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The purplish-black color of solid potassium permanganate, and the intensely pink to purple color of its solutions, is caused by its permanganate anion, which gets its color from a strong charge-transfer absorption band caused by excitation of electrons from oxo ligand orbitals to empty orbitals of the manganese(VII) center.
The Schuster Laboratory, University of Manchester (a physics laboratory). A laboratory (UK: / l ə ˈ b ɒr ə t ər i /; US: / ˈ l æ b r ə t ɔːr i /; colloquially lab) is a facility that provides controlled conditions in which scientific or technological research, experiments, and measurement may be performed.
Carpentry tools recovered from the wreck of the Mary Rose, a 16th-century sailing ship—from the top: a mallet, brace, and plane, the handles of a T-auger and gimlet, possibly the handle of a hammer, and a rule.
A nitrogen generator Bottle of 4Å molecular sieves. Pressure swing adsorption provides separation of oxygen or nitrogen from air without liquefaction. The process operates around ambient temperature; a zeolite (molecular sponge) is exposed to high pressure air, then the air is released and an adsorbed film of the desired gas is released.
ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories is the main standard used by testing and calibration laboratories. In most countries, ISO/IEC 17025 is the standard for which most labs must hold accreditation in order to be deemed technically competent.
During Gillingham F.C.'s 1984–85 season, they competed in the Football League Third Division, the third tier of the English football league system.It was the 53rd season in which Gillingham competed in the Football League, and the 35th since they were voted back into the league in 1950.
The latest official IPA chart, revised in 2020. Here is a basic key to the symbols of the International Phonetic Alphabet. For the smaller set of symbols that is sufficient for English, see Help:IPA/English. Several rare IPA symbols are not included; these are found in the main IPA article or on the extensive IPA chart.
Nationally Recognized Testing Laboratory is the term used by the United States Occupational Safety and Health Administration to identify third-party organizations that have the necessary qualifications to perform safety testing and certification of products covered within OSHA and each organization's scopes.