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Your questions - our answers!

What is the difference between the two different oxygen measuring principles?

The BlueInOne Ferm is based on a ZrO2 (Zirconiadioxide) sensing element, like a Lambda probe in cars. This technique shows a very low noise signal and is well proven for microbial fermentation processes. It needs a minimum oxygen (see minimum value of measuring range) and could detect oxygen up to 50 Vol.% in dry and wet gases gases. Unfortunately it could not be used in flammable or explosive gas mixtures.

The BlueInOne Cell is based on a galvanic measuring cell that could be used from 0 to 100 Vol.% O2. It needs a little bit humidity to not get dry. The BlueInOne Cell is adapted to cell culture and anaerobic processes.

How do I have to store the BlueInOne?

Both sensor types should be stored at 0 – 60°C in a clean environment.

  • BlueInOne Ferm: relative humidity lower than 75% (dry is the best)
  • BlueInOne Cell: relative humidity between 5 and 99% (not condensing)