Archival Mist and Bookkeeper FAQ


IsArchival Mist® and Bookkeeper® safe for colors and inks?

Both Archival Mist® and Bookkeeper® contain no solvents and no water. Independent testing of hundreds of ink and paper samples from the mid-nineteenth century to the present found that both products do not dissolve inks or colors, or cause them to run or bleed. In a few cases, the change in pH from acid to alkaline, caused by Archival Mist® or Bookkeeper®, may affect the shade of a color. But even pH sensitive colors are often not affected unless the paper becomes wet or in very humid conditions. Archival Mist® & Bookkeeper® should not be used on blueprints or other similar materials - raising the pH may affect the colors in these documents.

Are the ingredients in Archival Mist® or Bookkeeper® hazardous to my health?

Archival Mist® & Bookkeeper® are non-hazardous, non-toxic, and non-flammable. Both products are environmentally safe. They dry odor-free, and can be used in spaces with normal ventilation. When treating any artifact with a high commercial value, you should consult a professional conservator before treatment.

Can I use Archival Mist® or Bookkeeper® on glossy or encapsulated materials?

Both products protect glossy materials, but do not penetrate the plastic coating of encapsulated materials. The alkaline coating the product leaves on nonabsorbent materials (photographs) can be wiped off with a soft dry cloth.

Does Archival Mist® or Bookkeeper® have a shelf life?

Both products can be stored indefinitely and will not lose effectiveness.

How does Archival Mist® & Bookkeeper® protect paper?

Archival Mist® and Bookkeeper® deposit a safe, non-toxic alkaline buffer into the structure of paper that continues to work over the life of the paper. This buffer material neutralizes acids that can weaken paper and cause it to become brittle. Paper treated with either product will last at least three to five times longer than if left untreated.

Is Archival Mist® and Bookkeeper® safe for photographs?

Photographs can safely be stored with treated materials with no adverse effect from the treatment. The Image Permanence Institute tested both products and determined that they satisfy the requirements of the Photographic Activity Test (PAT). Neither product is intended for use on photographs, nor will photographs benefit from the products. If accidentally sprayed on a photograph, a light coating of material may be noticeable. Use a soft, dry cloth to remove the coating, but take care not to scratch the surface.

What materials will Archival Mist® and Bookkeeper® protect?

Both Archival Mist® and Bookkeeper® are designed to protect paper-based materials, including letters, envelopes, newsprint, certificates, awards, artwork, books, and pamphlets. Neither product contains solvents, nor will they affect inks, adhesives, leather, plastic, metals or fabrics. If Archival Mist® or Bookkeeper® is sprayed on non-absorbent materials (tabletops, plastic, etc.) a light coating of alkaline material will be noticeable. This can be cleaned with a soft dry or slightly damp cloth.

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  • Archival Mist - Large 5.3 oz. Item# C-AM-5
    (6 reviews)

    Archival Mist - Large 5.3 oz.

    Item# C-AM-5
    Archival Mist gently neutralizes the destructive acids in paper and deposits a safe, permanent alkaline buffer to protect against future acid attack
    Reg Price: $49.00
    Sale Price: $37.95
    Availability: Ground orders usually ship in 2-3 business days. Add To Cart to view ship rates and delivery dates.
    Reg Price: $49.00
    Sale Price: $37.95
  • Bookkeeper Archival Spray 5.3 oz Item# C-AM-5B

    Bookkeeper Archival Spray 5.3 oz

    Item# C-AM-5B
    Bookkeeper® gently neutralizes the destructive acids in paper and deposits a safe, permanent alkaline buffer to protect against future acid attack Same formula as Archival Mist.
    Price: $37.95
    Availability: Ground orders usually ship in 2-3 business days. Add To Cart to view ship rates and delivery dates.
    Price: $37.95