Mountboard - Cream 1.5mm 402

The surface and backing papers

* Made from chemically-treated pulp using pH sizing and lignin-free, except for Metallics which are not acid-free.
* Blue wool scale (BWS) minimum rating 3+
* Individual BWS ratings are marked on the reverse side of every sheet.
* Buffered with calcium carbonate.*
* The water-soluble extracts are minimal i.e. chloride below 0.05%, sulphate below 0.25%. For extra defence it contains a buffer of calcium carbonate to guard against contamination by air-borne acid for the life of the board.

The Core

* High-quality alpha cellulose. Lignin-free and bright white throughout.
* Buffered with calcium carbonate.*
* Passes the Silver Tarnish Test and Photographic Activity Test.

The adhesive

* Aqeous PVA with neutral pH.
* Buffered with calcium carbonate.*
* Is plasticiser-free.

815x1120mm

1500 micron

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