Moisture Adsorbing Board (MAB)


The Moisture Adsorbing Board (MAB) is an alternative to the typical desiccant sachets where space is limited. Available in a sheet form, the MAB can be cut into any size to fit into confined spaces, preventing any contamination from desiccant dust. The MAB is available in a standard sheet size of 295mm x 205mm x 1.6mm or in the dimensions of an A4 sh. The size and shape of the MAB can also be customised to meet different specific requirements. It has an average adsorption value of 0.006 grams per cm2 to calculate the quantity of Moisture Adsorbing Board needed. Manufactured from polyethene plastic with active silica gel, it has an operating temperature ranging from -40ºC to 70ºC.

  • Suitable for automatic filling in the packing process
  • Not water-soluble, corrosive, or deliquescent (dissolvable)
  • Easily fixed in place by mechanical retention
  • No dust produced as it is contained in a plastic sheet
  • Moderate to long term hygroscopicity (water-absorbing capacity)
  • Printable sheet surface
  • Can be cut or punched to produce specific shapes or sizes
  • 3D thermoforming (creating a specific shape) is possible
  • Uniform thickness and easy for packing
  • No loose desiccants from broken sachets/bags


  • Polymer: Polyethylene
  • Desiccant: Silica Gel (30%)
  • Operating Temperature: to -40ºC to 70ºC
  • Adsorption Capacity (Nom): 8% – 10% by weight at 50%rh at 22oC
  • Adsorption Rate: 0.05 grams per 24 hours 

Key Features

  • Optional Shapes and Sizes
  • Uniform Thickness
  • No Loose Desiccants
  • Can be printed
  • Flexible/Thermo-formable
  • Long term adsorption characteristic
  • Easy to fix by mechanical retention