How much weight is used for alcohol test of hardware fuel injection parts?

500g weight. According to the inquiry of Pacific Science and Technology Network, on the alcohol tester, the pure cotton cloth was soaked in more than 95% alcohol, then the product was scrubbed back and forth for 30 to 50 times, tested with 500g standard weight, and then the test data was recorded. Oil-sprayed hardware parts refer to a processing technology that paints the metal surface to achieve the effects of decoration, rust prevention and wear resistance.