Frequently Asked Questions (FAQ)
All users of bioreactor systems have questions, sooner or later. This is due not only to the technical aspects of the product, but also because of the many different ways to analyze and influence biological processes.
The FAQs listed here represent a selection of the questions that we receive most often. We look forward to even more. It's these questions that help us better understand the people who use our products and what their needs are. They also tell us that you use and have an interest in our products. Should you have a question that is not answered to your satisfaction here, don't hesitate to get in touch with us!
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Questions about DASGIP Technology
- What are typical applications for DASGIP Bioreactor Systems?
- How many bioreactors are operated simultaneously using DASGIP?
- How much space does a 4-fold bioreactor system require?
- How many parameters can I control using DASGIP System?
- How many parameters can be displayed in a process overview?
- Do I need programming skills to automate my process?
- Can I change triggers, profiles, cascades and scripts online?
- How difficult is it to modify a DASGIP System subsequently?
- How many speed controlled pumps do the DASGIP Reactors feature?
- Which temperature range can be controlled in a DASGIP Bioreactor?
- How many mass flow sensors are available?
- What is the benefit of the off-gas-analysis?
- How many ports do DASGIP reactors feature?
- Which working volumes are available using DASGIP Control System?
- How is the reactor protected against overheating?
- How are DASGIP vessels agitated?
- Can I integrate DASGIP with Historians & Supervisory Control?
- How can I harness data generated by Parallel Bioreactor System?
- Can I get remote access to a running process outside my lab?
- Are there any alarms in case of critical deviation?
- Why do I need calibration data sheets for the DASGIP BioLector?
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Technical Questions
- I can not log-in into DASGIP Control: what is the reason?
- Can you help me with my controller loop parameters?
- What can I do against the pH drift during longer experiments?
- How to calibrate a pH probe?
- How strong is the influence of temperature for my pH calibration?
- What is a cascade in dissolved oxygen (DO) control?
- What is 100%DO and what is the difference to 100V% oxygen?
- What calibration parameters do you recommend for a DO probe?
- Is it possible to receive a negative OTR in off-gas measurement?
- What are typical process variables to be controlled by triggers?
- How reliable are off-gas data when working at benchtop scale?
- Is it possible to feed continuously even at very low feed rates?
- How to clean Polytetrafluorethylen (PTFE) components?
- How to clean metal sparger?
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How to clean glas sparger?
Clean sinter glass sparger immediately after each use with a soft brush. To remove organic soiling like proteins, they can be submerged in hot ammonia or hydrochloric acid. Tetrachlormethane removes oil and lipid soiling. Hot concentrated sulfuric acid with an addition of nitric acid, sodium nitrate or potassium chromate removes other serious contaminations. Alternatively use aceton instead of 1M NaOH. Then flush with 70% ethanol to swamp out aceton. Afterwards flush with plenty of distilled water. Do not leave the solutions react on for several weeks, as the glass would be attacked. Then rinse the sinter material several times with demineralized water (DI) and dry at room temperature or in a drying cabinet with a maximum temperature of 100°C. Avoid concentrated phosphoric acid, hydrofluoric acid and alkaline solutions for cleaning, because they attack the material (cumulatively with increasing concentration and temperature) and therefore affect the operating life of sinter elements. Detergents containing surface-active agents are also unsuitable for the cleaning, because an easy removal by rinsing is impossible.
Please pay heed to the general safety advices when handling acid or health hazardous chemicals!
For more information contact service@dasgip.de or call +49-700-DASGIP-AG/+49-700-327447-24 - How to clean stainless steel components?
- Do stainless steel components bear any risk of corrosion?
- Is it possible to automatically control the foam in DASGIP vessels?
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General Questions
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Glossary