Whitecore
Our Conservation Whitecore mountboard range is available in 1400 micron thickness with selected colours available in 750, 2400 and 3500 micron.
Conservation and Whitecore Specification
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.
* Minimum 3% by weight
Accelerated ageing test
TAPPI T.509 SU68
Years
Unaged - pH8.9
100 -pH8.9
200 -pH8.9
300 -pH8.9
All Arqadia Conservation boards fully comply to FATG Conservation level.
Whitecore boards meet FATG Standard level