Q-Box SR1LP Soil Respiration

The Q-Box SR1LP Soil Respiration Package provides the user with all of the materials required to measure soil respiration in situ.  Short term spot measurements in the field are possible with the

  • Product Name:Q-Box SR1LP Soil Respiration
  • Model:SR1LP
  • Maunufactor:Qubit
  • Country:CA

The Q-Box SR1LP Soil Respiration Package provides the user with all of the materials required to measure soil respiration in situ.  Short term spot measurements in the field are possible with the battery pack.  Soil samples can also be asessed back in the lab when placed in a flow-through chamber.

Soil respiration is measured as the rate of CO2 accumulation by the Q-S151 CO2 Analyzer.   In addition to soil respiration Q-Box SR1LP package allows measurements of soil temperature with the S132 temperature probe and water loss from the soil with the S161 Temperature/Relative Humidity sensor.  Soil moisture is measured with the S135 Soil Moisture Sensor.  The flow through the system is monitored by the Q-G266 Flow Monitor.  The Analog signals from all of the sensors and analyzers are converted to digital signals via two integrated LabQuest mini interfaces (6 channels).  Data is displayed, recorded and manipulated on a PC or Macintosh computer using Logger Pro software.


There are many other potential applications for Q-Box SR1LP package both in open flow and closed gas exchange systems.  For example, it can be used to measure CO2 exchange from any organism or sample maintained in a flow-through chamber.  In addition, it can be used to examine respiration or fermentation in aqueous suspensions when air or N2 is bubbled through the suspension and the outflow gas is analyzed using the CO2 Analyzer.  Provided that CO2 production rates are in the correct range, the package can be used to measure CO2 production of virtually any biological system.


  • Self contained gas analysis system for in situ soil respiration measurements

  • Measurements of CO2 exchange of any organism in a flow through system

  • Modular system with interchangable components

  • Housed in a rugged case for easy transport and field use


  • Soil Respiration measurements in situ (CO2 accumulation)

  • CO2 exchange measurements of organisms placed in the flow through chamber

  • Head Space measurements of CO2 (fermentation studies, bacterial respiration)


  • Q-P103 Gas Pump (1L/min no load)

  • G180 Soil Chamber with collar (10.2cm x 20cm high)

  • G115 Flow Through Chamber (3.8 x 20cm)

  • Q-S151 (0-2000 ppm) (Includes CO2 and H2O scrubbers)

  • S132 Temperature Probe

  • Q-S161 RH/Temperature Sensor

  • S135 Soil Moisture sensor

  • Q-G266 Flow Monitor (0-1L/min)

  • G122 Gas Bags Large (30L x 2)

  • A249 Battery Pack

  • C610 Two integrated LabQuest Mini interfaces

  • C901 Logger Pro Software

  • C404 Customized Setup Software

  • Q-Box Accessory Kit

  • Rugged water proof case housing all sensors and analyzers

  • Manual

  • individual power supplies for stand alone use of analyzers and sensors


  • RobertsonLM et al (2020) Geochemicaland mineralogical changes in magnetite Fe-ore tailings induced by biomassorganic matter amendment. Science of the total Environment 724:138196 

  • TomarU, Baishya R (2020)Seasonality and moisture regime control soil respiration, enzymeactivities, and soil microbial biomass carbon in a semi-arid forest ofDelhi, India.  Ecological Processes 9: Article number: 50 

  • PrasadS, Baishya R (2019)Interactive effects of soil moisture and temperature on soil respirationunder native and non-native tree species in semi-arid forest of Delhi,India. Tropical Ecology 60: 252-260

  • YouF, Dalal R, Huang L (2018)Biochar and biomass organic amendments shaped different dominance oflithoautotrophs and organoheterotrophs in microbial communities colonizingneutral copper (Cu)-molybdenum (Mo-gold (Au) tailings.  Geoderma 309100-110 

  • SmorkalovIA, Vorobeichik EL (2015)The impact of a large industrial city on the soil respiration in forestecosystems. Eurasian Soil Science 48:106-114 

  • LiX et al (2015) Establishingmicrobial diversity and function in weathered and neutral Cu-Pb-Zntailings with native soil addition. Geoderma 247-248: 108-116 

  • Eaton WD etal (2012) The impactof Pentaclethramacroloba on soil microbial nitrogen fixing communities andnutrients within developing secondary forests in the Northern Zone ofCosta Rica.  Tropical Ecology 53:207-214