For critical applications, particularly within the medical and durable goods sectors, rigorous testing and adherence to international standards are non-negotiable for facilitating global trade and mitigating legal exposure.

The Mandate for Global Compliance and Safety

Narula maintains in-house testing capabilities and adheres rigorously to ISO and EN standards for industrial and medical applications. Beyond performance metrics, the company conducts testing to meet chemical safety and compliance requirements, including Oeko-Tex, RoHs, and REACH standards, ensuring that materials are cleared for entry into major international markets.

Verifying Critical Barrier Functionality

The performance of barrier fabrics is validated through specific, quantifiable metrics:

1. Bacterial and Viral Barrier: Filtration efficiency is quantified using standardized methods, such as the CNS-14775 equivalent, to measure the material’s ability to capture airborne particulates and pathogens. Narula’s testing ensures that meltblown media achieves a Bacterial Filtration Efficiency (BFE) exceeding 95%, confirming its alignment with international respiratory standards (like the EN149 classification system).
2. Liquid Barrier Integrity: The fabric’s resistance to liquid penetration is assessed using hydrostatic pressure tests, specifically the synthetic blood penetration test (CNS-14776 equivalent). This test verifies that medical PPE maintains barrier integrity under pressures up to 80 mmHg.
3. Surgical Compliance: Compliance with EN 13795 confirms that the surgical products meet strict European criteria for essential barrier, strength, and low linting properties. By meeting this standard, Narula removes a significant market gatekeeper barrier for customers targeting highly regulated European medical supply chains, positioning the company as a pre-vetted supplier.

Mechanical Integrity and Lifespan Assurance

To ensure the material is fit for its intended lifespan, mechanical and physical limits are thoroughly tested:

• Mechanical Integrity: Testing for tensile strength and elongation quantifies the stress a fabric can withstand before breaking—a vital metric for protective clothing and high-load products like geotextiles.
• Physical Parameters: Air permeability is measured to confirm breathability in PPE and filtration efficiency in air filters. Thickness measurements adhere to recognized methodologies like ASTM D5729 (conventional) or ASTM D5736 (high-loft).
• Lifespan Guarantee: For fabrics designated for long-term outdoor or construction use (e.g., crop covers, geotextiles), UV resistance testing is conducted to guarantee the material’s extended service life under continuous environmental exposure.

The consistent use of standardized testing provides quantifiable, objective data, allowing sophisticated buyers and R&D teams to match material specifications directly to application performance requirements. This emphasis on objective performance metrics minimizes the risk of expensive material failure by moving the purchasing decision toward verifiable, functional performance.

Key Nonwoven Quality Standards & Test Metrics