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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 ...
The diameter of the powder used is relative to the density (g/m 2) of the stock (paper or board) being printed. For 150 g/m 2 paper the ideal anti-set-off spray powder would be 15 μm in diameter, for 200 g/m 2 20 μm, through to 70 μm for heavy board (700 g/m 2). Most manufactures of spray powder offer both coated and uncoated powders.
The 1:99 Concert was a fund raiser concert for victims of the 2003 SARS outbreak at the Hong Kong Stadium.The name 1:99 came from the bleach to water ratio that health officials recommended for anti-SARS cleaning solution.
[44] [45] It may be made by diluting household bleach as appropriate (normally 1 part bleach to 9 parts water). [46] Such solutions have been demonstrated to inactivate both C. difficile [44] and HPV. [47] "Weak chlorine solution" is a 0.05% solution of hypochlorite used for washing hands, but is normally prepared with calcium hypochlorite ...
Sodium hypochlorite (NaClO), usually as a 3–6% solution in water, usually called "liquid bleach" or just "bleach". Historically called "Javel water" (French: eau de Javel). It is used in many households to whiten laundry, disinfect hard surfaces in kitchens and bathrooms, treat water for drinking, and keep swimming pools free of infectious ...
Powdered TAED is stabilized by granulation with the aid of the sodium salt of carboxymethylcellulose (Na-CMC), [10] which are sometimes additionally coated blue or green. . Despite the relatively low solubility of TAED in cool water, (1 g/L at 20 °C), the granulate dissolves rapidly in the washing l
Percent active chlorine is a unit of concentration used for hypochlorite-based bleaches.One gram of a 100% active chlorine bleach has the quantitative bleaching capacity as one gram of free chlorine. [1]
The problem can occur with most types of printing, and is avoided by the use of slipsheets between copies (so any ink transfer occurs onto discardable paper) or anti-set-off spray powder. The term in offset printing also refers to the unwanted transfer of ink to rollers and friction points throughout the printing press. Ink that is not properly ...