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Dr Gary Lawrence, Dublin City University

WPI are my preferred supplier for tissue and cell recording instrumentation. In my experience, WPI representatives have an excellent level of technical expertise and they have always responded in a timely manner with the most helpful, patient and instructive advice to aid the development of the o...
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Respiratory Monitor - Dual O2 and CO2 monitor

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GEMINI DataSheet
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The GEMINI Respiration Monitor measures CO2, O2, and respiration rate of spontaneously breathing or ventilated animals. It provides breath-by-breath readings for end-tidal CO2 and O2, and instantaneous respiratory rate (breaths/minute). Adjustable alarms are provided to monitor CO2 and respiratory rate.

This instrument uses the latest sensor technology for accuracy, stability,  and fast response. CO2 is measured with a temperature-controlled miniature infrared analyzer cell; O2 is measured with a new paramagnetic sensor cell. Respiratory rate is computed using the normal excursion of the CO2 signal, and is updated on each breath.

Simple set up and operation: The sample inlet tubing is connected to the endotracheal tube as close to the animal as possible. High and low alarms are set using a single knob, and the settings are stored in non-volatile memory so they do not have to be reset the next time the instrument is used. All measurements are displayed on the front panel LCD display, and are available as analog voltages for external recording. In addition, a serial port provides all the measurements in a simple ASCII format for collection by any computer.

Expandable: An open slot is provided for installation of any SYSTEM 1000 instrumentation module. Available modules include a cardiotachometer (Model CT-1000), blood pressure amplifier (Model PM-1000), plethysmographic respiration monitor for very small animals (Model RR-1000), and many other functions. This expandability allows you to configure a complete physiological monitor for use during surgery or extended experiments.

Applications: The GEMINI monitor provides complete information for respiratory status assessment for animals as small as rats. It comes complete with an accessory pack of inlet tubing, connectors, and moisture filters.




Farrell, E., Bates, M., & Pegelow, D. (2015). Pulmonary Gas Exchange and Exercise Capacity in Adults Born Preterm. Annals of the  …. Retrieved from

Haouzi, P., & Louw, A. Van de. (2015). Persistent reduced oxygen requirement following blood transfusion during recovery from hemorrhagic shock. Respiratory Physiology & Neurobiology. Retrieved from

Huxtable, A., & Smith, S. (2015). Intermittent Hypoxia-Induced Spinal Inflammation Impairs Respiratory Motor Plasticity by a Spinal p38 MAP Kinase-Dependent Mechanism. The Journal of  …. Retrieved from

Navarrete-Opazo, A., & Vinit, S. (2015). Daily acute intermittent hypoxia elicits functional recovery of diaphragm and inspiratory intercostal muscle activity after acute cervical spinal injury. Experimental  …. Retrieved from

Peltonen, G., & Harrell, J. (2015). Cerebrovascular regulation in men and women: stimulus-specific role of cyclooxygenase. Physiological  …. Retrieved from




CO2 Analyzer, complete with accessory kit

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CO2 Analyzer for Small Animals

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Our Clients Include:

University College London
Imperial College
University of Cambridge
University of Oxford

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