H2O Transformer Breather – Replacement Litmus Paper Disc within SS Hex Nut (H2O-HI70SS)

The H2O Transformer Breather – Replacement Litmus Paper Disc within SS Hex Nut is easy to read and changes colour as the Filter absorbs moisture. When the 80% section turns Pink it is time to replace the filter. Used with the H2O Transformer Breathers.