MR System
Microscale measurements in gas tight glass chambers
MR sensor guide for safe and stable handling
Rack holds up to eight chambers (<4mL)
SensorTrace Rate for data handling and analysis

MicroRespiration System

Sealed system to measure O2, H2, H2S, N2O, NO, pH, Redox, and temperature metabolism

The MicroRespiration System is an excellent tool to measure minute analyte changes in closed chambers. This could be respiration rates of phyloplankton, H2S production in macrophages, or pH changes in bacterial suspensions. Read more...

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Ordering Information
Manuals & Videos
MicroRespiration System

Measure O2, H2, H2S, N2O, NO, pH, Redox and temperature metabolism in sealed systems

The two central features of the MicroRespiration System are gas tight glass chambers and protected microsensor.

The MicroRespiration System offers

  • Measurement of two analytes simultaneously
  • Oxygen MicroOptode sensor with automatic temperature compensation
  • View metabolic rates online and in real time
  • Sealed chambers in pressure equilibrium with environment
  • All materials in contact with sample are autoclavable
  • Protected stirring of fragile samples
  • Excellent for teaching purpose
MR-Ch with sensor

MicroRespiration Chambers

The glass chambers are designed to be completely sealed when immersed in water or sealed with oil. Samples are placed in the chambers and the analyte concentrations are measured through a thin capillary in the chamber lids with the MicroRespiration microsensor. The chambers are made in volumes from 400 µL to 400 mL. You can have double chambers for measurement of two analytes simultaneously and injection lids to inject substrates to the samples while measuring.

MR-Ch on a row
Mr-Ch 400 µL with magnet
MR-Ch Double chamber
MR-CH Injection lid
MR-CH big
MR-CH 0-Cal

MicroRespiration Microsensors

The MicroRespiration microsensors have insignificant analyte consumption and a very low detection limit that allows for detection of minute concentration changes in the chambers. With the aluminum guide to protect the microsensor, you can be sure to correctly insert the microsensor through the capillary.

Microsensor Amplifier
With the Unisense Amplifier portfolio, you can choose any MicroRespiration microsensors for either single analyte or multiple analyte studies.

MR sensor

MicroRespiration Setup

The aluminum guide fits perfectly into the MicroRespiration Rack, which holds up to eight chambers (< 4mL). The MicroRespiration Rack guides the microsensor directly into the chambers making the MicroRespiration System easy to use and excellent for teaching purposes. The MicroRespiration Rack has separate stirring of the chambers ensuring homogeneity in the samples. Even fragile samples can be stirred due to a metal net separating the sample from the magnet.

MR2-Rack with sensor
MR2_Rack close up

SensorTrace Rate

The matching software SensorTrace Rate provides real-time and online PC inspection of data and enables measurement and calculation of analyte respiration and metabolism rates in several samples simultaneously. This software makes it possible for you to measure and analyze multiple analytes and multiple samples.

Rate 1
Ordering information
Ordering information
System components Product
Sensor All Unisense MR-Sensors and Electrodes
Amplifier Opto-F1 | Opto-F4 | UniAmp Multi-Channel | UniAmp Single-Channel
MicroRespiration Chambers MR-Ch Small (400-4000 µL) | MR-Ch Medium (20-50 mL) | MR-Ch Large (200-400 mL)
Other MR-Chambers MR-Ch 0-calibration (zero calibration) | MR-Ch injection (with injection lid - 4mL chamber only) | MR-Ch double port (for two sensors)
Software Software Suite including Rate Software
Rack MR2-Rack (for 8 MR-chambers)
Stirring MR2-CO (Stirrer controller) | Magnets (Set of 4 glass magnets)
Calibration Chamber CAL300


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Increased effects of internal alpha irradiation in Daphnia magna after chronic exposure over three succes⁠…
Alonzo, F. et all (2008), Aquatic Toxicology, vol. 87, 146-156
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Benthic respiration in a seep habitat dominated by dense beds of ampharetid polychaetes at the Hikurangi ⁠…
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Respiration of midges (Diptera; Chironomidae) in British Columbian lakes: Oxy-regulation, temperature and⁠…
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