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The table shows how the two systems rate high-brightness papers, but there is no simple way to convert between the two systems because the test methods are so different. [4] The ISO rating is higher and can be over 100. This is because contemporary white paper incorporates fluorescent whitening agents (FWA). Because the ISO standard only ...
Reverse graffiti [note 1] is a method of creating temporary or semi-permanent images on walls or other surfaces by removing dirt from a surface. It can also be done by simply removing dirt with the fingertip from windows or other dirty surfaces, such as writing "wash me" on a dirty vehicle.
Active oxygen bleaching agents include sodium perborate, sodium percarbonate, sodium perphosphate, sodium persulfate, and urea peroxide. These compounds release hydrogen peroxide during the wash cycle, but the release of hydrogen peroxide is low when these compounds are used in temperatures below 45 °C (113 °F).
Let it set for a few minutes and then wipe clean with a lint-free cloth or paper towel. One note: Don’t use Windex on your wood furniture, as the ammonia may damage it. Clean Light Fixtures
The pulp produced up to this point in the process can be bleached to produce a white paper product. The chemicals used to bleach pulp have been a source of environmental concern, and recently the pulp industry has been using alternatives to chlorine , such as chlorine dioxide , oxygen , ozone and hydrogen peroxide .
SBB (C2S) construction: 1 - Coating 2 - Bleached chemical pulp 1 - Coating Not drawn to scale. Solid bleached board (SBB) or solid bleached sulphate (SBS) is a virgin fibre grade of paperboard.
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Paper chemicals designate a group of chemicals that are used for paper manufacturing, or modify the properties of paper. These chemicals can be used to alter the paper in many ways, including changing its color and brightness, or by increasing its strength and resistance to water. [1] The chemicals can be defined on basis of their usage in the ...