S104 DOX Differential O2 Analyzer

Qubit Systems’ S104 Differential O2 Analyzer (DOX) is the world’s only patented differential oxygen analyzer with a resolution of ± 1 ppm O2 against a background of air. With the S104 DOX, researchers can measure real-time rates of respiratory oxygen consumption from tiny insects and photosynthetic oxygen production from a single intact leaf. The S104 Differential O2 Analyzer has the greatest dynamic range of any gas analyzer on the market and on a lower resolution setting it can measure O2 exchange in larger animals, even Human.

When used with a CO2 analyzer (S157) in an open gas exchange system, measurements of Gas Exchange Quotient allow non-invasive studies of respiratory metabolite determination and analyses of reductant flow in anabolic and catabolic reactions.

S104 DOX O2 Analyzer can be employed in human metabolic studies using the room, pod or hood calorimetry approach. For more information visit www.qubitcpx.com.

  • ±1 ppm oxygen resolution against air (that’s 0.0001%!)
  • Widest dynamic range of any oxygen analyzer
  • Easy calibration without special calibration gases
  • Separate analog signals for reference and sample pO2
  • Analog signals for differential pO2, absolute pressure, differential pressure, sample and reference cell temperature, instrument temperature

Sample O2 and CO2 data from mealworms

The S104 DOX Differential Oxygen Analyzer in true differential mode has ranges of ±100, ±300 and ±1000 Pa O2. Both the reference and sample oxygen sensors are monitored independently at the same time. An automated Reference – Sample feature provides measurements of any oxygen difference. By choosing the appropriate range setting, oxygen exchange can be measured with any animal.

Most high resolution gas analyzers require calibration with expensive standard gases, or with elaborate mixing systems to produce these gases. Over the years, calibration costs can far exceed the cost of the analyzer itself. The S104 DOX O2 Analyzer has an integrated calibration system that uses ambient air (simple pressure based calibration).  Calibration is simple but extremely accurate, and perfectly linear over the entire dynamic range of the analyzer and the “cal gas” – Air is freely available.

Dr. Bill Shipley, Département de Biologie, Université de Sherbrooke

“When purchasing a new gas exchange system for research purposes, I took a chance with Qubit systems; they claimed to produce a competitive system at almost half the price of those of more established companies. I am happy to say that I am entirely happy with my decision. I now have a reliable and versatile system that is just as accurate as the more expensive competition and, because it is modular, can be expanded as my needs evolve. Most importantly, I received outstanding service during all phases of purchase: conception, ordering, installation and continuing help.”Testimonial