Mask respiratory resistance tester

The Mask Respiratory Resistance Tester is designed to measure the inhalation and exhalation resistance of respirators and masks under controlled conditions. The instrument simulates real human breathing through a 3D-printed standard head mold and accurately measures flow resistance at specified airflow rates. It provides precise evaluation of mask performance, including ordinary masks, dust masks, medical masks, and anti-fog respirators, and is suitable for both manufacturers and national inspection agencies.

Application

The Mask Respiratory Resistance Tester is applicable to respiratory resistance evaluation across the following industries and products:

(1) Medical and Healthcare Industry: surgical masks, medical face masks, N95/FFP masks, disposable masks — testing inhalation and exhalation resistance

(2) Personal Protective Equipment Industry: dust masks, anti-fog masks, respirators — evaluation of airflow resistance and wearer comfort

(3) Quality Control: production batch verification, mask material compliance testing for breathing resistance standards

(4) Research and Development: development of new mask and respirator materials, optimization of airflow and comfort

(5) Third-Party Testing Laboratories: certification testing, laboratory evaluation of mask respiratory resistance

The instrument is widely used for product development, production quality control, R&D, and laboratory testing.

Standards

The instrument complies with and can be applied to the following standards (including but not limited to):

(1) EN 149-2009, Sections 7.15 & 8.3.4 – Respiratory Protective Devices — Testing of Breathing Resistance

(2) EN 13274-3 – Respiratory Protective Devices — Determination of Breathing Resistance

(3) GB 19083 – Technical Requirements for Medical Protective Masks

(4) GB 2626 – Respiratory Protective Equipment: Filtered Particulate Respirator

(5) NIOSH 42 CFR Part 84 – Certification Requirements for Respiratory Protective Devices

(6) JIS/T 8151 – Testing Methods for Respiratory Protective Devices

Features

(1) Touch screen control with English menu and man-machine dialogue mode, easy to operate

(2) Built-in thermal printer for immediate on-site test results

(3) Configurable breath detection and inhalation detection modes

(4) Automatic respirator pipeline switching prevents accidental disconnection or misconnection

(5) 3D-printed standard head mold simulates real human inhalation and exhalation for accurate data

(6) High-precision thermal mass flow sensors with no temperature or pressure compensation required

(7) Micro-manometer sensor with high accuracy (-1000 Pa to 1000 Pa) and adjustable damping

(8) Integrated gas path conversion for rapid switching between inhalation and exhalation pipelines

(9) Data logger with graphic dot-matrix LCD (128 × 64) and 4M memory

(10) Stable suction volume (40–100 L/min) and constant ventilation (85 L/min)

Technical Parameters

Item	Specification
Inhalation Flow Rate	30 L/min, 95 L/min
Exhalation Flow Rate	160 L/min
Flow Impact Test Rate	300 L/min
Flow Sensor	Thermal mass flow meter, high sensitivity
Micromanometer Range	-1000 Pa – 1000 Pa, accuracy 1 Pa
Head Mold	3D-printed standard head, simulates human inhalation/exhalation
Suction Pump	40–100 L/min
Ventilation Volume	Constant 85 L/min
Data Logger	Graphic dot-matrix LCD, 4M memory, Chinese/English interface
Power Supply	AC 220 V, 50 Hz

Accessories

Main testing unit with suction and ventilation system

3D-printed standard head mold

Inhalation and exhalation tubing systems

Thermal mass flow sensor and micromanometer sensor

Built-in thermal printer

Data logger and controller

Power cable

Operation manual

Calibration certificate

Test Procedures

(1) Connect the mask to the inhalation/exhalation pipelines of the standard head mold

(2) Set the airflow rate according to the required test protocol

(3) Start the instrument and begin automatic measurement

(4) Record inhalation and exhalation resistance values

(5) Repeat tests for multiple specimens or different flow conditions

(6) Use the built-in printer or data logger to save results

(7) Clean the head mold, tubing, and sensors after testing

Maintenance Information

(1) Do not carry the instrument by the bottom of the control box to avoid damage

(2) Wipe electroplated parts with oil to prevent rust

(3) After testing, clean the instrument and lubricate moving parts to maintain sensitivity

(4) Wipe control panels and display screens with a dry cloth to protect electronics

(5) Store all fixtures and joint accessories properly, applying anti-rust oil if necessary

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