Desiccant Reactivator Unit
SKU: BL/E1005/03

Desiccant Reactivator Unit


The Series 2 Desiccant Reactivator Unit is a device specifically designed for the regeneration of saturated silica gel. Simplicity and efficient operation are the key features of the Series 2 Desiccant Reactivator Unit with its ability to process up to 55 lbs. (25 kg) of saturated silica gel in one cycle. Desiccant Reactivator Units may also be used to regenerate saturated indicating silica gel.

The Series 2 Desiccant Reactivator Unit is operated from a standard main electricity outlet to power the three kilowatt heaters. Forced air circulation ensures that the evaporating moisture is transported away from the desiccant.

The temperature monitoring and control instruments of the Series 2 Desiccant Reactivator Unit are a unique feature and provide precise reactivation management to ensure maximum reactivation efficiency. The input reactivation temperature control is user settable and includes a constant readout of the inlet temperature. An accurately located output temperature monitor indicates the progress of the reactivation process through the desiccant bed. When the output temperature nears the inlet temperature, effective reactivation is complete.

The Series 2 Desiccant Reactivator Unit is mounted on wheeled casters for easy placement in a workshop or on-site. The inner desiccant holder is removable for emptying and loading the silica gel.

The Series 2 Desiccant Reactivator Unit, when fully loaded with saturated silica gel, drives off more than 4,500 cubic centimeters (4.5 liters) of water vapor during a processing time of six hours.


Maximum Silica Gel Capacity 55 lbs. (25 kg)
Electrical Supply 240 volts, 60 Hz, 3 kilowatts
Maximum Reactivation Unit 221°F (105°C)
Reactivation Air Flow (Typical) 7 CFM (200 liters/minute)
Elapsed Time Indicator Event and total hours run
Color & Construction Gray painted mild steel
Weight 165 lbs. (75 kg)
Dimensions 41.5 in. (1,055 mm) high
20 in. (508 mm) deep
26 in. (660 mm) wide



How does the reactivation work?
As a general rule, saturated desiccant will require a minimum of 4-6 hours at a temperature of between 221°F to 266°F (105°C to 130°C) throughout the entire desiccant bed for the reactivation process to be effective and reduce the adsorbed moisture to less than 2% by weight. The recommended reactivation temperature for Blue to Pink silica gel is max. 266°F (130°C) and the recommended reactivation temperature for Orange to Green silica gel is max. 221°F (105°C). The actual maximum temperature that the oven will reach is approximately 275°F (135°C) even though the temperature dial on the unit shows a range of 32°F to 392°F (0°C to 200°C). CAUTION: Some desiccants are seriously damaged and can release toxic chemicals if overheated.

Reactivation should be carried out in a ventilated electric oven. A sealed oven will limit the moisture liberated and prevent efficient reactivation.  Gas ovens and microwave cookers are also not suitable for reactivation. Ideally, after reactivation the desiccant must be placed in a sealed container and allowed to cool. The reactivated desiccant should not be stored in a warm oven at 140°F (60°C) as this may allow partial saturation of the desiccant although the activity indicator may indicate the desiccant is active.

The Reactivator Unit is able to reactivate up to 55 lbs. (25 kg) of saturated silica gel using a standard 13 amp domestic supply. To validate reactivation efficiency, a fundamental weight loss test conducted before and after processing will provide the data to calculate the amount of moisture lost. A supply of pre-heated air is an integral requirement for an efficient reactivation process. For saturated desiccant a minimum air flow of between 5-10 cubic feet per minute is required.

How high is the temperature?
Silica gel has the ability to release absorbed moisture when heated to a temperature of over 212°F (100°C); it can then be used again. The maximum recommended reactivation temperature for silica gel is 266°F (130°C).

Can I reactivate molecular sieve, as well as silica gel?
The 1005 Reactivator Unit is designed to reactivate silica gel, not molecular sieve. You would need a higher temperature in order to reactivate molecular sieve desiccant.

Can I reactivate bags?
AGM does not recommend using the 1005 Reactivator Unit to reactivate desiccant bags as the reactivation procedure is much more effective with loose desiccant. However, AGM does use these reactivators to reactivate non-refillable desiccators.

Additional Information


240 Volt