Contact angle measuring instrument is used to measure the contact angle of standard glass sheets soaked in cleaning solution samples

The contact angle measuring instrument uses the principle of optical projection to accurately collect and analyze the contour of the gas liquid solid three-phase interface. The testing methods for contact angle measuring instruments include seat drop method, liquid addition/contraction method, tilt method, hanging drop method, fiber adhesion method, bubble capture method, batch fitting method, insertion plate method, etc.

The testing items for glass water cover its physical properties, chemical composition, and functional performance, mainly including the following aspects: firstly, freezing point testing, which is the core indicator to measure its anti freezing ability, ensuring that the product does not freeze in the claimed low-temperature environment. Next is pH testing. Neutral or weakly alkaline glass water can prevent corrosion of rubber wiper blades and car paint. The third is the assessment of cleaning ability, which tests its effectiveness in removing specific stains through simulation experiments. The fourth is to detect the corrosiveness of metals and evaluate their potential hazards to vehicle metal components. In addition, the testing scope also includes the stability, appearance (such as color, transparency, presence of suspended solids), odor, and harmful substance content (such as volatile organic compounds such as methanol) of the product to ensure product safety and environmental protection.