Omron Peak Air Peak Flow Meter (PF9940) vs Micro Direct MicroPeak - Clinical Comparison

Name: Micro Direct MicroPeak
Brand: Micro Direct
Price: 24.95 USD
Rating: 90

Compare Omron Peak Air Peak Flow Meter (PF9940) and Micro Direct MicroPeak side-by-side with clinical performance scores, FDA status, pricing, and expert recommendations

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Omron Peak Air Peak Flow Meter (PF9940)

86 /100

Micro Direct MicroPeak

90 /100

+5% higher overall score

Omron Peak Air Peak Flow Meter (PF9940)

Omron

Score

Price

$30

Evidence

Moderate

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Top Rated

Micro Direct MicroPeak

Micro Direct

Score

Price

$25

Evidence

Strong

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Performance Metrics

Omron Peak Air Peak Flow Meter (PF9940)

Micro Direct MicroPeak

Performance Metrics

Omron Peak Air Peak Flow Meter (PF9940)

Micro Direct MicroPeak

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.

Individually calibrated at the factory to meet ATS standards, providing reliable PEF readings with a resolution of 10 L/min.

+5% better measurement accuracy

Measurement Accuracy

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

+5% 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.

Simple 'one-size-fits-all' design with high-contrast markings; the reset slider is ergonomic and simple for children to operate.

Ease of Use

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

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.

Constructed from high-impact medical-grade polymers with a non-removable internal mechanism designed to maintain integrity without dismantling.

+7% better build quality

Build Quality

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

+7% 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.

One of the most cost-effective medical-grade monitors available, offering professional accuracy without the maintenance costs of electronics.

+4% better value for money

Value for Money

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

+4% better

Clinical Efficacy

Omron Peak Air Peak Flow Meter (PF9940)

Micro Direct MicroPeak

Clinical Efficacy

Omron Peak Air Peak Flow Meter (PF9940)

Micro Direct MicroPeak

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.

Meets all international performance standards for peak flow meters, with accuracy validated across 26 distinct flow-time profiles.

+7% better peak flow accuracy

Peak Flow Accuracy

Measures the precision of Peak Expiratory Flow rate readings.

+7% 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.

Demonstrated repeatability of less than +/- 2% in bench tests, ensuring that observed changes in patient data reflect actual physiological shifts.

+8% better measurement repeatability

Measurement Repeatability

Assesses the consistency of results across multiple identical maneuvers.

+8% 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 spring-piston mechanism is critically damped at 350 L/min to provide a stable reading that accurately reflects the maximum expiratory effort.

+7% better effort-dependent sensitivity

Effort-Dependent Sensitivity

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

+7% 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.

Features adjustable color markers (Green, Yellow, Red) that are physically integrated into the scale housing to prevent loss or wear.

+6% better asthma zone management

Asthma Zone Management

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

+6% better

Specifications

Specification	Omron Peak Air Peak Flow Meter (PF9940)	Micro Direct MicroPeak
Price	$30	$25
FDA Status	FDA 510(k) Cleared	FDA 510(k) Cleared
Clinical Evidence	Moderate Clinical Evidence	Strong Clinical Evidence
Clinical Recommendation	Recommended	Highly Recommended

Value for Money

86 score / $30

286.8

value score

90 score / $25

360.7

value score

26% better value

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.

Micro Direct MicroPeak

Strengths

✓ In-built one-way check valve prevents cross-infection.
✓ Broad measurement range from 60 to 900 L/min.
✓ High-visibility scale with clear 10 L/min increments.
✓ Durable construction requires no dismantling for maintenance.
✓ Movable asthma management zones that won't wash off.

Limitations

× Lacks the digital memory and data logging of electronic models.
× No FEV1 measurement capability.
× Relies entirely on manual record-keeping in paper journals.

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

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Micro Direct MicroPeak

Highly Recommended

"The MicroPeak is a rugged, highly accurate mechanical meter that sets the clinical benchmark for non-electronic respiratory monitoring."

The Micro Direct MicroPeak is a professional-grade mechanical peak flow meter designed to meet the rigorous performance requirements of both the American Thoracic Society (ATS) and European standards (EN13826). Manufactured by Micro Medical Ltd and fabricated by Fyne Dynamics, it utilizes a precision-calibrated internal spring and piston mechanism. A standout engineering feature is the in-built internal check valve, which ensures that air can only be expired into the device, effectively preventing cross-infection-a critical safety feature in multi-patient clinical environments. The device features a large, high-visibility scale that provides clear resolution from 60 to 900 L/min, making it suitable for a broad spectrum of patients from pediatrics to high-flow athletes. Clinical performance data indicates that the device maintains an accuracy of within +/- 5% to 10%, depending on the specific scale used, with exceptional longitudinal repeatability. The inclusion of movable asthma management color zones that do not wash off further enhances its utility for daily patient self-management.

Strong Clinical Evidence

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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.

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Kroger

$24.99

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

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McKesson Medical-Surgical

$27.50

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

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Manufacturer Site

HSA/FSA: Usually Eligible

Micro Direct MicroPeak

Top Choice

$25 MSRP

No retailer information available

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.