How to Test the Performance of Disposable Anti-Static Heel Straps
Performance Test Method for Disposable Anti-Static Heel Straps
According to ANSI/ESD SP9.1-2006, testing must be conducted in low humidity (RH 12% ± 3%) and medium humidity (RH 50% ± 2%) environments. The specific steps are as follows:
Sample Preparation
At least six samples should be collected and allowed to acclimate to the test environment for 72 hours.
Before testing, ensure that the point-to-point resistance of the insulating surface is >10¹³Ω to avoid interference with the results.
Electrode Placement
FCS electrode: Placed on the long conductive surface where the heel strap contacts the ground.
BCM electrode: Placed on the surface of the heel strap that contacts the skin, ensuring no direct contact with the FCS electrode.
Resistance Test
Using an anti-static resistance tester (such as the Victory Instruments VC385+), apply a voltage of 7-30V and measure the resistance between the two electrodes.
Qualifying Criteria: Total resistance ≤1.0×10⁹Ω, excluding skin resistance interference. Environmental Factor Control
The higher the test voltage, the less impact skin resistance has, but it must remain within the standard range.
Temperature and humidity fluctuations must be strictly controlled within ±2%.
Notes
Test Equipment Calibration: Regularly calibrate the resistance tester's accuracy to avoid errors.
Single-Use Limitation: Disposable products cannot be retested; a new sample must be used.