but fewer microsteps are commanded per encoder knob turn

Maximum Speed

Long Term Stability
1-2 um/hour maximum

Drive Mechanism
Integral miniature stepper motor anti-backlash gearhead

4in x 5.5in x 6in | 10cm x 15cm x 15.5cm
16in x 11in x 3.75in | 40.6cm x 28cm x 9.6cm

2.95lbs | 1.3kg
10lb 11oz/4.5kg

115/230 Volts
50/60 Hertz power line

RoHS Compliant

CE Certificate


Catalog Number Description
MP-225* Includes manipulator, table top controller unit, extended ROE, cables, rod holder, 4in dovetail extension, mounting adapter plate, screws, hex wrench, power cord and manual

Indicate right- or left-handed set-up when ordering


Catalog Number Description
285204 4″ dovetail extension
2852101 Mounting adapter plate
225RBI Rotating base for MP-225
285300 Right angle adapter
285305 Z-axis vertical extension
285310 Z-axis horizontal extension
BR-AW Rod holding clamp for XenoWorks® injectors
MP-ROD Rod holder
285HEA Hinged headstage mount
M100106 Flat side panel for controller (each)

For use with MT and MD series sta nds and platforms, or any surface with 1 inch centered holes

Tech. Information

MP-225 Operation Manual
Mechanical Drawings

Sutter Micromanipulator Comparison Chart