How many parameters can I control using a DASGIP or DASbox system?

DASGIP Parallel Bioreactor Systems provide comprehensive concurrent monitoring and control of process parameters. During the process run, events are logged together with up to 70 online process variables per bioreactor. In addition to the various DASGIP modules for monitoring and control, with DASware analyze users can integrate analytical devices provided by third parties. Seamless integration into the DASGIP or DASbox system even allows for closed loop solutions such as automated feeding strategies based on the current glucose concentration. Each process value can be used as a trigger enabling users to automate their process.

How many parameters can be displayed in a process overview in DASware control?

DASware control users can freely select all relevant process variables of all or selected bioreactors to be displayed in one chart. There are no limitations in the number of process parameters. When using DASware analyze, the displayed process parameters even include integrated data from third party laboratory devices, such as nutrient analyzers, mass spectrometers or Raman. The software features tables and trend graphs of all measured values. It continuously logs and stores all data and events. These data are immediately accessible for evaluation using e.g. Microsoft Excel. Advanced charting functionalities ease further data analysis and comparison of runs.

Do I need programming skills to automate my process in DASware control?

DASware control includes a set of easy to implement automation features without any need of programming. Profiles and triggers allow for various control strategies, all of them easy to select by mouse click with parameters entered manually or just copy-pasted. Users with programming skills and special control requirements, however, are free to run scripted control strategies and profiles as well.

Can I change triggers, profiles, cascades and scripts online in DASware control?

Set-points, profiles, cascades, and scripts are online editable in DASware control. Offline values and events can be entered during or after the run and documented with a time stamp. These time stamps can be set individually, e.g to meet the time, when the sample was taken. This provides users with great flexibility to interact with the control system and reconsider parameter settings even in highly automated processes. All events, including online changes, are recorded in a SQL Server database.

How are DASGIP vessels agitated?

DASGIP bioreactors feature powerful overhead drives with agitation speeds ranging 30 – 1,600 rpm. The DASGIP TC4SC4 controls temperature and agitation in up to four bioreactors. Users can individually define each outlet set-point as well as choose from different operation modes (e.g. continuous or interval agitation).

Does DASware control give any alarms in case of critical deviation?

Critical deviation of process parameters such as pH, DO, redox, and temperature are color-coded in the software and saved in the event log. DASware control professional additionally allows notification of supervisory control systems or mobile communication tools via SMS or e-mail.

Can you help adjusting my controller loop parameters in DASware control?

DASGIP controllers are PI controllers, which are configured with default controller parameters adapted to the type of vessel and default experimental requirements. Depending on special customer requirements it might be necessary to modify these parameters. Our service will be happy to help you finding the right settings.

How to calibrate a pH sensor in DASware control?

DASware control software allows for parallel calibration of all sensors used within one system with all data logged in the central database together with set-points, profiles, cascades, process values, user interactions and other events. Good maintenance will prolong the sensors' lifetime whereas high temperatures (i.e. during autoclavation), alkaline solutions (i.e. during alkaline deactivation), repeated etchings and improper maintenance will reduce the electrode's lifetime.

How reliable are exhaust data when working at benchtop scale?

Exhaust oxygen and carbon dioxide concentrations of multiple bioreactor units are continuously monitored with the DASGIP GA exhaust analyzer. Together with the mass flow measurement and the input values of oxygen and carbon dioxide concentrations, automatic calculation of oxygen transfer rate (OTR), carbon dioxide transfer rate (CTR), and respiratory quotient (RQ) is possible, permitting direct conclusions on the metabolic state of a culture. As the DASGIP GA considers humidity, volume, and total flow typical sources for inaccurate OTR and CTR data in small working volumes are eliminated.

Is it possible to automatically control the foam in DASGIP vessels?

All DASGIP vessels can be equipped with foam control components. All you need is a level/foam sensor connected to the DASGIP sensor module (e.g. PH4PO4L) and a feed line for dosing of the antifoam agent. Now foam formation can be detected by the level sensor and antifoam agent is automatically pumped into the vessel until all foam is collapsed. The DASware control software allows any feed line to be used for antifoam or level control. Since medium composition has a strong impact on the electrical conductivity of medium and foam, every conductivity-based level sensor needs to be adjusted to foam and medium conductivity. DASware control supports monitoring conductivity and free adjustment of the conductivity threshold.

What maintenance is required for Eppendorf bioprocess systems?

As all complex technical systems Eppendorf bioprocess equipment should be maintained regularly to keep all parts in good condition. This maintenance avoids cost-intensive down times and contributes to preservation of value. A complete preventive maintenance is recommended once a year. Additional maintenance actions are recommended to be executed by the user prior to every run or in regular cycles (e.g. every month). Our service will be happy to advice.

What do I have to consider when returning equipment for repair?

Equipment returned to Eppendorf for service or any other reason needs to be decontaminated first. Please fill out the Decontamination Form that you will find in the “Service & Support” section of the Eppendorf website and attach it to the package. Equipment which was sent without the completely filled form cannot be handled. This form must also be completed before any on-site service, whether covered under warranty or not, can commence.

What does your warranty cover?

Eppendorf issues a warranty of one year from the day of delivery on its products in accordance with our terms and conditions. Excluded are consumables such as cables, tubing, glassware, and sensors as well as used material.

Does Eppendorf offer bioreactor training?

We highly recommend a training at the customer’s site for all new customers. Besides this initial training, Eppendorf also offers individual trainings adapted to the user’s requirements like training of new employees or advanced training/recapitulation for employees already having experience with DASGIP or DASbox systems. All trainings are performed at the customer’s site using the customer’s equipment to have the training focused on the customer’s demands. The structure and methods of the training can be chosen to the customer’s requirements from general overview to detailed sessions on specific products or issues. Training in small groups is as possible as personal guidance.

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DASbox^® Mini Bioreactor System

BioBLU c and BioBLU f Single-Use Bioreactors for small and bench scale cell culture, stem cell, and fermentation applications.

Product Information

With small working volumes, compact design and advanced control and information management options the Eppendorf DASbox Mini Bioreactor System addresses demands in research and early process development. Combined with the DASware Software Suite it is an optimum tool for Design of Experiments (DoE) approaches as well as standardising and streamlining process development.

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Product Information

Technical Data

Applications

Features

The DASbox is a unique mini bioreactor system suitable for microbial and cell culture as well as stem cell applications. It is designed as a 4-fold system with up to twenty-four parallel operating bioreactors. With working volumes of 60 – 250 mL the DASbox is the optimal tool for advanced process development and Design of Experiments (DoE) applications. All critical process parameters can be precisely controlled. Liquid-free temperature control and exhaust condensation satisfy users with easy handling.
In addition to using industry standard glass bioreactors, the DASbox can be equipped with Eppendorf BioBLU 0.3 Single-Use Bioreactors, all fully instrumented single-use mini bioreactors.

Specifications	DASbox^® Cell Culture	DASbox^® Cell Culture Single-Use	DASbox^® Microbiology	DASbox^® Microbiology Single-Use

Application	Cell culture	Cell culture	Microbiology	Microbiology
Number of parallel units	Up to 24	Up to 24	Up to 24	Up to 24
Software	DASware control, other DASware optional	DASware control, other DASware optional	DASware control, other DASware optional	DASware control, other DASware optional
User Interface	Process computer with monitor	Process computer with monitor	Process computer with monitor	Process computer with monitor
Typical power consumption (4-fold system without process computer)	168 W (at 230 V)/ 154 W (at 115 V)	168 W (at 230 V)/ 154 W (at 115 V)	168 W (at 230 V)/ 154 W (at 115 V)	168 W (at 230 V)/ 154 W (at 115 V)
Dimensions (W × D × H, 4-fold system without process computer)	30 x 70 x 49 cm (12 x 28 x 19 in)	30 x 70 x 49 cm (12 x 28 x 19 in)	30 x 70 x 49 cm (12 x 28 x 19 in)	30 x 70 x 49 cm (12 x 28 x 19 in)
Product weight	44 kg	44 kg	44 kg	44 kg
Typical weight	44 kg	44 kg	44 kg	44 kg
Bacteria/Yeast/Fungi	yes	yes	yes	yes
Mammalian/Animal	yes	yes	yes	yes
Insect	yes	yes	yes	yes
Interchangeable Vessels	yes	yes	yes	yes
Validatable	no	no	no	no
Stem cells	yes	yes	yes	yes

Bioreactors
Vessels	Glass vessels	Single-use vessels	Glass vessels	Single-use vessels
Sterilization	Autoclavable	Pre-sterilized	Autoclavable	Pre-sterilized
Total volume	350 mL	380 mL	350 mL	380 mL

Agitation
Drive	Direct overhead drives	Magnetic overhead drives	Direct overhead drives	Magnetic overhead drives
Speed ranges	20 – 2500 rpm	20 – 500 rpm	20 – 2500 rpm	20 – 2000 rpm
Impellers	Marine	Pitched-blade	Rushton-type	Rushton-type

Gassing
Gas supply	TMFC; overlay and/or sparger	TMFC; overlay and/or sparger	TMFC; sparger	TMFC; sparger
Standard gas flow rates	0.04 – 5 sL/h, 0.04 – 3.5 sL/h CO₂	0.04 – 5 sL/h, 0.04 – 3.5 sL/h CO₂	0.2 – 25 sL/h, 0.2 – 18 sL/h CO₂	0.2 – 25 sL/h, 0.2 – 18 sL/h CO₂
Standard gas mixing	Air, N₂, O₂ and/or CO₂	Air, N₂, O₂ and/or CO₂	Air, N₂, O₂ and/or CO₂	Air, N₂, O₂ and/or CO₂

Feeding
Feed lines per vessel	2 (standard)/ 4 (optional)	2 (standard)/ 4 (optional)	2 (standard)/ 4 (optional)	2 (standard)/ 4 (optional)
Standard feed rates (depending on tube diameter)	0.3 – 9.5 mL/h to 13 – 420 mL/h	0.3 – 9.5 mL/h to 13 – 420 mL/h	0.3 – 9.5 mL/h to 13 – 420 mL/h	0.3 – 9.5 mL/h to 13 – 420 mL/h

Monitoring and Control
Temperature control	Liquid-free heating and cooling (Peltier)	Liquid-free heating and cooling (Peltier)	Liquid-free heating and cooling (Peltier)	Liquid-free heating and cooling (Peltier)
Standard temperature range (at 25° C room temp.)	10 – 60°C	10 – 45°C	10 – 60°C	10 – 45°C
pH control	CO₂/base, and other set-ups	CO₂/base, and other set-ups	Acid and/or base, and other set-ups	Acid and/or base, and other set-ups
DO control	Cascade (O₂ concentration, gas flow rate), and other set-ups	Cascade (O₂ concentration, gas flow rate), and other set-ups	Cascade (agitation speed, O₂ concentration, gas flow rate), and other set-ups	Cascade (agitation speed, O₂ concentration, gas flow rate), and other set-ups
ORP (redox) measurement	-	-	Optional (select redox or level)	Optional (select redox or level)
Level/foam	Optional	Optional	Optional (select redox or level)	Optional (select redox or level)
OD measurement	Optional (DASGIP OD4)	Optional (DASGIP OD4)	Optional (DASGIP OD4)	Optional (DASGIP OD4)
Exhaust condensation	Liquid-free (Peltier)	Liquid-free (Peltier)	Liquid-free (Peltier)	Liquid-free (Peltier)
Exhaust analysis	-	-	Optional (DASGIP GA4)	Optional (DASGIP GA4)