An alternative to the Desiccant Reactivation Unit, Deissicant Refills can offer moisture protections for all Transformer Breathers. When the Orange-Indicating Silica Gel in the breather is saturated, it can provide visible hints to users that the desiccant requires replacement through its colour-changing feature from orange to green. Refills are available in different sizes ranging from 0.5Kg to 50Kg.