Drierite is a laboratory grade desiccant. Please be advised that there are different grades of desiccants. Unlike store bought, or “paint grade” desiccants that only absorb a small percentage of their mass. Drierite instantly absorbs 6.6 weight percent water by chemical action, creating the hemihydrate of calcium sulfate. Drierite granules have 38 percent pore space volume, which accounts for its high absorption capacity.
Myco Supply carries both an indicating drierite and a non-indicating drierite. Indicating drierite is blue when dry and changes to pink upon absorption of moisture. The color change is pronounced and clearly visible. This makes indicating drierite valuable when it is necessary to know with certainty that dryness is being maintained and to signal when the drying agent should be refreshed. It has the same efficiency as regular drierite, and somewhat greater capacity due to the desiccating effect of the cobalt chloride. The non-indicating white drierite is suitable if moisture indication isn’t important in your operation.
For the regeneration of drierite, the granules may be spread in layers one granule deep and heated for 1 hour at 210° C or 425° F. The regenerated material should be placed in the original glass container and sealed while hot.
Myco Supply carries both one pound bottles of Drierite as well as larger five pound bottles of both non-indicating and indicating Drierite.
Looking for an alternative dehumidifier, please click here to review our Desiccant Dehumidifiers
(Myco Supply can also have drierite specially manufactured to meet your needs. Contact us for more information).