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Acid Free Mats?

Buffered pH Neutral vs Acid Free vs Conservation Acid Free

What does Acid Free mean? The term "Buffered pH Neutral" and "Acid Free" are often used interchangeably. They mean the same thing.

  • Buffered = the process of treating naturally acidic paper
  • pH = measure of acidity
  • Neutral = without/removed

So a Buffered pH Neutral mat is a mat that has been treated to remove the acidic nature of paper. These mats are acid free. That does not mean they are 'Conservation Grade, Acid Free'. 

Conservation mats are treated to remove the acid from paper and another harmful component called Lignin. By removing both the acidic properties and lignin from the mats, they now meet the standards for being a Conservation Grade, Acid Free mat. 

All of the mats we sell are acid-free:

  • Standard Mats are acid free with a protective lifespan of 7-12 years. Suitable for most everyday matting and framing needs.
  • Conservation Mats are acid free & lignin free and have a protective lifespan of 50+ years. Recommended for photography, fine art prints, limited editions, valuable documents