Artifact Description: The surface of the chariot mirror is coated with black ink. The purpose of this test is to find the appropriate agent that can quickly strip this black ink.
-
Before cleaning, the surface of the chariot prism.
-
Put it in the dust cleaning agent PTC13 (80%+20% pure water), heat to 75°C, and soak for 5 minutes. It is found that the black ink has begun to dissolve after soaking for 1 minute, and the longer the soaking, the more the black ink dissolves. After soaking for 5 minutes, the black ink was found to have been almost completely removed.
