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  2. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    Emission standards are the legal requirements governing air pollutants released into the atmosphere. Emission standards set quantitative limits on the permissible amount of specific air pollutants that may be released from specific sources over specific timeframes. They are generally designed to achieve air quality standards and to protect ...

  3. List of ISO standards - Wikipedia

    en.wikipedia.org/wiki/List_of_ISO_standards

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  4. Air quality index - Wikipedia

    en.wikipedia.org/wiki/Air_quality_index

    An air quality index (AQI) is an indicator developed by government agencies [1] to communicate to the public how polluted the air currently is or how polluted it is forecast to become. [2] [3] As air pollution levels rise, so does the AQI, along with the associated public health risk. Children, the elderly and individuals with respiratory or ...

  5. Indoor air quality - Wikipedia

    en.wikipedia.org/wiki/Indoor_air_quality

    Portable room air cleaners with HEPA filters can be used if ventilation is poor or outside air has high level of PM 2.5. [122] Air filters are used to reduce the amount of dust that reaches the wet coils. [citation needed] Dust can serve as food to grow molds on the wet coils and ducts and can reduce the efficiency of the coils. [citation needed]

  6. National Standards of the People's Republic of China

    en.wikipedia.org/wiki/National_Standards_of_the...

    A Chinese standard code has three parts: the prefix, the sequential number, and the year number. For example, GB 2312-1980 refers to the national compulsory standard (GB), sequential number 2312, revision year 1980.

  7. National Standardization Agency - Wikipedia

    en.wikipedia.org/wiki/National_Standardization...

    Facilitating stakeholders in developing and maintaining Indonesian National Standards, known as SNI (Standar Nasional Indonesia) in Indonesian. The process is carried out by the SNI Formulation Technical Committee consisting of representatives from producers, consumers, experts / universities, and the government.

  8. Standard operating procedure - Wikipedia

    en.wikipedia.org/wiki/Standard_operating_procedure

    The word "standard" could suggest that only one (standard) procedure is to be used across all units. [citation needed] The term is sometimes used facetiously to refer to practices that are unconstructive, yet the norm. In the Philippines, for instance, "SOP" is the term for pervasive corruption within the government and its institutions. [3] [4]

  9. British Standards - Wikipedia

    en.wikipedia.org/wiki/British_Standards

    Formally, as stated in a 2002 memorandum of understanding between the BSI and the United Kingdom Government, British Standards are defined as: "British Standards" means formal consensus standards as set out in BS 0-1 paragraph 3.2 and based upon the principles of standardisation recognised inter alia in European standardisation policy.