What is a unit of desiccant?

A desiccant adsorption unit commonly used abroad. According to the adsorption capacity of the desiccant: a desiccant of "unit" can absorb 3.00g of moisture at an equilibrium temperature of 25°C (RH=20%), and a desiccant of "unit" in equilibrium at 25°C Under the condition of air (RH=40%), it can absorb 6.00g water vapor. To be precise, a "unit" montmorillonite desiccant is equivalent to 33 grams, and a "unit" silica gel desiccant is equivalent to molecular sieve. At 28 grams, one "unit" TODRY strong desiccant is equivalent to 6 grams.