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pH indicators: a graphic view. A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties. [1]
Airbus SE (/ ˈ ɛər b ʌ s / AIR-buss; French: ⓘ; German: [ˈɛːɐ̯bʊs] ⓘ; Spanish:) is a European [8] aerospace corporation. The company's primary business is the design and manufacturing of commercial aircraft but it also has separate defence and space and helicopter divisions.
The Mercedes-Benz W123 is a range of executive cars produced by German manufacturer Mercedes-Benz from November 1975 to January 1986. The W123 models surpassed their predecessor, the Mercedes-Benz W114, as the most successful Mercedes, selling 2.7 million units before production ended in the autumn of 1985 for the saloon/sedan versions and January 1986 for coupés and estates/station wagons.
As a result of the increasing regulatory restrictions on the sale and distribution of pseudoephedrine, pharmaceutical firms have reformulated medications to use alternative compounds, particularly phenylephrine, even though its efficacy as an oral decongestant has been demonstrated to be indistinguishable from placebo. [136]
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