More Information
A reusable user piece that serves as a filter lock and spit guard that accepts the air you breath. Purchase additional user pieces for fast switching in back-to-back testing, or to perform different types of VO2 assessments.
See specifications for proper use.
Resting:
Used for Resting Metabolic Rate (RMR) assessments and for light walking. Ventilation Range 5-40 L/min
Medium:
Used for exercise testing for users with a common sized thoracic cavity. Ventilation Range 30-160 L/min
Large:
Used for exercise testing of professional high-intensity athletes or users with large thoracic cavities. Ventilation Range 40-220 L/min
We offer up to 3 different shipping options – You will be asked to select a shipping method at checkout. Shipping rates are determined by delivery location and shipping method and will calculated at checkout.
Shipping Dimensions: 3in H x 7in W x 7in L
See the Return and Refund Policy for eligibility and more information.


VO2 Master Analyzer
Break through training plateaus.
Go beyond conventional training methods and excel into the new era of personal assessment and physiology to maximize your training results.
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Automated Reporting
Guided metabolic & performance testing.
Our FREE easy-to-understand performance reports provide you with essential training zone metrics, VO2 Max, Heart Rate and RMR values, plus many others used in training optimization.
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VO2 Master App
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Achieve unparalleled portability by accessing live data through both the VO2 Master Manager app and the VO2 Master Garmin Data Field.
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Frequently Asked Questions
Users should use the medium user piece if their ventilation range is between 30-160 L/min. The large user piece is used in most cases by professional high-intensity athletes or users with a ventilation range 40-220 L/min
No, assessment reports are provided instantly at your request and are available for download FREE of charge.
Using our ‘Contact’ page, complete the form and select ‘Replacement Parts’ under the ‘Type of request’ drop down menu.
Yes, though you are only required to purchase additional consumables based on your frequency of use. All analyzers are required to be serviced annually at the owner’s expense.
Just Looking for Accessories?

Face Mask & Headgear
CAD $285
Easy to apply, autoclavable and comfortable face mask with an adjustable five-point headgear. Available in multiple sizes.

Face Mask Only
CAD $175
Easy to apply, autoclavable and comfortable blue Hans Rudolph face mask. Available in multiple sizes.

Headgear Only
CAD $110
An adjustable five-point headgear with user-friendly velcro tabs to ensure a leak-free seal with uncompromising quality and comfort.
Proven in the field.
From professional athletes to testing facilities, VO2 Master provides the insight required to help you reach your performance goals.
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