Oxymax XL

Oxymax-XL is a special version of the Oxymax Deluxe System that has been configured for use with large subjects. Oxymax-XL supports air supply flows from 1000 to 15,000 LPM, making it useful for animals ranging in size from large pigs to horses. Oxymax-XL supports one channel and can be configured for either positive or negative ventilation conditions. Unique to Oxymax-XL is its rapid response. Modifications allow operation at recording rates that make near real-time monitoring possible for subjects undergoing exercise testing.
Oxymax-XL systems are custom designed to suit the specific needs of large animal calorimetric research. Masks or chambers are supported. The system has extensive pneumatic filtering to keep debris from fouling the flow measuring devices. All flow meters employed in Oxymax-XL are NIST certified.

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Features

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Large animal capability
Supports mask or chamber environments
Auto-Tracking and correction of errors caused by changes in the testing environment
Simple operation with Experiment Checklist documents proper set-up and execution
User-definable inputs and user-defined parameters

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Oxymax F.A.S.T

New to the Oxymax line-up is our Frequent Analysis Sensing Technology. F.A.S.T systems employ a dedicated set of paired oxygen and carbon dioxide sensors for each chamber. Near continuous analysis can be performed in exercise and cyclic hypoxia testing where there is a need to accurately track rapid metabolic dynamics. Unlike systems with a single set of time multiplexed gas sensors, F.A.S.T systems provide timely data that is simultaneously collected from 1 to 8 animal enclosures.
Columbus Instruments has a long history as the world’s premier supplier of high quality lab animal open-circuit calorimeter systems. Oxymax is the bestselling device of its kind in the marketplace. It has a 25 year track record of reliable and consistent performance and is mentioned in hundreds of scientific research articles.

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Oxymax H

Oxymax-H is Columbus Instruments' non-clinical metabolic monitoring system. The instrument employs the same analytical grade gas sensors employed in the entire Oxymax line. Measurements are made by affixing a mask or canopy to the subject through which a continuous flow of air is drawn. The rate is selected so as to collect all expired gases from the subject. The flow is accurately metered by a precise controller that measures the exact mass of air being transported. A small sample is drawn from the effluent flow, dried, and presented to an electrochemical Oxygen sensor (paramagnetic and zirconia sensors also available) and a single beam non-dispersive Carbon Dioxide sensor. The resulting values are processed by the Oxymax H controlling software for presentation of Oxygen consumption, carbon dioxide production, respiratory exchange ratio, and heat.

Features

Oxygen Sensor Range: 19.0% to 21.25%
Oxygen Sensor Accuracy: 1% of reading, ±1 digit
Carbon Dioxide Sensor Range: 0% to 1.0%
Carbon Dioxide Sensor Accuracy: 1% of reading, ± 1 digit
Flow Meter Range: 45-450 Litres per Minute
Flow Meter Accuracy: 1% of reading, ± 1 digit

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CLAMS

Columbus Instruments Comprehensive Lab Animal Monitoring System CLAMS is the premiere system of its kind. Incorporating sub-systems for open circuit calorimetry, activity, body mass, feeding, drinking, food access control, running wheel, urine collection, sleep detection, body core temperature and heart rate in an optional environmental chamber: Oxymax/CLAMS is the one-test solution for simultaneous multi parameter assessment of 1 to 32 test animals.

Oxymax/CLAMS is constructed on a semi-custom basis incorporating parameters and features specific to your research. Any system can be expanded by way of more chambers and/or features at any time.

Features

Oxymax Sensor Technologies:
Paramagnetic O2 Sensor - Included as standard, measurement range is 0-100% with a response time of 90 seconds per cage.

Zirconia O2 Sensor - Part of the High Speed Sensing Optional, measurement range is 0-100% and when coupled with our dual tube High Speed Gas Dryer, response time is 50 seconds per cage. Multiple High Speed Sensor sets can be connected to the system to allow 2 or more cages to be measured simultaneously.

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OxyVal

The OxyVal is an eight-channel gas infuser intended for use as a validation instrument for open circuit calorimeter systems manufactured by Columbus Instruments. The infusion gas is intended to be high purity, 100% nitrogen or a primary standard grade mix of 20% carbon dioxide, balance nitrogen. From one to eight cages can be tested at a time using the Columbus Instruments Oxymax software to acquire the gas concentration data.
The gas infusion validation technique relies on mixing highly accurate gas mixtures at known flow rates with ambient air supplied by the calorimeter. For the nitrogen infusion case, the resulting cage gas concentrations will have a reduced oxygen concentration with respect to ambient and a largely unchanged carbon dioxide concentration. For the carbon dioxide mixture case, the oxygen concentration will be reduced and the carbon dioxide concentration will increase yielding validation data for both parameters. Either case will validate the source air input flow accuracy and the leak status of the channel. The carbon dioxide infusion test clearly yields a better validation but at the cost of more expensive and sometimes difficult to acquire primary standard gas mixture.

Features

Validates VO2, VCO2, DO2, DCO2, and RER
8 channel gas infusion
Adjustable gas infusion flow rate
Active Channel indicators
Calculation spreadsheet tool included.

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VO2/VCO2 : Oxymax Economy

The Columbus Instruments Oxymax Eco System is an indirect open circuit calorimeter designed to measure the metabolic performance of a single subject. The system monitors oxygen and carbon dioxide concentrations by volume at the inlet and outlet ports of a chamber, canopy, tent, or mask through which a known flow of air is being forcibly ventilated. The difference in gas concentrations along with flow information is employed to calculate oxygen consumption, carbon dioxide production, respiratory exchange ratio and heat. All data provided by the Oxymax Eco is corrected to an STP of 0° and 760 mmHg. The system presents data in normalized forms that are user-defined.
The Oxymax Eco can be configured for positive or negative ventilation of a single subject. Flows between 100 mL/Min and 15,000 LPM are supported. The instrument supports all of the facilities of the Oxymax Equal Flow System with the limitation of working with only a single subject. The Oxymax Eco can be upgraded to support multiple subjects and provides a low cost entry into calorimetric measurements while providing the possibility of adding features to meet increasing demand.

Features

Lowest cost open circuit calorimeter
Employs analytical grade gas sensors
Computer control and data collection
Economical System for Single Subject
Oxygen Sensor:
Electrochemical:
Range: 18.9% to 21.2% Resolution: 0.002% O2
Drift: less than 0.25% O2 / 24 Hours
Paramagnetic:
Range:0-100% Resolution: 0.002% of specified range
Drift: less than 0.06% of specified range per 24 Hours
Carbon Dioxide Sensor:
Range: 0%-0.8% Resolution: 0.002% CO2
Drift: (zero) less than 20 ppm CO2 / Hour
Drift: (span) less than 20 ppm CO2 / Hour. 

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VO2/VCO2 : Oxymax Equal Flow

The Columbus Instruments Oxymax Equal Flow System is an indirect open circuit calorimeter designed to simultaneously measure metabolic performance of multiple subjects that have similar ventilation needs. The system monitors oxygen and carbon dioxide concentrations by volume at the inlet and outlet ports of a chamber, canopy, tent, or mask through which a known flow of air is being forcibly ventilated. The difference in gas concentrations along with flow information is employed to calculate oxygen consumption, carbon dioxide production, respiratory exchange ratio and heat. All data provided by the Oxymax Equal Flow is corrected to an STP of 0°C and 760 mmHg. The system presents data in normalized forms that are user-defined.

Features

Simple operation with Experiment Checklist documents proper set-up and execution
Auto-Tracking and Correction of errors caused by changes in the testing environment
Supports 2 to 32 subjects of similar size
Adaptable to a wide range of subject size and testing
Oxygen Sensor:
Electrochemical:
Range: 18.9% to 21.2% Resolution: 0.002% O2
Drift: less than 0.25% O2 / 24 Hours
Paramagnetic:
Range:0-100% Resolution: 0.002% of specified range
Drift: less than 0.06% of specified range per 24 Hours
Carbon Dioxide Sensor:
Range: 0%-0.8% Resolution: 0.002% CO2
Drift: (zero) less than 20 ppm CO2 / Hour
Drift: (span) less than 20 ppm CO2 / Hour

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