Omron Peak Air Peak Flow Meter (PF9940) vs Microlife Digital Peak Flow Meter (PF-100) - Clinical Comparison

Name: Microlife Digital Peak Flow Meter (PF-100)
Brand: Microlife
Price: 59.99 USD
Rating: 91

Compare Omron Peak Air Peak Flow Meter (PF9940) and Microlife Digital Peak Flow Meter (PF-100) side-by-side with clinical performance scores, FDA status, pricing, and expert recommendations

Select First Device

Select Second Device

Omron Peak Air Peak Flow Meter (PF9940)

86 /100

Microlife Digital Peak Flow Meter (PF-100)

91 /100

+6% higher overall score

Omron Peak Air Peak Flow Meter (PF9940)

Omron

Score

Price

$30

Evidence

Moderate

Buy Now Full Review

Top Rated

Microlife Digital Peak Flow Meter (PF-100)

Microlife

Score

Price

$60

Evidence

Strong

Buy Now Full Review

Performance Metrics

Omron Peak Air Peak Flow Meter (PF9940)

Microlife Digital Peak Flow Meter (PF-100)

Performance Metrics

Omron Peak Air Peak Flow Meter (PF9940)

Microlife Digital Peak Flow Meter (PF-100)

Measurement Accuracy

Measures the closeness of the device's readings to a known reference standard.

Adheres to standard mechanical accuracy tolerances, providing reliable tracking of PEF trends over time.

Utilizes a clinical-grade turbine sensor with jeweled bearings that minimizes friction, ensuring high precision that meets or exceeds ATS/ERS recommendations for spirometry.

+15% better measurement accuracy

Measurement Accuracy

Measures the closeness of the device's readings to a known reference standard.

+15% better

Ease of Use

Evaluates how intuitive the device and its interface are for the average user.

Purely mechanical operation with no setup or batteries required; highly intuitive for children and adults alike.

+5% better ease of use

The standalone design with a large LCD screen makes it exceptionally easy to use daily without needing a phone; however, the lack of Bluetooth means data syncing requires a physical USB connection.

Ease of Use

Evaluates how intuitive the device and its interface are for the average user.

+5% better

Build Quality

Assesses the durability, materials, and physical design of the device.

Constructed from durable, medical-grade plastics designed to withstand frequent use and regular cleaning.

Features a robust microprocessor-based unit and high-quality internal components designed for thousands of uses; the removable mouthpiece is easy to clean and sanitize.

+9% better build quality

Build Quality

Assesses the durability, materials, and physical design of the device.

+9% better

Value for Money

Compares the device's features and performance against its retail price.

One of the most affordable medical-grade meters on the market, offering strong clinical utility for its price.

Priced competitively at approximately $59.99, it offers dual-parameter monitoring and clinical accuracy that rivals more expensive Bluetooth-enabled models.

+2% better value for money

Value for Money

Compares the device's features and performance against its retail price.

+2% better

Clinical Efficacy

Omron Peak Air Peak Flow Meter (PF9940)

Microlife Digital Peak Flow Meter (PF-100)

Clinical Efficacy

Omron Peak Air Peak Flow Meter (PF9940)

Microlife Digital Peak Flow Meter (PF-100)

Peak Flow Accuracy

Measures the precision of Peak Expiratory Flow rate readings.

Maintains consistent calibration across its 60-720 L/min range, suitable for general home monitoring needs.

Tested against ATS Standard Waveforms with high fidelity, ensuring that PEF readings are reliable for identifying the onset of respiratory exacerbations.

+15% better peak flow accuracy

Peak Flow Accuracy

Measures the precision of Peak Expiratory Flow rate readings.

+15% better

Measurement Repeatability

Assesses the consistency of results across multiple identical maneuvers.

Internal spring mechanism provides consistent mechanical resistance, ensuring repeatable readings during daily use.

The digital turbine architecture eliminates the spring fatigue issues common in mechanical models, providing stable and repeatable readings over years of use.

+13% better measurement repeatability

Measurement Repeatability

Assesses the consistency of results across multiple identical maneuvers.

+13% better

Effort-Dependent Sensitivity

Evaluates how effectively the device captures the initial burst of a forced breath.

Effectively captures the peak of the exhalation, though it lacks the low-flow sensitivity of turbine-based digital monitors.

The low-inertia rotating vane reacts instantly to exhalation force, accurately capturing the true peak of the patient's respiratory effort.

+16% better effort-dependent sensitivity

Effort-Dependent Sensitivity

Evaluates how effectively the device captures the initial burst of a forced breath.

+16% better

Asthma Zone Management

Measures the effectiveness of the device in helping users track their asthma action plan zones.

Features manually adjustable green, yellow, and red zone indicators that stay in place during exhalation.

Includes an on-screen risk indicator that alerts users to potential respiratory incidents based on their current reading relative to their baseline.

+16% better asthma zone management

Asthma Zone Management

Measures the effectiveness of the device in helping users track their asthma action plan zones.

+16% better

Specifications

Specification	Omron Peak Air Peak Flow Meter (PF9940)	Microlife Digital Peak Flow Meter (PF-100)
Price	$30	$60
FDA Status	FDA 510(k) Cleared	FDA 510(k) Cleared
Clinical Evidence	Moderate Clinical Evidence	Strong Clinical Evidence
Clinical Recommendation	Recommended	Highly Recommended
Connectivity	N/A	usb

Value for Money

86 score / $30

286.8

value score

89% better value

91 score / $60

151.7

value score

Value score = Performance score ÷ Price × 100

Omron Peak Air Peak Flow Meter (PF9940)

Strengths

✓ Universal range covers both pediatric and adult flow requirements.
✓ Requires no batteries or power source for operation.
✓ Lightweight and highly portable design.
✓ High-contrast markings for easy reading of results.
✓ Washable and easy to maintain hygiene.

Limitations

× Upper limit of 720 L/min may be too low for high-flow adult subjects.
× No digital memory or automatic data logging.
× Relies on manual entry in a paper journal for tracking trends.

Microlife Digital Peak Flow Meter (PF-100)

Strengths

✓ Measures both PEF and FEV1 for a more complete picture of lung health.
✓ Large, easy-to-read LCD display allows for standalone use without a smartphone.
✓ Internal memory automatically stores 240 readings with date and time stamps.
✓ Removable and washable turbine sensor ensures hygiene and long-term accuracy.
✓ Meets strict American Thoracic Society (ATS) standards for measurement precision.

Limitations

× No Bluetooth connectivity; data transfer requires a USB cable.
× Tracking software interface is less modern than contemporary smartphone apps.
× Larger physical profile compared to ultra-portable Bluetooth-only monitors.

Expert Review Summary

Our clinical assessment and verdict for each device

Omron Peak Air Peak Flow Meter (PF9940)

Recommended

"The Omron Peak Air is a budget-friendly and durable mechanical meter that provides consistent Peak Expiratory Flow monitoring for families without the need for electronics."

The Omron Peak Air (PF9940) is a mechanical, Class II medical device designed for the domiciliary monitoring of Peak Expiratory Flow (PEF). It features a universal range of 60 to 720 L/min, which is specifically engineered to accommodate both pediatric and adult populations within a single device. The unit operates on a time-tested spring-and-piston mechanism that captures the maximum velocity of air during a forced exhalation maneuver. Our technical assessment indicates that the device meets standard technical requirements for accuracy and repeatability for home monitoring. The design is lightweight and reusable, featuring a sliding indicator that holds the measurement until manually reset. While the 720 L/min upper limit may be slightly restrictive for very high-flow adult males or athletes, it provides sufficient range for the vast majority of asthma and COPD patients. The device includes adjustable color-coded markers for manual zone management, assisting users in following their personalized asthma action plans.

Moderate Clinical Evidence

Read Full Review

Microlife Digital Peak Flow Meter (PF-100)

Highly Recommended

"The Microlife PF-100 is a robust, clinical-grade digital monitor that excels in measurement accuracy and standalone functionality for comprehensive asthma and COPD management."

The Microlife PF-100 / PF-100-1 represents a gold standard in digital peak flow monitoring, bridging the gap between traditional mechanical meters and modern app-based monitors. As an FDA-cleared Class II medical device, it is unique for offering an integrated LCD display that provides immediate readings for both Peak Expiratory Flow (PEF) and Forced Expiratory Volume in one second (FEV1), eliminating the mandatory reliance on a smartphone. The core of the device is a removable digital volume transducer featuring a low-inertia rotating vane supported on jeweled bearings. This turbine-based architecture uses infrared beam interruption to measure rotation speed, providing a highly linear and precise relationship with airflow. Clinical performance evaluation confirms the device meets American Thoracic Society (ATS) standards and has been validated against standard pulmonary waveforms. With a built-in memory for 240 readings and a dedicated risk indicator system, it provides users with immediate clinical context. While it lacks Bluetooth, the included USB tracking software allows for detailed data analysis and report generation, making it a reliable tool for long-term respiratory tracking in both pediatric and adult populations.

Strong Clinical Evidence

Read Full Review

Where to Buy

Verified purchase options and current availability

Omron Peak Air Peak Flow Meter (PF9940)

$30 MSRP

Atlantic Healthcare Products

$29.99

3-5 business days FSA/HSA eligible; free shipping on orders over $125.

Shop

Kroger

$24.99

Delivery or Pickup available Pricing may vary by store location; typically available for same-day pickup.

Shop

McKesson Medical-Surgical

$27.50

1-3 business days Professional medical supply listing; often used for clinic stock.

Shop

Manufacturer Site

HSA/FSA: Usually Eligible

Microlife Digital Peak Flow Meter (PF-100)

Top Choice

$60 MSRP

Microlife USA

$59.99

3-7 business days Official manufacturer store; 2-year limited warranty included.

Shop

Manufacturer Site

HSA/FSA: Usually Eligible

Important Purchase Considerations

• Prices shown are current as of the last update and may vary. Always verify pricing at the retailer's website.
• Some medical devices may require a prescription. Check with your healthcare provider before purchasing.
• Check with your HSA/FSA administrator for potential reimbursement eligibility and documentation requirements.
• Look for authorized retailers to ensure product authenticity and warranty validity.