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Thread: Q: about silica gel

  1. #21

    Default Re: Q: about silica gel

    Quote Originally Posted by catchlights View Post
    this taken from Dry Cabinet

    Originally Posted by aethra
    i bought my canon 50D about 3 weeks back. After paying the shop $2500 in cold hard cash, my heart ached.

    I decided that I will save money and follow the "locknlock" method. So I drove to buy a 9L Lock N Lock and a bottle of blue silica gel.

    I came home and told my mum that I am trying to save money. She said I was stupid and why did I not buy a $120 dry cabinet instead.

    Now, 3 weeks later, I regret everyday when I see the Lock N Lock box. I could have used the money to buy a dry cabinet (about 20% of the price).

    Just go and buy the dry cabinet, no need to worry about fungus (not that mine is growing any) but it is so convenient.

    I am buying on on 20 October. Thats when pay day comes.
    >_< i get the idea, but where do you find a $120 dry cabinet? :L the cheapest i've seen so far, from websites and stuff, is close to 200 dollars.. :/ and i'd still need about a month or two to save up that kind of money, because i'm still a student, and i'm not holding a part-time job.

  2. #22
    Member Atlas's Avatar
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    Default Re: Q: about silica gel

    When the box become too dry it will damage the rubber on your camera.
    Warmest Regards
    Atlas - Enjoy the World

  3. #23
    Moderator Octarine's Avatar
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    Default Re: Q: about silica gel

    Quote Originally Posted by nuttybrenda View Post
    >_< i get the idea, but where do you find a $120 dry cabinet? :L the cheapest i've seen so far, from websites and stuff, is close to 200 dollars.. :/ and i'd still need about a month or two to save up that kind of money, because i'm still a student, and i'm not holding a part-time job.
    You noticed that there are different sizes? the smallest size (30-36l) is slightly over 100 bucks. for 200 you can get already 60l. Check with camera shops like MS Color and others, some have small dry cabinets ex-stock.
    EOS

  4. #24

    Default Re: Q: about silica gel

    ooh! i'll try to check out the MS color in AMK hub the next time i go there then! ty

  5. #25

    Default Re: Q: about silica gel

    Quote Originally Posted by nuttybrenda View Post
    >_< i get the idea, but where do you find a $120 dry cabinet? :L the cheapest i've seen so far, from websites and stuff, is close to 200 dollars.. :/ and i'd still need about a month or two to save up that kind of money, because i'm still a student, and i'm not holding a part-time job.
    Digi-cabi and AIPO. Use Search function.

  6. #26

    Default Re: Q: about silica gel

    Quote Originally Posted by Rashkae View Post
    The blue/pink dye color IS carcinogenic.
    Here are some material. If need to use silica gel, try to find the orange-green type.
    http://www.geejaychemicals.co.uk/cobaltchloride.htm
    http://hubpages.com/hub/The-Use-of-C...-in-Silica-Gel

  7. #27

    Default Re: Q: about silica gel

    Quote Originally Posted by Octarine View Post
    How do you verify this assumption?
    i did an experiment using digital hygrometer ...

    -1st week, using the 'sd' dehumidifier in the dry box, with my camera &
    -5th week, using the 'sd' dehumidifier in ziplock bag (with my camera too)...
    -both are in the same cabinet. each experiment lasts 4 weeks.

    both readings came out at that RH% i mentioned...

    but its just a testing i did, just in case i have to travel, & cannot simply lug my dry cabinet along wherever i go.

  8. #28

    Default Re: Q: about silica gel

    Quote Originally Posted by spheredome View Post
    Can you advise further how to regulate an airtight environment to 39%? Thanks
    My airtight container with dry agent is 14-19% humidity (reading from digital hygrometer).

    But my equipments are happy.

    you could be putting way too much drying agent...

  9. #29
    Moderator Octarine's Avatar
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    Default Re: Q: about silica gel

    Quote Originally Posted by buddha baby View Post
    i did an experiment using digital hygrometer ...
    -1st week, using the 'sd' dehumidifier in the dry box, with my camera &
    -5th week, using the 'sd' dehumidifier in ziplock bag (with my camera too)...
    -both are in the same cabinet. each experiment lasts 4 weeks.
    both readings came out at that RH% i mentioned...
    but its just a testing i did, just in case i have to travel, & cannot simply lug my dry cabinet along wherever i go.
    Refreshing systematic testing seems the bags of dehumidifier are of the right size for the small volume of air.
    Personally, I don't drag any dehumidifying stuffs around when traveling. Traveling is the opposite of storing, plenty of fresh air and sun, no need for anything related to long term storage.
    EOS

  10. #30

    Default Re: Q: about silica gel

    You certainly did a good comparison. Thanks

    OK, I am now trying this and see the result too. Then I can figure out adjustment in my tupperware.

    - 2 layers of Raynolds ziplock (non deflate, leave air inside).
    - 1 sachet Fairprice Jumbo dehumidifier.
    - 1x videocam pouch and videocam that has been in open for 1 week (forgotten to keep).
    - 1 hygrometer inside, wire probe located to the pouch and vcam end.

    Quote Originally Posted by buddha baby View Post
    i did an experiment using digital hygrometer ...

    -1st week, using the 'sd' dehumidifier in the dry box, with my camera &
    -5th week, using the 'sd' dehumidifier in ziplock bag (with my camera too)...
    -both are in the same cabinet. each experiment lasts 4 weeks.

    both readings came out at that RH% i mentioned...

    but its just a testing i did, just in case i have to travel, & cannot simply lug my dry cabinet along wherever i go.

  11. #31

    Default Re: Q: about silica gel

    Quote Originally Posted by Octarine View Post
    Refreshing systematic testing seems the bags of dehumidifier are of the right size for the small volume of air.
    Personally, I don't drag any dehumidifying stuffs around when traveling. Traveling is the opposite of storing, plenty of fresh air and sun, no need for anything related to long term storage.
    oh, i just worried that if i go traveling during winter or in some remote places like acheh or afhganistan...

  12. #32

    Default Re: Q: about silica gel

    Quote Originally Posted by spheredome View Post
    You certainly did a good comparison. Thanks

    OK, I am now trying this and see the result too. Then I can figure out adjustment in my tupperware.

    - 2 layers of Raynolds ziplock (non deflate, leave air inside).
    - 1 sachet Fairprice Jumbo dehumidifier.
    - 1x videocam pouch and videocam that has been in open for 1 week (forgotten to keep).
    - 1 hygrometer inside, wire probe located to the pouch and vcam end.

    i feel that the those box dehumidifier can be too much for a small space...i think sachet may be a better option.

  13. #33
    Moderator Octarine's Avatar
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    Default Re: Q: about silica gel

    Quote Originally Posted by buddha baby View Post
    oh, i just worried that if i go traveling during winter or in some remote places like acheh or afhganistan...
    Check the climate statistics for that location. Afghanistan is a bit bigger than SG, please specify further. But still, better get good camera bag, don't waste time with silica gel or other stuffs.
    EOS

  14. #34

    Default Re: Q: about silica gel

    Quote Originally Posted by Octarine View Post
    Traveling is the opposite of storing, plenty of fresh air and sun, no need for anything related to long term storage.

    Does that mean if I shoot everyday, I don't need to get a dry cabinet or dry box?

  15. #35

    Default Re: Q: about silica gel

    Quote Originally Posted by Timolol View Post
    Just curious, if you don't mind, where you got this info from? Would it corrode metals and other stuff in normal use, or does the material have to come into direct contact with the desiccant for corrosion to occur?
    Quote Originally Posted by spheredome View Post

    Yes, thirsty hippo it will not damage material unless the liquid comes into contact.
    I will always throw 1 pack of thirsty hippo in my lugguage before storing.
    The dessicant in thirsty hippo is calcium chloride. It corrodes when the material in
    contact with moist calcium chloride.

  16. #36

    Default Re: Q: about silica gel

    Quote Originally Posted by aquilaa View Post
    The dessicant in thirsty hippo is calcium chloride. It corrodes when the material in
    contact with moist calcium chloride.
    But hor, wikipedia says


    Calcium Chloride is also commonly used as an additive in swimming pool water as it increases the "Calcium Hardness" value for the water. Low Calcium Hardness values in pool water cause pool water to be corrosive on equipment, pumps and metal fittings.
    Wiki

  17. #37

    Default Re: Q: about silica gel

    This chloride thing.... Don't know lah.

    You all go and pour the dissolved liquid from thirsty hippo to you camera and clothing and hands. Then let me know the outcome

    You will then notice that is not ordinary liquid, it is very soapy, slimy and does not evaporate easily.
    Last edited by spheredome; 5th October 2009 at 09:23 PM.

  18. #38

    Default Re: Q: about silica gel

    Quote Originally Posted by Timolol View Post
    But hor, wikipedia says


    Wiki
    [QUOTE=spheredome;5495643]This chloride thing.... Don't know lah.

    Make sure that the dessicant not in contact with the gears and dry box, then should be OK.

  19. #39

    Default Re: Q: about silica gel

    Quote Originally Posted by spheredome View Post
    This chloride thing.... Don't know lah.

    You all go and pour the dissolved liquid from thirsty hippo to you camera and clothing and hands. Then let me know the outcome

    You will then notice that is not ordinary liquid, it is very soapy, slimy and does not evaporate easily.
    Woah you might as well ask me to throw the camera into the swimming pool!

  20. #40

    Default Re: Q: about silica gel

    Quote Originally Posted by spheredome View Post
    This chloride thing.... Don't know lah.

    You all go and pour the dissolved liquid from thirsty hippo to you camera and clothing and hands. Then let me know the outcome

    You will then notice that is not ordinary liquid, it is very soapy, slimy and does not evaporate easily.
    So simply put.... don't use it for your travel drying agent. If you have a simple box that's upright and stationary... the CaCl agent base won't be a problem.
    better to be Socrates dissatisfied than a fool satisfied -J.S. Mill
    1000D. My works

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