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  2. Presumptive and confirmatory tests - Wikipedia

    en.wikipedia.org/wiki/Presumptive_and...

    For example, the Kastle–Meyer test will show either that a sample is not blood or that the sample is probably blood, but may be a less common substance. Further chemical tests are needed to prove that the substance is blood. Confirmatory tests are the tests required to confirm the analysis. Confirmatory tests cost more than simpler ...

  3. Salt water chlorination - Wikipedia

    en.wikipedia.org/wiki/Salt_water_chlorination

    Salt water chlorination is a process that uses dissolved salt (1000–4000 ppm or 1–4 g/L) for the chlorination of swimming pools and hot tubs.The chlorine generator (also known as salt cell, salt generator, salt chlorinator, or SWG) uses electrolysis in the presence of dissolved salt to produce chlorine gas or its dissolved forms, hypochlorous acid and sodium hypochlorite, which are already ...

  4. Swimming pool sanitation - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_sanitation

    Algal growth may become visible, even though chlorine tests show sufficient levels. [18] Chlorine reacting with urea in urine and other nitrogen-containing wastes from bathers can produce chloramines. Chloramines typically occur when an insufficient amount of chlorine is used to disinfect a contaminated pool.

  5. Hot tub or cold plunge? Experts say there are benefits — and ...

    www.aol.com/lifestyle/hot-tub-cold-plunge...

    How a hot tub stacks up against taking a cold plunge — and what a new study says about the benefits of doing water therapy after a workout.

  6. Uniform Swimming Pool, Spa and Hot Tub Code - Wikipedia

    en.wikipedia.org/wiki/Uniform_Swimming_Pool,_Spa...

    Designated as an American National Standard, the Uniform Swimming Pool, Spa and Hot Tub Code (USPSHTC) is a model code developed by the International Association of Plumbing and Mechanical Officials to govern the installation and inspection of plumbing systems associated with swimming pools, spas and hot tubs as a means of promoting the public's health, safety and welfare.

  7. Water chlorination - Wikipedia

    en.wikipedia.org/wiki/Water_chlorination

    Checking chlorine level of the local water source in La Paz, Honduras. Water chlorination is the process of adding chlorine or chlorine compounds such as sodium hypochlorite to water . This method is used to kill bacteria, viruses and other microbes in water.

  8. Florida water temperatures top 100 degrees — reaching hot tub ...

    www.aol.com/news/hot-tub-water-temperatures-off...

    Florida water temperatures top 100 degrees — reaching hot tub levels. Kathryn Prociv. Updated July 25, ... For perspective, the average hot tub temperature is 100-102 degrees F.

  9. US homebuilder confidence at 7-month high in November, survey ...

    www.aol.com/news/us-homebuilder-confidence-7...

    (Reuters) - U.S. homebuilder sentiment rose to a seven-month high in November and expectations for sales in the next six months surged to the highest in about two-and-a-half years after a ...

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