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    Multi-position stirrersMulti-position stirrersMulti-position stirrersMulti-position stirrers

Multi-position stirrers

  • Ohaus - STMP4AL - STMP9AL - STMP4DG - STMP9DG
  • Independent LED displays for speed and time
  • Knob with 1-10 dial markings ( on non-digital models)
  • Cast aluminum housing


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STMP4AL

Model : STMP4AL

  • Capacity: 4 x 1L
  • Control: Analog
  • Dimensions: 4 in x 17 in x 11 in (970 mm x 432 mm x 279 mm) (HxLxW)
  • Synchronized and uniform mixing
  • Speed ramping feature slowly increases motor speed for enhanced coupling & improved stirring
STMP9AL

Model : STMP9AL

  • Capacity: 9 x 250mL
  • Control: Analog
  • Dimensions: 4 in x 17 in x 11 in (970 mm x 432 mm x 279 mm) (HxLxW)
  • Synchronized and uniform mixing
  • Speed ramping feature slowly increases motor speed for enhanced coupling & improved stirring
  • Microprocessor-controlled for precise speed regulation
  • Timer counts up or when programmed to a set time will turn off stirring & sound alarm when timer reaches zero
STMP4DG

Model : STMP4DG

  • Capacity: 4 x 1L
  • Control: Digital
  • Dimensions: 4 in x 17 in x 11 in (970 mm x 432 mm x 279 mm) (HxLxW)
  • Synchronized and uniform mixing
  • Speed ramping feature slowly increases motor speed for enhanced coupling & improved stirring
  • Microprocessor-controlled for precise speed regulation
  • Timer counts up or when programmed to a set time will turn off stirring & sound alarm when timer reaches zero

STMP9DG

Model : STMP9DG

  • Capacity: 9 x 250mL
  • Control: Digital
  • Dimensions: 4 in x 17 in x 11 in (970 mm x 432 mm x 279 mm) (HxLxW)
  • Synchronized and uniform mixing
  • Speed ramping feature slowly increases motor speed for enhanced coupling & improved stirring
  • Microprocessor-controlled for precise speed regulation
  • Timer counts up or when programmed to a set time will turn off stirring & sound alarm when timer reaches zero


Powerful Magnetic Stirrers available in either four or nine position capacities provide precise speed control that deliver repeatable performance.


Offered in both digital and non-digital models.

Unique Features Include:


• The 318 x 279 mm top plate accommodates up to 9 x 250 mL or 4 x 1 L flasks. The glass-filled nylon surface has a reflective white color, is chemical-resistant and minimizes unintended heating of samples.

• Speed ramping feature slowly increases the motor speed for improved safety and enhanced coupling. Avoids splashing, improves spin bar control and provides excellent low-end speed control.

• Digital models have touchpad controls for input of speed and time. Non-digital models have an adjustment knob with dial markings from 1-10. The microprocessor regulates adjustments throughout the range.


The 318 x 279 mm top plate accommodates up to 9x250 mL or 4 x 1 L flasks. The glass-filled nylon surface has a reflective white color, is chemical-resistant & minimizes unintended heating of samples.

Speed ramping feature slowly increases the motor speed for improved safety and enhanced coupling. Avoids splashing, improves spin bar control and provides excellent low-end speed control.

Digital models have touchpad controls for input of speed & time. Non-digital models have an adjustment knob with dial markings from 1-10. The microprocessor regulates adjustments throughout the range.






ModelSTMP4ALSTMP9ALSTMP4DGSTMP9DG
ControlAnalogAnalogDigitalDigital
Speed range60 rpm to 1400 rpm
Timer N/A N/A 1 second to 160 hours
Capacity 4 x 1 L 9 x 250 mL 4 x 1L 9 x 250 mL
Plate construction Glass Filled Nylon
Dimensions ( H x L x W) 4 x 17 x 11 in. / 10.2 x 43.2 x 27.9 cm
Plate Dimensions ( L x W) 12.5 x 11 in. / 31.8 x 27.9 cm
Net Weight 14 lb. / 6.3 kg
Power 120 V, 50/60 Hz
Power Consumption 75W 75W 90W 90W
Working Environment 41 °F – 104 °F, 80% RH*, non-condensing / 5 °C – 40 °C, 80% RH*, non-condensing

*RH = Relative Humidity