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PSU-20i Orbital Shaking Platform

Orbital platform shaker PSU-20i is a benchtop multifunctional shaking unit.


The Grant bio PSU-20i is a powerful and efficient microprocessor controlled multi-functional orbital shaker providing all that is required – rotation, reciprocation and vibration – for thorough mixing in flasks, beakers, Petri dishes and other laboratory vessels.

  • Orbital motion, reciprocation and vibration functions all in one product
  • Reliable direct drive system
  • Fully programmable sequence of functions
  • Simple to set up and easy to operate
  • Interchangeable platforms, including multi-level platform option
  • Loads up to 8 kg
  • Orbital and reciprocating speed: 20 to 250 rpm
  • Reciprocal rotation: 30 to 360º turning angle
  • Vibration: 0 to 5º turning angle, programmable in a burst of 0 to 5 seconds
  • All mixing functions – orbital motion, reciprocation and vibration – can be set for continuous or timed operation, or be linked together in different combinations to ensure optimum and accurately repeatable mixing conditions for your application
  • Direct drive system
  • Brushless motor for longetivity
  • Powerful, reliable and exceptionally quiet motor –  combines 8 kg loading capacity with consistent even motion and quiet operation
  • Very easy to operate, with simple set-up of multi-segment programs via push buttons and the 2-line LCD status display. Microprocessor controls for making corrections without stopping the program.
  • Universal detachable platform can accommodate vessels of different shapes and sizes for maximum flexibility.
  • Optional flat platform PP-20 with non-slip mat accommodates low profile containers. Can be extended to create up to four levels to maximise the throughput per cycle.


Suitable for use in different laboratories in microbiology, chemistry, immunology, biochemistry and molecular biology.


Dimensions (h x d x w)130 x 410 x 410mm
Temperature range4 to 40ºC
Maximum load8kg
Orbit ø20mm
Speed (load dependent)20 to 250rpm
Angle (reciprocal mode)0 to 360º
Angle (vibration mode)0 to 5º
Display2-line 16 character LCD
Timer, with automatic switch-off1 minute to 96 hours
Motion timer (orbital/reciprocal modes)0 to 250sec
Motion timer (vibration mode)0 to 5sec
External power supplyInput AC 120-230V, 50/60Hz Output DC 12V
Power consumption40W (3.2A)
Input voltage12V dc


PSU-20i Orbital Shaking Platform


Part NoDescription
PUP-330Adjustable bars and two fixing levels. Dimensions*: 300 x 400 x 80 mm. Extra holding bars - HB-330
(2/3/4 level)
Flat platform with non-slip rubber mat. Dimensions*: 365 x 465 mm. Height between levels: 140mm
P30-100Platform with clamps for 30 x 100-150ml flasks. Dimensions*: 360 x 400 mm
P16-250Platform with clamps for 16 x 250-300ml flasks. Dimensions*: 360 x 400 mm
P9-500Platform with clamps for 9 x 500ml flasks. Dimensions*: 360 x 400 mm
P6-1000Platform with clamps for 6 x 1000ml flasks. Dimensions*: 360 x 400 mm
UP-168Universal platform for flasks clamps. Dimensions*: 360 x 400 mm
TR-21-50Adjustable tilt test tube rack for 21x 50ml tubes
TR-44-15Adjustable tilt test tube rack for 44x 15ml tubes

* Working area dimensions

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