How can silica gel work when it's inside a sachet ?
The materials used to make silica gel sachets are specifically chosen to be breathable.
Water vapour passes through them to be adsorbed by the silica gel.
Does silica gel comes ready to use ?
Yes. The silica gel does not need to be 'generated' before use.
It is always sold (loose or in sachets) in a dry condition, ready for use.
How long can silica gel be usefully stored ?
The shelf life of silica gel is around 12 months (although practical experience has shown that it can often far exceed this). The crucial factor is to keep it in a sealed environment until it is needed for use - it will, of course, adsorb moisture from any environment.
How much water vapour can silica gel hold ?
Silica gel will adsorb up to 34% of its own weight in moisture.
Is silica gel dangerous ?
Non-indicating (white) silica gel is non-toxic and non-flammable, it is very inert with a very high melting point.It is very much like sand and thus can safely be sent by any means of transport.
Does silica gel get wet as it adsorbs water ?
No it doesn't, it traps water molecules inside its pores yet remains dry and appears physically unchanged.
Silica gel is a desiccant then ?
Yes, it adsorbs water vapour by physical means, not a chemical reaction.
Water vapour is attracted inside the silica gels crystalline structure.
How to determine the dosage of desiccant ?
Desiccant dosage depends on many factors :
Size of dry dimensional, performance of packaging material, storage environment of packaged gods, atmospheric conditions of seal, shelf of packaged goods and seal degree of packing and so on.
Dosage parameters(For reference only) specifications of vessel----dosage
Dongguan Dingxing Industry Co.,Ltd was established in year of 1997. We specialize in the production of various different desiccants, such as silica gel, montmorillonite, activated clay, calcium chloride and activated carbon, anti mold sticker, humidity indicator cards and dehumidifier box etc.
1. Strong R&D: one new product per 6 months by desiccants solution engineers, own reliability testing lab (TEMP&HUMI chamber).
2. Huge production capacity: 120 skilled workers and 100 sets of advanced automatic packing machines and 30 sets printing machines.
3. Third part certified factory: TUV, ISO9001:2008, ISO14000:2008.
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