PETERBORO CONSERVATION - (PPFA CLASS II)
Peterboro Conservation is truly our flagship product and represents the best value in conservation matboards.
SOME KEY FACTS ABOUT PETERBORO CONSERVATION
1. The Core
We use high grade virgin Alpha Cellulose as the main ingredient in our conservation core. Alpha Cellulose can be distilled from cotton or wood,
the higher the Alpha Cellulose content the higher the purity of the board. We specify that PETERBORO CONSERVATION core must have more than 90% Alpha Cellulose, industry specifications call for no less then 84 %.
2. Chemical Ingredients
The conservation quality of a mat can often be affected by the chemical impurities within its materials. For instance the level of iron and
copper within the matboard can create tarnishing and discoloration of the mat while the sulphur content can raise acidic levels that attack both mat and artwork. In the manufacture of PETERBORO CONSERVATION we strictly control the level of chemical ingredients to ensure that they meet or exceed the PPFA and Fine Art Trade Guild standards for chemical composition.
3. Surface Paper
To reduce color fade and bleed PETERBORO CONSERVATION uses pigments for surface
paper coloration. Our pigments are specified to meet or exceed the fade and bleed test requirements outlined by the Fine Art Trade Guild and PPFA standards. Independent testing shows that PETERBORO CONSERVATION exceeds these requirements.
4. Backing Paper
Our backing paper is 100 % virgin fiber, buffered with calcium carbonate at a 3% minimum reserve, no optical brighteners, and a smooth finish with even coloration. Our backing paper meets or exceeds the standards as set out by both the PPFA and the Fine Art Trade Guild.
5. Quality
Independent QC benchmarking shows that PETERBORO CONSERVATON has one of the highest standards of consistent quality in the market.
What does this testing and analysis mean to the framer?
It means that if you are using Peterboro Conservation matboard to frame valuable art
you can be sure the product will perform to the high standards our industry expects of a conservation grade matboard.
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KEY SPECIFICATIONS:
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PETERBORO CONSERVATION RESULTS
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HIGH-ALPHA PULP
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Bleached wood pulp that has an Alpha Cellulose content not less than 84% (Source: Pulp and Paper Services)
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90.5%
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LIGNIN
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Kappa number of 5 or less
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< 1
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REDUCIBLE SULPHUR
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Less than 0.0008%
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Less than 00008%
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METALLIC CONTENT
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Iron not to exceed 150ppm
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1.26ppm
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Copper not to exceed 6ppm
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0.19ppm
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pH
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Alkaline filler, calcium carbonate buffered. Usually in the range 8.5
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8.70
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The Alkaline reserve should be about 2% and the maximum 5% by weight. As carbonate filler may be source of Impurities, excess is not desirable.
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3.5%
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SIZING
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Rosin-alum sizing shall not be used
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Negative
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The conclusion:
Peterboro conservation is a conservation mat that delivers some of the highest quality standards in the market.
