Why electronics need humidity protection
Electronics need humidity protection because every gap, seam and lens housing is a place for moisture to enter and fungus to grow. Camera lenses are the most famous victim — fungus on the inner glass is permanent and expensive to remediate — but speakers, microphones, vinyl records, vintage audio equipment and even older laptops all degrade in persistent humidity above 60%.
The two storage approaches that work
First approach: an airtight dry box (a sealed plastic case) with silica gel sachets inside, kept at 40 to 50% relative humidity. This is the photographer's standard — Pelican-style cases with rechargeable silica blocks. Second approach: a regular shelf or wardrobe with a hanging calcium chloride absorber nearby, keeping the ambient room humidity low enough that the equipment isn't sitting in damp air to begin with.
Cameras specifically
- Never store a camera in its original camera bag long-term — the foam padding holds moisture against the body.
- Remove lenses from bodies before long storage.
- Store lenses upright (front element down) inside a dry box with silica.
- Replace silica gel sachets every six months, or use an indicator type that changes colour when saturated.
- If you use multiple lenses occasionally, a dehumidifying lens cabinet ($200–$500) pays for itself by year three.
Audio equipment
Vintage receivers, turntables, tube amplifiers and reel-to-reel tape decks are all susceptible to humidity-induced corrosion on internal contacts and switches. Store in a closed cabinet with a Dew Neutral pouch on the shelf. Keep room humidity below 60%. If you live somewhere genuinely humid, an electric dehumidifier in the room where the equipment lives is the right investment.
Vinyl records
Vinyl records sit in paper sleeves which absorb humidity. Stored in a damp room, the sleeves transfer moisture to the vinyl itself, which encourages a thin layer of mould on the playing surface. Keep records upright (never flat-stacked), in a room with humidity below 60%, and air the collection every few months by going through and pulling sleeves you haven't touched in a while.
Where Dew fits
Dew Neutral pouches work for the room-level humidity control, not for inside a sealed case. Put silica inside the case; put Dew in the room. Together, they create a two-layer dry environment that protects equipment for decades.
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