![]() | Approved Vendor to many US, Canada, and EU Universities |
![]() | International Shipping |
![]() | Customer References Available |
![]() | Training and Installation Options Available |
- Stock: In Stock
- Brand: Sartorius
- Product Code: 66971
- Condition: Pre-Owned
For Sale Sartorius Biostat B Benchtop Bioreactor SU Univessel System, Twin for Cell Culture
- Fully Functional
- Serviced & in Stock
- Current Model
- Good cosmetic condition
- Technical sales consultation available
- CONTINENTAL US 120 DAYS WARRANTY & 60 DAYS INTERNATIONAL
- Includes remote instrument setup and training session
We are a trusted equipment source to many Fortune 500 companies, small/midsize companies, and universities
Below is how we ensure a smooth transaction:
- We price bioreactors very competitively, reflecting the extensive technical hours each one receives
- Our team is versed in these instruments and is happy to jump on a call (or email) to answer your questions
- We accurately verify what we sell, providing operational videos and detailed testing information
- Most bioreactors receive between 10 and 60 hours of technician time to ensure they operate properly
- We are well-versed in global logistics, having safely shipped various instruments to over 40 countries
- We offer professional post-sale technical guidance and optional instrument training
Here is what you will receive:
- (1x) Sartorius Biostat B twin main control tower for 2 vessels
- (2x) Univessel SU holders, Sensolux with connection cable
- (2x) UniVessel SU Heating Blanket
- (2x) UniVessel SU Safety Valve Station
- (2x) Vessel Scale with Control Interface and Serial Cable
- (2x) Agitation motor with/ attached cable and adaptors for the SU vessel
- (2x) External Watson Marlow 120U Pumps
- (2x) Temperature sensor with cable
- All Communication, Power, and Serial Cables
- (1x) Main Power cord
Please note: consumables, including single-use vessels, are not included.
This configuration is intended for use with Sartorius single-use SU Univessel vessels; we can make it work with autoclavable vessels. (Please Inquire)
We have other Biostat B configurations that may better suit your application.
Sartorius Biostat B Bioreactor Controller Configuration for Both Sides:
Gas flow supply connections:
| Gas flow control | 4 TMFCs (Thermal Mass Flow Controller), Precision: ±1% full scale; 5 Flow meters, Precision: ±5% full scale |
| Gas mixing option | 4-Gas mixing (Air, O₂, N₂, CO₂) with sparger and headspace outlet (Air/CO₂) |
| (Gas-in) Supply ports | Air, O2, N2, CO2; Maximum 1.5 barg |
| (Gas-out) Sparge connection | C02: 0 - 50 ccm (MFC) N2: 0 - 100% (Solenoid-Controlled Rotameter) 02: 0 - 50 ccm (MFC) Air sparger: 0 - 100 ccm (MFC) |
| (Gas-out) Overlay connection | Air overlay: 0 - 1.5 lpm (MFC) |
Controller peristaltic pumps:
Built-in Pumps: | 3 Watson Marlow 114, fixed speed (on|off controlled) pumps for feed | base |
Rotation Range: | SUBS-A (5 rpm); SUBS-B (5 rpm); BASE (44 rpm) |
External Pumps: | 2 Watson Marlow 120U Pumps with 114 Pump Heads, |
Rotation Range: | 0-200rpm |
Univessel SU Culture Vessel (Consumable: not included)
| Working volume range: | 0.6 to 2 L |
| Mixing: | (2) x 3-blade segment impeller 30° angled |
| Aeration: | L-sparger |
Motor drive:
| Drive unit: | 200 W motor for 1-10L Vessel |
| Stirrer shaft coupling: | Direct Coupling |
| Agitation ran ge with direct drive: | 20-2000 RPM (For 2L Single-use: 20 – 400 rpm) |
Temperature Control Module:
| Temperature control for Single-use Vessels | External heating blanket |
| Temperature control range: | up to 50 DegC |
| Heating capacity 2 L: | 220 W |
Controller digital connections/inputs (Click here to expand this section)
| Port Label | Typical Accessory / Sensor |
|---|---|
| Serial-A Scales connection(FWEIGHT), RS-232, M12 plug | Balance/culture vessel weight sensor (e.g., 60 kg/300 kg max) |
| Serial-B Scales connection (FWEIGHT /VWEIGHT), RS-232, M12 plug. | Substrate weight or vessel load cell for gravimetric feed control* |
| Serial-C UniVessel® SU Holder, BioPAT® ViaMass, RS-485, M12 plug | BioPAT ViaMass inline biomass sensor for SU vessels* |
| Temp Temperature sensor, M12 plug | Pt100 temperature sensor (0–150 °C, ±0.1 °C accuracy) |
| Thermostat (x2) Heating/cooling control return and inlet | |
| Heating blanket control inlet | Electrical heating connection to heating blanket for Univessel Glass Single-wall Culture Vessels |
| External Signal Input A/B (M12 plug) | Allows integration of analog signal inputs (0–10 V / 4–20 mA). |
| External Signal Input C/D (M12 plug) | Additional analog signal inputs for extended control or monitoring. |
| Exhaust (x2) Exhaust cooler control inlet/return | Cooling water loop for glass/single-use exhaust condenser |
| Sparger Aeration control | Sparger line for Air, O2, N2, CO2; (with Flowmeter or MFC control) |
| Overlay Aeration control | Headspace line for Air (with Flowmeter or MFC control) |
| Pump-B / Pump-C External peri-pumps for feed/acid/base/antifoam addition, M12 plug | Watson-Marlow 120 series pumps (speed-controlled, external)* |
| Stirrer (x2) Stirring motor drive and encoder feedback | Direct drive or magnetic coupling motors (e.g., Sartorius 200 W) |
| pH/Redox-A pH sensor or Redox sensor input, VP8 plug | Combined pH/Redox sensor (e.g., Mettler Toledo InPro series) |
| pO₂-A pO2 sensor input, VP8 plug | Optical DO sensor (e.g., VisiFerm DO, Mettler InPro 6800) |
(*Depending on the configuration of the device, the port may be present but not configured for operation. Configuration changes must be made by the manufacturer.)
Controller Weight/Dimensions/Power Requirements
| Power requirements | 120 V (±10%),60 Hz, max. power consumption 12 A |
| Dimensions (W x D x H) | 35×82.2×43 cm (14×32×17 in) |
| Net weight: | 55 kg (121 lb) |
Please note that, depending on the requested options, we may recommend a different bioreactor model that better suits your application.
Customization/Options:
- Glass autoclavable vessels (Please inquire for available stock and for us to reconfigure the system)
- Temperature sensors
- PH and O2 sensors and sensor cables
- Stirrer options
- Vessel scale options
- Exhaust analyzers
Testing performed by our in-house service team:
The Sartorius Biostat B Bioreactor Controller passed all tests and was found to be fully functional:
- We tested the power supply to the system.
- We tested the operation of the touchscreen display.
- We tested the communication with the Univessel SU Holders
- We checked the operation of all peristaltic pumps.
- We tested the operation of the Univessel SU pressure relief valves
- We verified the functionality of the agitation motors.
- We verified the communication and accuracy of the temperature probes.
- We confirmed the proper operation of the heating blankets.
- We verified the accuracy of the integrated scales.
- We tested the functionality of the gas mixing components.
Instrument Overview:
- Biostat B Bioreactor SU Univessel system enables dual parallel bioprocess control.
- Twin control tower supports independent operation of two single-use Univessels.
- Integrated gas mixing with Air, O₂, N₂, CO₂ via TMFCs and flow meters.
- Direct drive agitation with 200 W motors and adjustable speed range.
- External heating blankets provide temperature control up to 50 °C.
- Includes pumps, sensors, and digital interfaces for precise process monitoring.
Instrument Application:
- Mammalian cell culture process development
- Small-scale bioprocess optimization
- Parallel cultivation and condition screening
- Seed train expansion and scale-up studies
- Suspension cell growth and protein expression
The Key Features:
- Twin vessel control for parallel runs
- Supports single-use Univessel SU systems
- 4-gas mixing with TMFC control
- Direct drive agitation up to 2000 rpm
- External pumps for feed and dosing
- Heating blankets for temperature control
Additional technical info:
Video Overview:
About us

How we pack

VIEW SOME OF THE CUSTOMERS WE HELPED HERE
WHY DO CUSTOMERS MAKING CRITICAL LAB PURCHASES CHOOSE TO ORDER BIOREACTORS FROM US?
They want to ensure that the bioreactor controller has been thoroughly tested and responds to commands.
They want to know whether the sensors have been tested against appropriate standards or calibrated using appropriate tools.
They want to ensure the paired drive is correctly matched to the required vessel size and type.
They want to ensure that the vessel’s drive RPMs are verified against the tachometer.
They want to ensure that the bioreactor controller can detect all attached sensors.
They want to ensure that all peristaltic pumps are tested through their maximum RPMs.
They want to ensure that the mass flows have been properly tested using a NIST traceable standard.
They want peace of mind knowing it will be safely and professionally packed for shipping.
They want peace of mind, knowing their instrument is backed by a warranty from a company that can stand behind it.

- We have experience servicing and repairing these instruments.
- This instrument goes through all the described service steps before shipping. see the questions section below
- We offer detailed photos and videos of the instruments you buy.
- We are an approved pre-owned equipment vendor to many large US, Canadian, and EU Universities.
- We are an approved pre-owned equipment vendor to many Fortune 500 US and International Biopharma companies.
- Technical sales consultation available
- Remote installation and instrument operation training may be available.
- On-site installation may be available in the Boston Area (New England area)
- US or International shipping is no problem (see the shipping tab on how we pack and feel at ease)

- Warranty
- You get after-sales technical support
- Customer references are available
- The instrument will be fully functional!
- Smooth process from the initial quote to order fulfillment
This will ship via freight. Please contact us with your zip code to obtain a shipping quote.
COMMON QUESTIONS AND ANSWERS BELOW
What are the steps you take to verify, service, and confirm the functionality of the Sartorius Biostat B Bioreactor Controller?
We verify various instrument functions individually and together, performing necessary repairs or maintenance to bring the instrument to our quality standards.
- We tested the power supply to the system.
- We tested the operation of the touchscreen display.
- We tested the communication with the Univessel SU Holders
- We checked the operation of all peristaltic pumps.
- We tested the operation of the Univessel SU pressure relief valves
- We verified the functionality of the agitation motors.
- We verified the communication and accuracy of the temperature probes.
- We confirmed the proper operation of the heating blankets.
- We verified the accuracy of the integrated scales.
- We tested the functionality of the gas mixing components.
What supplies do I need?
You will need the consumables starting out:
Can I view the Sartorius Biostat B Bioreactor Controller in person at your facility or do a live Zoom demo before it is shipped to me?
We invite you to visit our facility for an on-site demo or feel free to request a virtual Zoom demo of the instrument you are interested in.
What about the warranty? Installation, training, maintenance?
Warranty Terms:
- The instrument comes fully warranted for both parts and labor.
- The customer should retain all packing materials during the warranty period.
What should I watch out for when buying a Sartorius Biostat B Bioreactor Controller used/pre-owned from another lab?
- Make sure the instrument is properly packed for shipping and will arrive safely. If the instrument is large, request to have it packed in a wooden crate.
- Confirm that there is no physical damage or any misaligned internal components.
- Ask what accessories are included.
- Ask how long the warranty is and what it covers.
Here is what our technical team tests so you can request something similar and ensure your instrument will be fully functional.
- We tested the power supply to the system.
- We tested the operation of the touchscreen display.
- We tested the communication with the Univessel SU Holders
- We checked the operation of all peristaltic pumps.
- We tested the operation of the Univessel SU pressure relief valves
- We verified the functionality of the agitation motors.
- We verified the communication and accuracy of the temperature probes.
- We confirmed the proper operation of the heating blankets.
- We verified the accuracy of the integrated scales.
- We tested the functionality of the gas mixing components.
We recommend inspecting the instrument in person or requesting a virtual demo; this will allow you to evaluate the condition and performance of the instrument you are considering purchasing.
Do you have a Sartorius Biostat B Bioreactor Controller on hand?
- This is a common model, and we generally stock multiple instruments, accessories, and many replacement parts to back up our warranty.
I found it elsewhere for less. What goes into your price?
We acknowledge that sometimes you can purchase this model instrument elsewhere, possibly for less.
Here are some of the reasons for our price.
- We may offer longer warranty terms.
- We cover shipping costs during the warranty period. (Customer is required to save packing materials for the duration).
- We have to have technical staff that can do the testing/repairs and after-sales support if there are any issues.
- We invest considerable time into the testing and service of each instrument we sell.
- We have to purchase various testing supplies (often expensive) to perform testing.
- We have to purchase any missing required accessories to make the instruments complete.
- We have to procure and stock service parts to support our warranty.
- We have extensive experience packing sensitive instruments. See the shipping section in the website menu for info on how not to pack.
- We guarantee that the instrument will be functional.
This procurement is for a University or College. Are purchase orders with NET terms accepted?
- If you are a US or Canadian customer, we are likely already a registered vendor in your University's vendor system. This would greatly expedite the process of PO approvals and get this instrument into your lab faster.
- POs are accepted from US and Canadian universities.
How fast will you ship?
- We can ship within a few days to two weeks. Shipping time depends on the current demand for our instruments. Members of our sales team will be able to offer current delivery estimates.
Will my instrument be insured during shipping?
- All instruments shipped within the USA and internationally are fully insured. This applies as long as we are the shipper and handle shipping arrangements.
- If the buyer handles shipping, then shipping insurance responsibility falls to the buyer; we highly advise that the buyer obtain shipping insurance from their carrier.
How do you pack? Have you packed and shipped Sartorius Biostat B Bioreactor Controller Instruments in the past? Do you ship Internationally?
Packing
- Most larger instruments ship in fully enclosed ISPM15-certified wooden crates with proper padding underneath, and the sides have moving components braced.
- Accessories are packed safely in boxes with padding and then safely packed inside the crate.
- We may not use a crate for local deliveries to save you money *if delivered by us.
- We often use “tilt’ & “shock” indicators on the crates to ensure the crate has not been excessively tilted and dropped where equipment may suffer damage.
- Photos are taken during the packing process to make sure nothing is missed.
USA/Canada Shipping
- Within the US and Canada, we will ship via selected freight carriers. We do not use low-price/high-damage carriers as we want the equipment to get safely to you.
International Shipping
- Internationally, we will only ship via Air Freight or Air Parcel (such as UPS or DHL), which provides reliability, no exposure to Ocean weather, and timely delivery.
We have extensive experience packing and shipping fragile instruments globally.
Our experience and process
- We have safely packed and shipped thousands of sensitive analytical instruments.
How much will I save buying it pre-owned, and is it worth it?
A lot…and it is undoubtedly worth it, and here is why. Feel free to ask for feedback from hundreds of customers who bought from us.
- You will pay less than half vs. buying a new instrument. Why not spend leftover funds on another instrument for your lab?
- You will get our standard warranty, plus, when available, an option to obtain an extended warranty agreement.
- Know that your instrument was tested and working the day it left our facility and is covered if there are faults.
- Get extra peace of mind by adding an extended warranty or service agreement when such an option is available.
Sustainability
- Well, this one is easy: buying a pre-owned instrument is great for the planet; you are reducing unnecessary waste, CO2 output, and water use that would be used during the manufacturing process.
I have more questions; I want to receive a formal quote.
Absolutely! Please give us a call (1-617-397-3486) or complete this form to get your questions answered or receive a formal Quote.

