Qubit Systems’ Q-S102 O2 Analyzer is configured for measuring oxygen concentration in a flow through gas exchange systems in 0-25% or 0-100% range with 0.21% accuracy. The O2 Analyzer also contains gas pressure sensor for measurements of total gas pressure at the O2 sensor. The Q-S102 O2 Analyzer is ideal for determining O2 uptake in organisms with high metabolic rates in an open flow system configuration. For organisms with low metabolic rate it can be used in a closed flow system where the rate of O2 uptake can be calculated from the slope of O2 decline in the system.
The Q-S102 O2 analyzer requires data interface with two analog signal ports and software to operate. We recommend our C610 LabQuest Mini data interface with C901 Logger Pro Software. Q-S102 has been developed from the S102 Flow Through O2 Sensor and is a key component of the Q-Box Packages for both research and teaching. The Q-S102 O2 Analyzer has a galvanic cell (a lead-oxygen battery) consisting of a lead anode, an O2 cathode, and an acid electrolyte. It also incorporates an O2-permeable Teflon FEP membrane with a gold electrode bonded to its surface. Oxygen diffusing through this membrane is reduced electrochemically at the gold electrode. A resistor and thermistor (for temperature compensation) are connected between anode and cathode. The output of the instrument is proportional to the current flowing through the resistor and thermistor and this is proportional to pO2 in contact with Teflon membrane.
Dr. Barb Vanderbeld, Biology Department, Queen’s University, Ontario, Canada
“We are currently using carbon dioxide analyzers and oxygen sensors to study the gas exchange characteristics of locusts subjected to a variety of treatments. For example, the students gained a great deal from, and enjoyed seeing – in real time – the effect of exercise on the respiration of their locusts. We were able to develop a number of very interesting biological questions that they were able to answer using the Qubit equipment. The system has enough built in flexibility to allow them to make many of their own reasoned decisions regarding experimental design, which enhances their understanding of the entire process dramatically. The equipment is easy to set up and very robust. The software is powerful and extremely user-friendly. I am already thinking of new ways to exploit the system for experiments next year.”Testimonial