Lekhalo la sieve ea molecular 5A le ka ba li-angstrom tse 5, tseo hape li bitsoang calcium molecular sieve.E ka sebelisoa ho liindasteri tsa ho etsa oksijene le liindasteri tse etsang hydrogen.
Molao-motheo oa ts'ebetso oa li-sieve tsa limolek'hule o amana haholo le boholo ba pore ea li-molecular sieves, wBa ka adsorb limolek'hule tsa khase tseo bophara ba tsona ba molek'hule bo leng nyane ho feta boholo ba pore.Ha boholo ba boholo ba pore bo boholo, matla a adsorption a maholo.Boholo ba pore bo fapane, 'me lintho tse tlhotliloeng le tse arohaneng le tsona li fapane.Ha e sebelisoa e le desiccant, sieve ea molek'hule e ka monya ho fihlela ho 22% ea boima ba eona ka mongobo.