Molecular Sieve Range

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Short Description Buy it Online

Molecular Sieve Bags are available in a range of sizes from 3g to 500g

Description Buy it Online

Molecular sieve desiccant bags provide the perfect solution to packaging and equipment applications that require low relative humidity levels. Standard bag capacities range from 3g to 500g. 1kg and more 3A, 4A, 13X,  Molecular sieve  refills can be also be purchased  in our Buy Online section. 

Molecular sieves desiccant is synthetically produced from alumina silicates and has an adsorption capacity of approximately 20% (by weight) at a relative humidity of 50% at 25°C.

The main advantages of using molecular sieves desiccant are:

  • High adsorption efficiency at high temperatures.
  • Ability to maintain a low relative humidity.
  • Rapid adsorption performance.


Typical applications include, general packaging, electrical/electronic enclosures, electro-optical and optical equipment.

The addition of a colour change indicator card will provide a visual indication of the relative humidity level within the packaging or enclosure. This provides an important check to ensure that the desiccant is still active.

Brownell can also supply molecular sieve bags conforming to Explosives Compatibility Specification HR904.

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