Stirred tank bioreactor Esco StirCradle™


Power supply
The Stirred tank bioreactor Esco StirCradle™ is ideal for research and development involving microorganisms or animal and plant cell cultures.

I. Specification Esco StirCradle™ microbial culture fermentation reactor

Powerful internal memory for data logs:

  • Real-time data logging
  • Up to 25 days of continuous recording with 1-minute or 2-minute intervals per recording
  • Zoom in/out option
  • Built-in USB port for saving .xls files to external storage for data analysis and reporting

Safe and durable work:

  • Glass bottles are made of materials PYREX (USA) or SCHOTT (Germany).
  • Rigid, heat-insulating, anti-acid and anti-alkali
  • The base and holder are made of stainless steel (SS316) which has undergone three hand polishing and electrolytic polishing (Ra <0.42µm)
  • The inner base of the flask is designed in an arc to eliminate standing water, making it effective for the cultivation of fungi or mycelium.

User-friendly interface:

  • Dynamic and interactive display for easy retention and reduced operator error
  • Real-time action with illustrative graphics effects
  • Real-time data display and recording

Safe operating data:

  • User access is divided into eight (8) permissions that provide security for research and development data or academic research

Easy setup and maintenance:

  • The system is made of stainless steel for rigidity and easy cleaning
  • Brushless and maintenance-free 750w AC servo motor
  • Easy to set up. Simply mount the servo motor on the guided motor shaft.
  • Light weight and easy to move

Ergonomic HMI display:

  • The angle of the HMI screen can be adjusted to provide a comfortable working environment for the operator

The heating plate is safe and easy to maintain:

  • The bottom heating plate has built-in overheat protection and won't get hot when misused
  • The size of the heating plate is compact, so it can easily fit into a medicine cabinet

Various propellers for all your needs:

  • The system can be equipped with 12 different propellers
  • Fan blades can be coated with non-stick coating if needed
  • 1-1,200 rpm operation provides a wide range of culture cutting forces
  • Patented suction down dispersion impeller increases dissolved oxygen

Flexible activities:

  • Six (6) sensor/transducer ports located on the head plate allow the operator to choose a configuration for the probe and sensor
  • Four (4) assignable peristaltic pumps can be specified for Acid, Alkaline, Food or Anti-foam related operations. These pumps can be set manually or automatically with adjustable speed

II. The advantages of stirred tank bioreactor Esco StirCradle™

Stirred tank bioreactor Esco StirCradle™
  • The patented design of the mixing system optimizes DO control during high-density culture
  • Can be used with oxygen concentrators and/or multiple gas devices to achieve the ideal gas mixture for cell culture
  • Vessel can be easily changed to suit different applications
  • Light weight and small footprint compared to similar competitor models
  • Patented chassis heat exchanger design to provide the best temperature control
  • Four (4) built-in peristaltic pumps (with option to add up to 3 more) with assignable functions.
  • Two built-in USB ports make it easy to save data online to external storage, eliminating the need for a dedicated computer.
  • Datalog can record up to 25 days with intervals of one (1) or two (2) minutes/s for all parameters.
  • 8-inch TFT full color touch screen for man-machine interface with easily replaceable panel
  • Up to 20 custom culture settings can be saved (with 50 culture conditions each)
  • Equipped with an easily removable stainless steel condenser for easy cleaning
  • Can be connected to downstream processing equipment to obtain high concentrations of the desired product
  • The flue gas analyzer can be connected to the internet for online monitoring
  • Free remote monitoring App viewable on smartphone, tablet, laptop or PC (requires static IP address)

III. Applications of Esco StirCradle™ mixer

  • Research and development
  • Proteomics
  • Laboratory scale of fermentation, cell or biopharmaceutical production processes.
***You may be interested in GMGA's ultra-low temperature freezer - Esco Vietnam:

IV. Specifications stirred tank bioreactor Esco StirCradle™


StirCradle 5L StirCradle 7.5L StirCradle 10L
Nominal Volume 5.0L 7.5L


Working Volume

1.3 ~ 4.0L 2 ~ 6.0L 2.5 ~ 8.0L
Tank N.W. 9 kg 10.5 kg

11.5 kg

Maximum Height (Consider Placing Autoclave)

460 mm (with condenser) 640 mm (with condenser) 570 mm (with condenser)
Maximum Outer Diameter 196 mm 220 mm

245 mm


Drive AC servo drive with automatic feedback system able to  compensate for speed and torque

1 ~ 1200 rpm (adjustable in increments of 1rpm)


Optical coupler

PID human-machine touch panel control

Mixing blades

Includes two sets of Turbine six-blade type mixing blade and one set of whipped wing. Other Impellers are optional

Touch screen HMI dynamic display

 Oxygen Transfer Rate

 350 mM O2/L/Hr or higher
Temperature Range

Cooling water +5 ? to 80 ° C ± 0.1 ° C, or when using an external cooling system +4 ? to 80 ° C. ± 0.1 ° C, rapid temperature changes 1 ? / min (25 ~ 45 ?)


PT 100Ω

PID human-machine touch panel control with automatic over-temperature protection


Flow Adjustment System Mass flow meter. A reserved second gas port is available for additional gases such as oxygen, nitrogen, ammonia and other special gases
Air Flow

0~10.00 nL/min


Quick release air sparging to minimize the bubbles and effectively increase the OTR value

0.2μm PTFE Millipore

Exhaust System

Filter 0.2μm PTFE Millipore

Stainless steel water-cooled condenser can be easily disassembled


Set / Display Range 0~14.00 ±0.01
Control Mode

PID human-machine touch panel control. Gas or liquid can be selected as agent (ex, ammonia or liquid ammonia).


Mettler Toledo / Ingold Type or Hamilton Type
DO Setting Range

0~100.0% ±0.1

Display Range

0~200.0% ±0.1
Control Mode

PID human-machine touch panel control with programmable commands


Mettler Toledo / Ingold Type or Hamilton Type (Can be shared)
Pump Control

Manual or automatic control with adjustable speed. Can be installed with five different sizes of silicon tubes (0.5mm, 0.8mm, 1.2mm, 3.6mm, and 4.8mm diameter).


0 to 100% speed adjustable, flow control 
The Overall Size of Wide





Power Supply

220VAC single-phase
Display Screen 

8 "industrial grade touch panel. TFT LCD. 65,535 colored


Compatible RS232C standard communication interface for PC link control (Remote control), can also be changed into RS422 or RS485
Record Output

2 USB ports for saving data into external memory

V. Video

***Detailed product specification sheet: StirCradle™ Stirred Tank Bioreactor.

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