#primary-nav .sub-menu a { font-size: 8px; }

MAX-IIa Metabolic Cart

metabolic carts for sale

The MAX-IIa Metabolic Cart is a a highly accurate, durable and streamlined systems offering our customers an economically priced alternative with the same service and quality that you come to expect from the AEI Technologies’ world renowned Moxus system. The MAX-IIa does not have this independent calibration feature but is otherwise identical to the MAX-IIa. The MAX-IIa is ideal for research, teaching and clinical institutions working with limited budgets. This system’s fast response time, exceptional accuracy and excellent stability guarantees data that you can depend on and it’s longevity ensures you will be able to obtain these results for many years.

Standard Features:

  • Paramagnetic Oxygen Analyzer
  • Infrared Carbon Dioxide Analyzer
  • Pneumotach Breath Volume Measurement System
  • Sample Pump and Flow Controller
  • Windows Software and Interface Package
  • 2 Channels for external analog instruments (0 – 10 Volts DC)
  • RS-232 Connection for select Treadmills and Ergometers
  • Heart Rate Interface with Polar monitor
  • 4.2 Liter Active Mixing Chamber
  • Efficient Nafion-based desiccant box with molecular sieve & silica gel indicator
  • Two-Way Breathing Valve and Tubing Connections with Headgear and Mouthpieces
  • Heavy-Duty Cart with articulating support arm
  • Calibration Gases: Two tanks with regulators of primary laboratory standard gases
  • Real time continuous Temperature, Humidity & Pressure Monitoring
  • 3 liter calibration syringe

Optional Features:

  • Laptop Computer or Desktop Computer with Monitor
  • System setup, calibration, and training
  • Canopy System for Resting Energy Measurement
  • Alcohol Burn Validation Kit Available
  • Extended Warranties Available
  • Mask kits
  • EKG monitors
  • Spirometers
  • Pediatric options available
  • Treadmills
  • Ergometers
Specifications for the Oxygen Analyzer

  • Accuracy: ± 0.03% O2 over 10 – 21% O2 range
  • Repeatability: ± 0.03% O2
  • Resolution: Digital Display ± 0.01 % O2
  • Operating Range: 0 – 100% O2

Specifications for the Carbon Dioxide Analyzer

  • Accuracy: ± 0.03% CO2 over 0 – 7% CO2 range
  • Repeatability: ± 0.03% CO2
  • Resolution: Digital Display ± 0.01% of CO2
  • Operating Range: 0 – 10% CO2

Specifications for the Pneumotach Flow/Volume Measurement

  • Flow Range: 0 to greater than 800 liters/minute
  • Volume Accuracy: better than ± 1.0% typical
  • Resistance to Flow: 2.8 cm H2O at 400 liters/min

Specifications for the Calibration Gases

  • E Size Cylinder, Primary Standard, 5% CO2 , 21% O2 ,Bal. N2; accuracy: ± 0.02% CO2 absolute, ± 0.02% O2 absolute
  • E Size Cylinder, Primary Standard, High Purity N2

Specifications for the Ambient Temperature / Pressure / Humidity Measurement

  • Temperature: ± 0.5 °C
  • Pressure: ± 1 mmHg
  • Humidity: ± 3% RH

MAX-IIa Testimonials

What made you choose AEI Technologies over other metabolic carts on the market?

We chose AEI Technologies because of their strong reputation for producing accurate, reliable, and user-friendly metabolic systems. As a new and growing Health and Human Performance (HHP) program at the University of Pikeville, we needed a system that could meet both instructional and research needs. AEI stood out for its quality, ease of use, and exceptional customer service, which made it the best fit for our department.

Can you talk a little bit about your application? How has the system improved or impacted your research, teaching, or clinical work?
The metabolic cart is being used in our Exercise Physiology and Exercise Testing & Prescription courses, giving undergraduate students hands-on experience with professional-grade equipment. It has significantly enhanced our teaching capabilities by allowing students to directly measure VO₂max, resting metabolic rate, and other key physiological variables. In addition, it supports our growing research efforts on exercise performance, conditioning, and clinical health outcomes that help bridge the gap between classroom learning and applied human performance research.

What has your experience been like working with AEI from purchase through installation and support?
Our experience with AEI has been outstanding. The purchase and installation process was simple and even though shipping of our treadmill was delayed, we were informed at every step in the process. The representatives were consistently responsive and helpful. Ethan Ibarra provided excellent support, he was knowledgeable, patient, and ensured that every question was answered and the system was fully operational before use. Customer service exceeded expectations at every stage.

Was there a specific AEI feature or spec that made a noticeable difference in your results or workflow?

The precision and consistency of the gas analysis, combined with the system’s easy-to-navigate interface, have made a noticeable difference in both teaching and data collection. The quick calibration and intuitive software have streamlined our lab setup time, allowing students to focus more on learning and interpretation rather than troubleshooting equipment. The system’s reliability has also improved the quality and reproducibility of our research data.

Michaela Wilson, Ph.D

University of Pikeville

–

What made you choose AEI Technologies over other metabolic carts on the market?
I chose AEI technologies primarily because of the customer service. I will say it was more expensive than the other carts I was looking at but the customer service set it apart. It has continued to set it apart while using it. Whenever I have a question or issue they are always willing to go above and beyond to help me.

Can you talk a little bit about your application? How has the system improved or impacted your research, teaching, or clinical work?
I am a dietitian so I use it a lot to help people find more answers. It can be useful for me to see non weight success in Eating disorder recovery for my patients. It is also a helpful learning tool for my ED patients to show them the impacts of disordered eating. It is also helpful for those who are struggling with their weight to find more answers.

What has your experience been like working with AEI from purchase through installation and support?
It has been great!! They are great at responding. If I have any issue they are a call/email/text away. They are efficient at replying and trying to fix any issue I have.

Was there a specific AEI feature or spec that made a noticeable difference in your results or workflow?

This one- I am not sure. In general I think having the machine sets me apart from other clinics in the area. It also helps me day to day in my own clinical work. I am very happy with my purchase overall.

Brianna De La Cruz MS RDN

Nourish & Flourish Nutrition

Frequently Asked Questions

1. What is the MAX-IIa Metabolic Cart used for?

The MAX-IIa Metabolic Cart is designed for measuring respiratory gas exchange during rest and exercise. It is commonly used for VO2 max testing, resting metabolic rate (RMR) assessments, cardiopulmonary exercise testing (CPET), exercise physiology education, clinical evaluations, and scientific research.

2. Who should choose the MAX-IIa Metabolic Cart?

The MAX-IIa is ideal for universities, research laboratories, hospitals, sports performance centers, and clinical facilities seeking a reliable, high-accuracy metabolic cart at an economical price. It is especially well suited for teaching, research, and routine metabolic testing.

3. What measurements can the MAX-IIa Metabolic Cart perform?

The MAX-IIa measures oxygen consumption (VO2), carbon dioxide production (VCO2), respiratory exchange ratio (RER), pulmonary ventilation, resting metabolic rate (RMR), and other respiratory gas exchange parameters used in exercise physiology and metabolic research.

4. What makes the MAX-IIa different from other metabolic carts?

The MAX-IIa combines high-precision gas analyzers, fast response times, long-term measurement stability, and user-friendly software in a cost-effective system. It delivers research-grade performance while remaining accessible for laboratories and educational institutions with limited budgets.

5. Is the MAX-IIa suitable for VO2 max testing?

Yes. The MAX-IIa is designed for accurate VO2 max testing and provides reliable breath-by-breath respiratory gas measurements for athletes, researchers, clinicians, and exercise physiology professionals evaluating aerobic fitness and exercise performance.

6. Can the MAX-IIa be used for teaching and university research?

Absolutely. The MAX-IIa is widely used in exercise physiology programs, kinesiology departments, and health sciences laboratories. Its intuitive software and dependable performance make it an excellent tool for both student instruction and advanced research projects.

7. What standard features are included with the MAX-IIa Metabolic Cart?

The MAX-IIa includes a paramagnetic oxygen analyzer, infrared carbon dioxide analyzer, pneumotach breath volume measurement system, active mixing chamber, Windows software, calibration equipment, heart rate interface, environmental monitoring, and a heavy-duty mobile cart for complete metabolic testing.

8. How accurate is the MAX-IIa Metabolic Cart?

The MAX-IIa delivers highly accurate and repeatable measurements using AEI Technologies’ proven oxygen and carbon dioxide analyzers. Its fast response time and stable performance help ensure dependable data for research, clinical testing, and exercise physiology applications.

9. What support does AEI Technologies provide with the MAX-IIa?

AEI Technologies provides comprehensive customer support, including installation assistance, application guidance, technical support, troubleshooting, and ongoing service to help laboratories maximize the performance of their metabolic cart system.

10. Why choose the MAX-IIa Metabolic Cart from AEI Technologies?

The MAX-IIa offers an excellent combination of research-grade accuracy, long-term reliability, outstanding customer support, and exceptional value. Backed by more than 50 years of expertise in respiratory gas analysis, it is trusted by universities, researchers, and healthcare professionals worldwide.