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Kai (1985) found peroxide, chlorite, and hypochlorite systems Tiffany Elsa Peretti Round earrings be effective for bleaching blue-stained aspen (Populus tremuloides Michx.). Evans et al. (2007) reported that sodium hypochlorite treatments provided the best bleaching of blue-stained lodgepole pine sapwood with only moderate heartwood discoloration relative to other bleaching treatments. The highest concentration tested (10.5%) Tiffany Elsa Peretti Round pendant the greatest bleaching effect when sprayed on the samples and airdried for 24 hours. Unlike peroxide bleaching, hypochlorite bleaching was effective at low temperatures (20C). This is appealing for in-line use, as a lengthy heating step can thus be avoided. Recent preliminary work at FPInnovations - Forintek Division (unpublished) showed that UV light could partially decolorize blue stain and also induce the typical aged pine color that helps mask residual blue stain. UV and visible light Tiffany Elsa Peretti Sevillana bracelet strongly absorbed by the fungal melanins that cause blue stain (Zink and Fengel 1990), as well as by wood itself. While exposure to UV and visible light for extended periods will damage wood, a short exposure period, in combination with chemical bleaching, may be able to decolorize blue stain without significantly damaging the wood. Bleaching or light exposure may alter the surface chemistry of the wood, which in turn could influence coating adhesion. Changes in surface chemistry caused by weathering can reduce coating adhesion in several species (Williams et al. 1990, Evans et al. 1997, Jirous-Rajkovic et al. 2007).