One, Appearance Assessment. High-quality activated alumina desiccant has a neat appearance, clear and legible printing, a moderately sized seal, and no inclusion of materials, with good raw material fullness. Low-quality desiccants are often poorly crafted, with unevenly sized seals, and some may become particularly bulging due to excessively small bags.
Packaging Evaluation: High-quality activated alumina desiccant packaging should have even thickness, no spots, a smooth surface, and high material strength. It should not be uneven like low-quality packaging, where individual pieces may show the raw material. When squeezed with hands, it should not fade or shed fibers.
Three, Assess Quality by Materials: High-quality raw materials consist of uniformly sized grains, which give off a noticeable heat upon direct touch. In contrast, inferior desiccant raw materials have a less pronounced heat sensation and are characterized by more impurities and irregular grain sizes.
In conditions permitted, the original weight of the active alumina desiccant can be weighed. Place it in a humid environment and allow it to absorb moisture naturally for 48 hours. Re-weigh it; the quality desiccant should show a significant increase. Then, dry it at 105 degrees Celsius for three hours and re-weigh it. If it weighs less than the original, it indicates that the desiccant does not meet the industry's specified weight and is of inferior quality.
We prioritize the economic practicality of the activated alumina desiccant we purchase. To judge its quality, it's essential to base our assessment on understanding. Buying from authorized manufacturers offers greater assurance.
