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Replies: 18 / Views: 3,851 |
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Pillar of the Community
United States
716 Posts |
I live in a very humid area on the East coast. I am always a little paranoid about the tightness of TPG capsules. Here is my way to store my expensive coins. A zipper bag plus a renewable silica gel packet. The dried packet should be 5.9 gram; when it's saturated with moisture, it should be 7.0 gram. I can keep track by weighing the whole package.   
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Bedrock of the Community
 United States
12477 Posts |
That seems like an effective system. If I remember correctly, the slabs are sonically sealed, so moisture infiltration should not be an issue. My main concern for slabbed coins would be temperature and UV exposure... ...and falling in a bucket of acid. 
In Memory of Crazyb0 12-26-1951 to 7-27-2020 In Memory of Tootallious 3-31-1964 to 4-15-2020 In Memory of T-BOP 10-12-1949 to 1-19-2024
Edited by spru 08/05/2018 11:22 pm
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Bedrock of the Community
United States
74000 Posts |
That's a excellent way to store coins! Using silica gel packs work great, and will help keep the moisture out.
Errers and Varietys.
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Pillar of the Community
 United States
5667 Posts |
That's a great way to store them in a humid climate. I've always wondered how to tell if my silica packs are still dry, and weighing them is a great idea!
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Bedrock of the Community
United States
74000 Posts |
Zurie, the good thing about silica gel packs, is you can find them easily, even in beef jerky snacks. I try to keep them, so I can use them for stuff like this (I make sure they're clean of course. not greasy).
Errers and Varietys.
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Bedrock of the Community
 United States
12477 Posts |
Yeah, I don't think I would use an oxygen absorber from a bag of jerky (probably not silica gel). You can buy them straight up, unused, at a low price. P.S. I would only use those from bacon jerky bags. 
In Memory of Crazyb0 12-26-1951 to 7-27-2020 In Memory of Tootallious 3-31-1964 to 4-15-2020 In Memory of T-BOP 10-12-1949 to 1-19-2024
Edited by spru 08/06/2018 01:42 am
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Moderator
 United States
56855 Posts |
How about a Food Saver vacuum bag? John1 
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Pillar of the Community
United States
5825 Posts |
Food storage bags are soft plastic. Is it possible that they are made with PVC?
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Rest in Peace
United States
18456 Posts |
@ OP, your method sounds good .I use a lot of small silica gel packs myself ,but not for protecting slabs . I put them in my 2x2 holder boxes to keep moisture out of my BU Lincoln Memorials . Also throw a few silica packs in my 2 1/2 gallon zip lock bags that I keep all my loose leaf books loaded with most of my coins . 
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Pillar of the Community
 United States
5029 Posts |
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Rest in Peace
United States
18456 Posts |
Quote: Food storage bags are soft plastic. Is it possible that they are made with PVC? There has been many threads about food storage bags in the last few years . Virtually all say if it's safe for food it's safe for coins . 
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Pillar of the Community
 United States
716 Posts |
Silica gel packs are very cheap; $10 for 50 packs; you can reactivate them by heating in the oven at 220F for a few hours;
I am looking for a ziplock bag with opening on the narrow side. The one showed here is zipping on the wide size which is not ideal.
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Bedrock of the Community
United States
20753 Posts |
Why not just buy a Dehumidifier. I live in a high humidity area and I have one that keeps my entire house at low humidity all the time.
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Moderator
 United States
56855 Posts |
Quote: I am looking for a ziplock bag with opening on the narrow side Wal-mart has them,I think they call them snack size. John1 
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Rest in Peace
United States
10625 Posts |
Quote: I live in a very humid area on the East coast. Ah, so Podunk is on the east coast...  You should never reach full saturation of the silica packs if your zip-loc bag is sealed. But, hey, you never know...
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Moderator
 United States
188213 Posts |
Quote: If I remember correctly, the slabs are sonically sealed, so moisture infiltration should not be an issue. They are not perfectly sealed. Air, moisture, and other particulates can get in over time.
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Replies: 18 / Views: 3,851 |