Desiccant Refills are used to replace the saturated desiccants in the transformer breathers.
An alternative to Desiccant Reactivation Unit, Desiccant refills are available for all Transformer Breathers. When the Envirogel (Orange-indicating silica gel) in the Breather show signs of saturation (colour changing from Orange to Green), it acts as a hint that it is time to get it replaced with these Desiccant Refills.
Refills are available, ranging from 0.5Kg to 50Kg.
Alternatively, investing in the Desiccant Reactivation Unit is an excellent investment to reuse saturated desiccants by drying them out.