Wisesorbent Molecular Sieve Desiccant
Physical Absorption Desiccants

Wisesorbent Molecular Sieve Desiccant employs 4A molecular sieve as its adsorbent and Winner paper for its packing material. 4a molecular sieve desiccants have stable cellular structures, a uniform pore diameter, strong mechanical strength and have excellent moisture absorption capacity at both high and low temperatures. Winner-paper has a breathability characteristic very similar to that of non-woven fabrics, it is also dust-proof like paper and like plastic does not allow for mildew growth. It has great overall tensile strength, excellent sealing strength and good permeability containing no hazardous materials. It is widely used for the transportation and storage of medicine reagents and moisture-sensitive electronic components that must be stored at low-humidity.

Product Information

Industry Videos

Industry Desiccant Video Thumb

  • Model: Wisesorbent
  • Absorbent: Molecular Sieve
  • Packing Material: Werna Paper
  • Specifications: 1g – 500g
  • Forms: Bags


In this chart, we can easily see that the giving condition under the room temperature and humidity rate is higher than 37%: 4A molecular sieve also has very similar adsorption capacity along with Montmorillonite and white silica gel. 4Å molecular sieves have also been used to remove heavy metal ions present in water due to industrial activities.

Technical Standard
Item Index Standard
3A (globular) 4A (globular) 5A (globular) 12X (globular)
Weight Please refer to specification details
Size Please refer to specification details
Water ratio(550℃) ≤3.0%
Moisture absorption rate (25℃) – RH=20% ≥15.0% ≥17.0% ≥18.5% ≥19.0%
Moisture absorption rate (25℃) – RH=40% ≥17.0% ≥19.0% ≥20.5% ≥21.0%
Stacking Density g/L ≥640 ≥660 ≥750 ≥640
Absorbing Speed g/g.7h 23℃, RH=40% ≥0.007g/g.7h
Drop Test (>100g) There is no any damage when we drop the desiccant bag from 3meter height more than 15 times.
Dust ≤0.3mg/g