⚡ Understanding Surface Resistivity

Surface resistivity is a measure of how well a material resists electrical current flowing across its surface. The results are typically expressed in ohms per square (Ω/□) and help classify materials into:

• Insulative materials (≥ 10¹² Ω/□)

• Static dissipative materials (10⁵ to 10¹¹ Ω/□)

• Conductive materials (≤ 10⁴ Ω/□)

These values are crucial in preventing electrostatic discharge (ESD), which can damage sensitive components in electronics and create safety hazards.

📘 What Does IS 3396 Define?

IS 3396, established by the Bureau of Indian Standards (BIS), outlines the method for determining surface resistivity in solid electrical insulating materials, primarily those made of plastic, rubber, or polymer composites.

It includes guidelines for:

• Sample preparation

• Test electrode configuration

• Voltage application

• Environmental controls such as humidity and temperature

At Kiyo, we strictly follow these parameters to ensure repeatable and compliant test results.

🧪 Industries That Rely on Surface Resistivity Testing

Surface resistivity testing is indispensable for several applications, including:

• Electronics manufacturing – for PCBs, connectors, and enclosures

• Automotive interiors – ensuring safety from static shocks

• Packaging materials – especially for ESD-sensitive components

• Flooring and mats – in cleanrooms and control panels

• Defense equipment – where insulation properties are mission-critical

🧰 Kiyo’s Testing Highlights

At Kiyo R&D Center & Laboratory, our Surface Resistivity Testing includes:

• High-precision measurement instruments

• IS 3396-compliant procedures

• Detailed test reports with interpretation

• Quick turnaround for development and compliance needs

We help clients meet both national and global product requirements while maintaining quality, consistency, and safety.