Molecular Sieve Packets are perfect if you need to remove the water from a liquid or a gas, your most effective solution is to use a molecular sieve desiccant. In the past, alumina desiccants and silica gel were used in this scenario, but molecular sieve desiccants can outperform either of them. A molecular sieve desiccant's capacity for water adsorption can be as high as 22% of the weight of the desiccant. Molecular sieves packets provide more versatility than other desiccants.