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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 ...
Wall mopping, a simple and effective method of cleaning the walls of your home, is a great way to keep walls clean and paint fresh, keep allergens like dust at bay, and prevent mold or mildew ...
Elemental chlorine free (ECF) is a technique that uses chlorine dioxide for the bleaching of wood pulp.It does not use elemental chlorine gas during the bleaching process and prevents the formation of dioxins and dioxin-like compounds, carcinogens.
The main objective of cleaning is to achieve clarity of surface detail. [57] Books and documents may be subjected to different types of cleaning. Conservators may clean dust from paper and leather with a soft brush or cloths, a specialized vacuum cleaner, nonchemical vulcanized rubber sponges, or nonabrasive erasing materials such as vinyl erasers.
Here, the experts explain how to clean walls the right way. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...
These substances polymerize in the paper and result in the construction of a strengthening network. Cationic starch. To enhance the paper's strength, cationic starch is added to wet pulp in the manufacturing process. Starch has a similar chemical structure as the cellulose fibre of the pulp, and the surface of both the starch and fibre are ...
Chlorine releasing solutions, such as liquid bleach and solutions of bleaching powder, can burn the skin and cause eye damage, [2] especially when used in concentrated forms. As recognized by the NFPA, however, only solutions containing more than 40% sodium hypochlorite by weight are considered hazardous oxidizers.
One safe and effective means to clean a roof is an electric agricultural sprayer system, as originally developed in Florida, USA in the early 1990s. [6] The equipment is used to apply a cleaning solution (typically containing bleach) that kills the algae, bacteria, mold, mildew, moss, fungus and other organic organisms growing on the roof.
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