Qubit Systems Inc. products

The S147 Rapid Response O2/CO2 Analyzer combines both a laser diode O2 sensor and an infrared CO2 detector. This flow-through analyzer is designed for measurements of rapid changes in O2 and CO2 such as those occurring  during O2 uptake and CO2 production from breath by breath measurements of human respiration.

The Q-Box RP1LP Low Range Respiration Package is designed to measure the metabolic rate of small animals such as insects, reptiles, amphibians, other invertebrates  and small mammals in an open-flow or stop-flow gas exchange system. Automatic calculations of VO2 and VCO2 are displayed in the software during data collection. The Q-Box RP1LP Low range Respiration Package can even be used for measurements of CO2 and O2 exchange in colonies of fungi, microorganisms or headspace above water with aquatic organisms. When combined with Qubit Gas Switching System measurements of respiration rates and RQ are possible on up to 7 organisms (8 channel system including reference).

The S157 CO2 Analyzer is a single-channel flow-through non-dispersive infrared CO2 analyzer that measures CO₂ in the 0 to 2000 ppm range with 1 ppm resolution.  The range can be extended to 0 – 1% CO₂ if requested. The CO₂ Analyzer is ideal for CO₂ exchange measurements with leaves, insects, small animals, or organisms with a low metabolic rate. It can also be used to measure soil respiration and for environmental monitoring. The S157 can be purchased as a stand-alone CO₂ analyzer with a built-in gas pump (S157-P), or a built-in gas pump and mass flow monitor (S157-PF).  All versions of the S157 have temperature control of the rugged case, making it ideal for field use.

The Q-Box RP2LP- High Range Respiration Package can be used to study metabolic rates via CO2 and O2 exchange in mammals,  and other animals with higher metabolic rates.  When combined with Qubit Gas Switching System measurements of respiration rates (VO2,  VCO2) and RQ are automated for up to 7 animals (8 channel system including reference).

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.

S158 CO2 Analyzer is a single channel non-dispersive infrared CO2 analyzer that measures CO2 in 0 to 10% range (standard) with better than 0.01% accuracy. Custom ranges from a maximum of 5000ppm to 10% are available. S158 CO2 analyzer includes built-in temperature control of the sensor for greater stability of the signal, especially under field conditions. This analyzer is ideal for CO2 exchange measurements in larger or more active animals and in situations where high CO2 fluxes may occur, such as fermentation processes.

S108 Absolute O2 Analyzer is the most flexible, accurate, and affordable oxygen analyzer on the market. It uses a fuel cell sensor that operates at ambient temperature, unlike power-hungry zirconium sensors that require an onboard furnace. The sensor incorporates acid electrolytes and a Teflon diffusion membrane. Measurements of pO2 are precise across the entire range from 0% to 100%. For animal and human respirometry, the S108 Absolute O2 Analyzer can be used with our S158 CO2 Analyzer to measure respiratory quotient. For respirometry in smaller or less active organisms, it may be configured in a stop flow or closed gas exchange system. Calibration is easy. All you need is dry ambient air (use an N2 zero gas for the most stringent measurements). Linearity is maintained across the entire dynamic range. We recommend using S108  with our C901 Logger Pro Software or other data acquisition software.

Qubit Gas Switching Systems (GSS) have been designed to work with Q-Box Packages to allow measurements of gas exchange from multiple samples with one set of gas analyzers. Our Gas Switching Systems allow monitoring of up to 8 different channels with a single Q-Box system such as Q-Box RP1LP Low Range Respiration Package, Q-Box RP2LP High Range Respiration Package, and up to 4 different samples with Q-Box NF1LP Nitrogen Fixation Package and Q-Box CO650 Plant CO2 Analysis Package. Qubit Gas Switching Systems allow multichannel measurements of respiration (VO2 and VCO2), nitrogen fixation, photosynthesis, and transpiration. Gas switching systems are available in standard and enhanced versions. Standard GSS is designed for open flow measurements only and enhanced GSS is designed for both open flow and stop flow measurements.