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We apologize this Instrument is currently | |
Please submit a request, we will notify you if another one comes in stock. Thank you! | |
![]() | Approved Vendor to many US, Canada, and EU Universities |
![]() | US & International Shipping |
- Stock: SOLD
- Brand: Sartorius Stedim
- Product Code: 61547
- Condition: Pre-Owned
For Sale Sartorius Stedim Biostat B Benchtop Bioreactor SU Univessel System, Twin for Cell Culture
This item has been recently sold. Please view the other available instruments on your right.
If you do not see what you need, let us know via the “Request Quote” form; we often replenish sold-out items.
- Fully Functional
- Serviced & in Stock
- Current Model
- Good cosmetic condition
- Technical sales consultation available
- WARRANTY
- Includes remote instrument setup and training session
Here is what you will receive:
- (1x) Sartorius Biostat B (twin) control tower Ref.: BB-8821050
- (2x) Univessel SU holders, Sensolux with connection cable p/n: DZ_VHC
- (2x) Agitation motor with/ attached cable and adaptors for the SU vessel
- (2x) 220W Heating Blanket
- (2x) Univessel SU Pressure Relief Unit
- (2x) Temperature sensor and cable
Please note: consumables, including single-use vessels, are not included.
This configuration is intended to be used with Sartorius single-use SU Univessel vessels
We have other Biostat B configurations that may better suit your application.
Sartorius Stedim Biostat B Bioreactor Controller Configuration for Both Sides:
Gas flow supply connections
| Gas flow control | 3 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 |
| (Gas-in) Supply ports | Air, O2, N2, CO2; Maximum 1.5 barg |
| (Gas-out) Sparge connection | C02: 0 - 100 ccm (MFC) N2: 0 - 100% via flowmeter (rotameter) 02: 0 - 1.50 lpm (MFC) Air sparger: 0 - 100 ccm (MFC) |
| (Gas-out) Overlay connection | Air overlay: 0 - 100% via flowmeter (rotameter) |
Controller peristaltic pumps
| Built-in Pumps: | 2 Watson Marlow 114, fixed speed (on|off controlled) pumps for feed | base |
| Rotation Range: | SUBS-A (5 rpm); BASE (44 rpm) |
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 1L–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 Univessel Glass Single-use Vessels | External heating blanket |
| Temperature control range: | up to 50 DegC |
| Heating capacity 2 L: | 200 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 Flow meter or MFC control) |
| Overlay Aeration control | Headspace line for Air (with Flow meter 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) |
(* 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:
- Temperature sensors
- PH and O2 sensors and sensor cables
- Stirrer options
- Vessel scale options
- Exhaust filter heaters
- Exhaust analyzers
Testing performed by our in-house service team:
The Sartorius Stedim Biostat B Bioreactor Controller passed all tests and was found to be fully functional:
- We tested the power to the system.
- We tested the operation of the touchscreen display.
- We checked the operation of all peristaltic pumps.
- We verified the functionality of agitation motors.
- We verified the communication and accuracy of temperature probes.
- We tested the communication and responsiveness of DO sensors using our calibration solution.
- We confirmed the proper operation of the heating blankets.
- We tested the functionality of gas-mixing components.
- We tested the function of the coolant circulation components.
Instrument Overview:
- The Sartorius Stedim Biostat B SU Univessel Twin System provides flexible twin-vessel control for parallel cell culture workflows.
- Can accommodate both glass and single-use stirred-tank vessels in one compact unit.
- Supports independent control for each vessel including pH, DO, temperature, agitation and gas flow.
- Features four gas lines with mass flow controllers for precise aeration, sparger and overlay mixing for cell culture demands.
- The single-use Univessels enable rapid, sterile setup and reduce cleaning burdens, streamlining disposable workflows.
- Biostat B-CC Twin is ideal for batch, fed-batch, and perfusion processes in benchtop settings.
Instrument Application:
- Parallel cell culture experiments
- Process development and optimization
- Small-scale production of biologics
The Key Features:
- Parallel cell culture in twin vessels
- pH, DO, temp, and gas flow monitoring
- Single-use or glass vessel flexibility
- Sparger and overlay aeration options
- Rapid sterile setup and changeover
- Streamlined cleaning and maintenance
Additional technical info:
Video Overview:
About us

How we pack

VIEW SOME OF THE CUSTOMERS WE HELPED HERE
Why do so many customers choose to order from us?

- 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.
500#
COMMON QUESTIONS AND ANSWERS BELOW
What are the steps you take to verify, service, and confirm the functionality of the Sartorius Stedim 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 to the system.
- We tested the operation of the touchscreen display.
- We checked the operation of all peristaltic pumps.
- We verified the functionality of agitation motors.
- We verified the communication and accuracy of temperature probes.
- We tested the communication and responsiveness of DO sensors using our calibration solution.
- We confirmed the proper operation of the heating blankets.
- We tested the functionality of gas-mixing components.
- We tested the function of the coolant circulation components.
What supplies do I need?
You will need the consumables starting out:
- Cell Culture Media & Buffers | Sartorius
- Univessel® SU - Stirred Tank Single-Use Bioreactor | Sartorius
Can I view the Sartorius Stedim 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 Stedim 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 to the system.
- We tested the operation of the touchscreen display.
- We checked the operation of all peristaltic pumps.
- We verified the functionality of agitation motors.
- We verified the communication and accuracy of temperature probes.
- We tested the communication and responsiveness of DO sensors using our calibration solution.
- We confirmed the proper operation of the heating blankets.
- We tested the functionality of gas-mixing components.
- We tested the function of the coolant circulation 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 Stedim 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 Stedim 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.

