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  2. USP Controlled Room Temperature - Wikipedia

    en.wikipedia.org/.../USP_Controlled_Room_Temperature

    The USP Controlled Room Temperature is a series of United States Pharmacopeia guidelines for the storage of pharmaceuticals; [1] the relevant omnibus standard is USP 797. [2] [3] Although 100% compliance remains challenging for any given facility, [4] the larger protocol may be regarded as constituting a form of clean room [5] which is included in a suite of best practices.

  3. Treasury regulations - Wikipedia

    en.wikipedia.org/wiki/Treasury_regulations

    Treasury Regulations are the tax regulations issued by the United States Internal Revenue Service (IRS), a bureau of the United States Department of the Treasury.These regulations are the Treasury Department's official interpretations of the Internal Revenue Code [1] and are one source of U.S. federal income tax law.

  4. Room temperature - Wikipedia

    en.wikipedia.org/wiki/Room_temperature

    In contrast, ambient temperature is the actual temperature, as measured by a thermometer, of the air (or other medium and surroundings) in any particular place. The ambient temperature (e.g. an unheated room in winter) may be very different from an ideal room temperature .

  5. Air pollutant concentrations - Wikipedia

    en.wikipedia.org/wiki/Air_pollutant_concentrations

    In most other nations, the reference ambient temperature for pollutant limits may be 0 °C or other values. Although ppmv and mg/m 3 have been used for the examples in all of the following sections, concentrations such as ppbv (i.e., parts per billion by volume), volume percent, mole percent and many others may also be used for gaseous pollutants.

  6. Tax returns in the United States - Wikipedia

    en.wikipedia.org/wiki/Tax_returns_in_the_United...

    Information returns are reports used to transmit information about income, receipts or other matters that may affect tax liabilities. For example, Form W-2 and Form 1099 are used to report on the amount of income that an employer, independent contractor, broker, or other payer pays to a taxpayer.

  7. Operating temperature - Wikipedia

    en.wikipedia.org/wiki/Operating_temperature

    An operating temperature is the allowable temperature range of the local ambient environment at which an electrical or mechanical device operates. The device will operate effectively within a specified temperature range which varies based on the device function and application context, and ranges from the minimum operating temperature to the maximum operating temperature (or peak operating ...

  8. Income tax in the United States - Wikipedia

    en.wikipedia.org/wiki/Income_tax_in_the_United...

    Congress later further raised taxes, and by the end of the war, the income tax constituted about one-fifth of the revenue of the federal government. To collect these taxes, Congress created the Office of the Commissioner of Internal Revenue within the Treasury Department. [78] The federal income tax would remain in effect until its repeal in ...

  9. Internal Revenue Code - Wikipedia

    en.wikipedia.org/wiki/Internal_Revenue_Code

    With respect to the federal income tax on individuals, the 1954 Code imposed a progressive tax with 24 income brackets applying to tax rates ranging from 20% to 91%. For example, the following is a schedule showing the federal marginal income tax rate imposed on each level of taxable income of a single (unmarried) individual under the 1954 Code: