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  2. Testing and inspection of diving cylinders - Wikipedia

    en.wikipedia.org/wiki/Testing_and_inspection_of...

    [citation needed] When a cylinder is manufactured, its specification, including manufacturer, working pressure, test pressure, date of manufacture, capacity and weight are stamped on the cylinder. [1] Most countries require diving cylinders to be checked on a regular basis. This usually consists of an internal visual inspection and a ...

  3. Check the Expiration Dates on These 7 Items When ... - AOL

    www.aol.com/finance/check-expiration-dates-7...

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  4. Expiration date - Wikipedia

    en.wikipedia.org/wiki/Expiration_date

    An expiration date or expiry date is a previously determined date after which something should no longer be used, either by operation of law or by exceeding the anticipated shelf life for perishable goods. Expiration dates are applied to some food products and other products like infant car seats where the age of the product may affect its safe ...

  5. Propane refrigeration - Wikipedia

    en.wikipedia.org/wiki/Propane_refrigeration

    Propane refrigeration is a type of compression refrigeration. Propane (R290) has been used successfully in industrial refrigeration for many years, and is emerging as an increasingly viable alternative for homes and businesses. Propane's operating pressures and temperatures are well suited for use in air conditioning equipment, but because of ...

  6. Don't listen to expiration dates on food labels - AOL

    www.aol.com/lifestyle/2016-08-22-dont-listen-to...

    Most consumers use expiration dates as an indicator of food safety, but they aren't always what they seem. ... To learn more about food items you may want to stay aware of check out this: Show ...

  7. Shelf life - Wikipedia

    en.wikipedia.org/wiki/Shelf_life

    The expiration date of pharmaceuticals specifies the date the manufacturer guarantees the full potency and safety of a drug. Most medications continue to be effective and safe for a time after the expiration date. A rare exception is a case of renal tubular acidosis purportedly caused by expired tetracycline. [9]

  8. Bottled gas - Wikipedia

    en.wikipedia.org/wiki/Bottled_gas

    However, in contrast, what the United States calls liquefied petroleum gas is known generically in the United Kingdom as 'LPG'; and it may be ordered using by one of several Trade names, or specifically as butane or propane depending on the required heat output.

  9. Some at-home COVID tests have expiration dates changed ... - AOL

    www.aol.com/home-covid-tests-expiration-dates...

    First, check to see if the expiration date got an extension by the U.S. Food and Drug Administration. If it did, that means the test can still produce accurate results. Here’s how to check: