Centella asiatica glycoside, as a natural active ingredient, is widely used in medicine, health products, and cosmetics. Its quality directly affects the efficacy and safety of the product. Therefore, it is essential to scientifically and accurately measure the quality of centella asiatica glycoside. 
Firstly, purity testing is the basis for measuring the quality of the global chemical centella asiatica glycoside. The purity level directly reflects the purity of centella asiatica glycoside in the product and is a key factor affecting its efficacy. At present, high-performance liquid chromatography (HPLC) has become the preferred method for the purity detection of centella asiatica due to its high precision, good separation effect, and simple sample preparation. 
By the HPLC method, the content of centella asiatica glycoside can be accurately determined and whether it meets the established quality standards can be determined. Generally speaking, the purity of centella asiatica glycoside should not be lower than a certain percentage, and specific values should refer to relevant pharmacopeias or industry standards.
Secondly, global chemical component analysis is also an important aspect of measuring the quality of centella asiatica glycoside. As a plant extract, centella asiatica glycoside has a complex and diverse composition. In addition to the main active ingredient centella asiatica glycoside, it may also contain other impurities or accompanying components. Therefore, conducting component analysis on centella asiatica glycoside can help to comprehensively understand its chemical composition and provide a scientific basis for quality control. 
Ingredient analysis usually includes two parts: qualitative analysis and quantitative analysis. Qualitative analysis can determine whether a product contains specific ingredients, while quantitative analysis can determine the content of each ingredient. By comprehensively utilizing various analytical techniques such as thin-layer chromatography, ultraviolet spectroscopy, mass spectrometry, etc., comprehensive analysis of the components of centella asiatica can be achieved.
In addition, there are also other indicators used to measure the quality of global chemical centella asiatica glycoside, such as dry weight loss, heavy metal and harmful element content, etc. These indicators reflect the physical stability and safety of the product and are equally important for ensuring the quality of centella asiatica glycoside.
In summary, the quality measurement of global chemical centella asiatica involves multiple aspects such as purity testing and component analysis. By comprehensively utilizing various analytical techniques and methods, the quality level of centella asiatica glycoside can be evaluated comprehensively and accurately, providing strong support for product production, quality control, and market supervision.