Determination of Breathing Resistance Testing ISO 16900-2

Introduction 

Breathing resistance is an important performance characteristic of respiratory protective devices. Respiratory protection products must provide adequate protection while allowing the wearer to breathe with an acceptable level of effort. 

Excessive breathing resistance can increase breathing effort and cause discomfort, particularly when respiratory protective devices are used for extended periods or during physically demanding activities. 

ISO 16900-2 specifies a laboratory test method for determining the breathing resistance of respiratory protective devices under controlled test conditions. Professional laboratories such as METS Laboratories perform breathing resistance testing to help manufacturers, suppliers, and respiratory protection product companies evaluate product performance, support quality control, and meet applicable standards and customer requirements. 

What is ISO 16900-2? 

ISO 16900-2 — Respiratory protective devices — Methods of test and test equipment — Part 2: Determination of breathing resistance 

The standard specifies methods for determining the breathing resistance of respiratory protective devices under defined laboratory conditions. 

The test evaluates the pressure required to move air through the respiratory protective device at specified airflow conditions. The assessment can include: 

• Inhalation resistance 
• Exhalation resistance 

The applicable test configuration and requirements depend on the type and design of the respiratory protective device. 

Products Commonly Tested 

Breathing resistance testing can be relevant to various respiratory protective devices, including: 

• Filtering half masks 
• Respirators 
• Reusable half masks 
• Full-face masks 
• Respiratory protective devices with filters 
• Air-purifying respirators 
• Other applicable respiratory protective equipment 

The specific test requirements should be determined according to the applicable product standard and intended use. 

Importance of Breathing Resistance Testing 

Breathing resistance testing helps manufacturers evaluate the airflow performance and usability of respiratory protective devices. Testing can help: 

• Assess inhalation and exhalation resistance 
• Improve wearer comfort 
• Evaluate respirator design 
• Support product development 
• Verify manufacturing consistency 
• Compare different filter materials 
• Support quality control 
• Meet applicable customer requirements 
• Support product certification and compliance programs 

Maintaining an appropriate breathing resistance is important for user comfort and the practical use of respiratory protective equipment. 

 Factors Affecting Breathing Resistance

Several factors can influence the breathing resistance of respiratory protective devices: 

• Filter media type 
• Filter material density 
• Number of material layers 
• Filter surface area 
• Respirator design 
• Valve design 
• Material thickness 
• Airflow characteristics 
• Manufacturing consistency 
• Moisture and environmental conditions 

Optimizing filter media and product construction can help manufacturers achieve an appropriate balance between filtration performance and breathing comfort. 

Breathing Resistance and Product Development 

Breathing resistance testing is valuable during both product development and production quality control. 

Manufacturers can use test results to: 

• Compare different filter media 
• Optimize respirator construction 
• Evaluate new designs 
• Monitor production consistency 
• Investigate changes in filter performance 
• Select suitable raw materials 
• Improve wearer comfort 
• Support product certification 

Testing at different stages of development can help identify design or material issues before commercial production. 

Quality Control Testing 

Regular breathing resistance testing can help manufacturers maintain consistent respiratory protection product performance. 

Quality control testing can identify variations caused by: 

• Changes in raw materials 
• Filter media manufacturing variations 
• Changes in product construction 
• Production process changes 
• Supplier material variations 

Consistent test results provide valuable data for maintaining product quality and manufacturing control. 

Why Choose METS Laboratories for ISO 16900-2 Testing? 

Professional laboratory testing provides objective measurements of respiratory protective device performance under controlled conditions. 

METS Laboratories supports manufacturers, exporters, suppliers, and respiratory protection product companies with laboratory testing services designed to evaluate product performance and quality. Testing services can help businesses:

• Determine breathing resistance 
• Evaluate respirator performance 
• Support product development 
• Verify production quality 
• Compare materials and designs 
• Meet applicable buyer requirements 
• Support compliance documentation 

Conclusion 

ISO 16900-2 Determination of Breathing Resistance Testing is an important laboratory evaluation for respiratory protective devices. 

The test determines the resistance to airflow through the device under specified conditions and provides valuable information about inhalation and exhalation performance. 

Reliable breathing resistance testing helps manufacturers optimize product design, improve wearer comfort, maintain consistent quality, and support applicable certification and compliance requirements. 

Professional laboratories such as METS Laboratories use standardized test methods and calibrated laboratory equipment to provide accurate and dependable breathing resistance test results. 

As demand for effective and comfortable respiratory protection continues to increase, breathing resistance testing remains an important part of respiratory protective device performance evaluation and quality assurance.