Silica gel sachets or bags, are simply flexible 'containers ' of silica gel.
The sachet material has to be robust and capable of withstanding normal
handling whilst most importantly, being able to breathe. This means that water molecules
can pass through the material and be adsorbed by the silica gel. Standard sachet
materials are tea-bag paper, fabric, cotton or Tyvek™. Some sachets have
heat-sealed seams, others are sewn.

We produce a range of standard size silica gel sachets using non-indicating (white)
or self-indicating (orange/green or orange/colourless) silica gels. In the latter
case, the colours are visible through the sachet paper or fabric.
Self-indicating silica gel sachets are often useful in test situations, to confirm the
suitability of the sachet size chosen, or in cases where an item is frequently
inspected and the sachet can be replaced if it has become exhausted.