How to use silica gel

It is vital to prevent moisture from damaging your stamps.

An effective control is possible with the use of hermetic boxes , a moisture meter and silica gel.

Attached a document on how to use silica gel (sorry it is written in Portuguese).

I use a combination of resources to protect my stamps from humidity. 

1- Plastic bags of the  ziplock kind  for carrying and stocking stamps

2- Dehumidifiers saches with silica gel

3- Quality stock albums

4- Moisture meters

5- Avoid handling the stamps when relative humidity is above 60%

6- Hermetic boxes to store the albums

I try to keep the relative humidity in the range 40% to 50%.