Molecular Sieves

The high-quality molecular sieves from MilliporeSigma are suitable for drying practically all gases and liquids. Common applications include the use in desiccators and drying tubes, keeping absolute solvents dry, filling columns for drying gases or solvents and selective adsorption (e.g. phosgene from chloroform).

Molecular sieves feature high adsorption capacity even at high temperatures and low water content of the substance to be dried. Due to their very small pores of exactly defined dimensions, they selectively adsorb only molecules small enough to pass through the holes. Molecular sieves show an especially high adsorption affinity for polar and unsaturated organic molecules; however, H₂O is always preferentially adsorbed.

Another advantage is their ease of use and disposal thanks to their high chemical inertness and non-toxicity. Regeneration can be carried out as often as required.

Our molecular sieves with 0.3 nm bead form and with moisture indicator brown gel can be used in Karl Fischer titrators.