Molecular Sieve
Molecular sieve desiccant is available in 3A, 4A, 5A, and 13X variations and shipped in bags or drums. Molecular sieve desiccant is a sodium aluminosilicate. It has a fixed pore size according to the material specified, a 4 Angstrom pore size being the most common. Pressure dew points to -100°F may be achieved with molecular sieve depending on the compressed air dryer design and operating conditions.
