Test Methods for Anti-Static Gloves
Anti-static gloves are used in cleanrooms to prevent static electricity generated by the human body from damaging products. If the anti-static properties of the gloves you are wearing are compromised-without your knowledge-it could lead to significant losses. Therefore, it is crucial to understand the test methods and standards for anti-static gloves. This process involves various pieces of equipment, which will be outlined here. Two types of megohmmeter (insulation resistance tester) settings are used: 100V and 10V (±5%). The 100V setting is used for measurements ≥ 1×10⁶ ohms, while the 10V setting is used for measurements < 1×10⁶ ohms. Additionally, an anti-static wrist strap, a metal plate, and an electrostatic voltmeter are required.
Testing must be conducted according to a specific procedure, as follows:
* Environmental conditions for testing: Temperature: 23 ± 3°C; Relative humidity: 40%–60% ± 5%.
* Ensure that the equipment under test and the megohmmeter electrodes are clean. If necessary, clean them using a soft, lint-free wipe dampened with 70% isopropyl alcohol.
* When performing initial inspections or routine checks, at least six product samples must be tested.
* To test the surface resistance of the gloves, place the sample on an insulating board, then position the megohmmeter electrodes on the surface of the glove. Ensure the electrodes do not extend beyond the edges of the sample.
* Once the electrodes are in place, begin the test using the 10V setting on the megohmmeter. If the reading is < 1.0×10⁷ ohms, continue the test using this setting; if the reading is > 1.0×10⁷ ohms, switch to the 100V setting. Wait for the reading to stabilize, then record the value to complete the test. * Use the same procedure to test other samples. The standard for surface resistance is: ≥1.0×10⁵ ohms to <1.0×10⁹ ohms.
For anti-static gloves, accurate data can only be obtained by strictly following the prescribed testing procedures. This is essential for better preventing damage to electronic products and chips during the work process.