Originally posted by Falcon
Can I ask a stupid question? If I put some used silica gel into the dry cabinet, will silica gel turns back to dark blue?
It might, but it will take ages. The dehumidifying unit inside the cabinet is not designed to dry up silica gel. It's designed to keep the cabinet at a constant humidity.
The Relative Humidity (RH) inside the cabinet will be maintained if the door is not constantly opened. Once open and the RH drops, it will take hours before the RH gets back to the preset. This is normal for all dry cabinets.
A question was asked about the cost of monthly electricity bill in using the cabinet. A simple calculation will tell you the consumption. The dehumidifier unit inside the cabinet is rated at max 5 watts. So leaving the cabinet on 24/7 will come to:
5(watts) x 24(hrs) x 30(days) = 3600watthour. (3.6Kwh)
multiply this by the kwh rate charged by Singapore Power is the cost of using the dry cabinet per month.
In any case, if you value your camera equipment it's justifyable to use the dry cabinet. 'Cos in using the standard dry box with silica gel, don't forget that you'll still have to use a microwave to dry up the gel when it gets pink. Power consumption of a microwave is very high, so LPPL.
My opinion is get one with pull out shelves preferably metal, this will ease putting in and removing items from the cabinet. Brand and size is dependent on your equipment and budget.
Hope this helps