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  1. #11
    Mainecoonmaniac's Avatar
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    Because gum arabic is a food product, it can go moldy or bad so handle it as such. Some gum printers add thymol as a preservative. I think you only should be concerned if your product has been opened.
    "Photography, like surfing, is an infinite process, a constantly evolving exploration of life."
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  2. #12

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    Happy for you. Use 0.5g sodium benzoate per 100g of dry powdered gum - just to be on the safe side...

    Regards,
    Loris.

  3. #13

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    BTW, to clarify: There's no need to add a preservative for dry gum tears or powder, you only need it for the solutions.

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