There are various types of desiccant used nowadays. It depends on the requirement and the situation that which type of desiccant has to be used. Among all the most popular type of desiccant is silica gel then come Molecular sieves. It is not possible to use the best desiccant all the times. It depends on the situation that which desiccant suites the best.
Taking more about their structure they are mostly manufactured in A and X type crystalline structure. Molecular sieve for water removal can be the best application for which this desiccant can be used. One difference between these molecular sieves and silica gel is that silica gel is an indicating type desiccant but at the same time molecular sieves are differentiated on the basis of its molecular size that is 3A, 4A, 5A and 13X. Bigger the molecular size will be better will be its absorption capacity. Also, it cannot absorb those elements bigger than the size of these molecular sieves size. Many of the industrialists use only this desiccant but if required you can also use this desiccant in combination with other desiccant like activated carbon so that you can get rid of moisture and odor all at the same time.
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