{"product_id":"museum-archival-backing-boards","title":"Archival Backing Boards","description":"\u003cp\u003e\u003cspan\u003eAn economically priced backing board in natural white\/grey-blue and in grey-blue\/white\/grey-blue, specially developed for conservation-quality picture framing and mounting. The board is free of optical brightening agents and has passed the Photographic Activity Test (PAT) in accordance with ISO 18916.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSpecifications: \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAn economically priced backing board in natural white\/grey-blue and in\u003cbr\u003egrey-blue\/white7grey-blue, specially developed for conservation-quality picture\u003cbr\u003eframing and mounting. The board is free of optical brightening agents and has\u003cbr\u003epassed the Photographic Activity Test (PAT) in accordance with ISO 18916.\u003cbr\u003eSizes ex-stock: 101 x 141 cm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cstrong\u003eMaterial characteristics: • 100% bleached cellulose\u003c\/strong\u003e\u003cbr\u003e• without the usage of recycling fibres\u003cbr\u003e• free of wooden fibres\u003cbr\u003e• Kappa level \u0026lt; 5 = lignin-free\u003cbr\u003e• pH 7.5 - 10.0 = acid-free (in accordance with ISO 6588-1:2020)\u003cbr\u003e• alkaline buffer \u0026gt; 3% natural calcium carbonate (GCC)\u003cbr\u003e• sizing: neutral\/synthetic (without alum additive)\u003cbr\u003e• top surface sizing: Cobb60 in accordance with ISO 535 \u0026lt; 25\u003cbr\u003e• without optical brightening agents\u003cbr\u003e• light-fastness approx. 7 – 8 (= extremely good) in accordance with the wool\u003cbr\u003escale (EN ISO 105-B02)\u003cbr\u003e• no bleeding in accordance with DIN ISO 16245:2012\u003cbr\u003e• special surface strengthening (dirt-resistant and erasable)\u003cbr\u003e• Photographic Activity Test (PAT) passed in accordance with ISO\u003cbr\u003e18916:2007\u003cbr\u003e• dispersion glue free of solvents and plasticizers (softening agents)\u003cbr\u003e• pH approx. 7.0\u003cbr\u003e• Photographic Activity Test (PAT) passed in accordance with ISO\u003cbr\u003e18916:2007.\u003c\/span\u003e\u003c\/p\u003e","brand":"Micrographics Data Online","offers":[{"title":"natural white\/grey-blue","offer_id":44387936567491,"sku":"","price":0.0,"currency_code":"SGD","in_stock":true},{"title":"grey-blue\/white\/grey-blue","offer_id":44387936600259,"sku":"","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0538\/7390\/1763\/files\/Backingboard07-naturalwhite_grey-blue.jpg?v=1747755770","url":"https:\/\/micrographicsdataonline.com\/zh\/products\/museum-archival-backing-boards","provider":"Micrographics Data Online","version":"1.0","type":"link"}