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2. Ultraviolet germicidal irradiation - Wikipedia

   en.wikipedia.org/wiki/Ultraviolet_germicidal...

   A portable, battery-powered, low-pressure mercury-vapour discharge lamp for water sterilization Cutaway model of UV disinfection unit used in water treatment plants. Ultraviolet disinfection of water is a purely physical, chemical-free process.

3. NEWater - Wikipedia

   en.wikipedia.org/wiki/NEWater

   A semi-permeable membrane filters out contaminants such as bacteria, viruses, heavy metals, nitrates, chlorides, sulfates, disinfection by-products, aromatic hydrocarbons, and pesticides. NEWater is thus free from viruses and bacteria and contains very low levels of salts and organic matter. At this stage, the water is of potable quality.

4. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Portable water purification devices and methods are available for disinfection and treatment in emergencies or in remote locations. Disinfection is the primary goal, since aesthetic considerations such as taste, odour, appearance, and trace chemical contamination do not affect the short-term safety of drinking water.

5. All of these Black Friday deals would make very good gifts - AOL

   www.aol.com/lifestyle/all-of-these-black-friday...

   Save $110 with Prime This two-part set includes a cordless drill and a cordless impact driver, each with their own battery. The set also comes with a battery charger and a carrying case.

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. These are the 20 best Cyber Monday deals under $100 at Walmart

   www.aol.com/lifestyle/these-are-the-best-cyber...

   We've collected our favorite Walmart deals under $100 this Cyber Monday. Save on tablets, headphones, clothing, and more.

8. 15 Black Friday deals that are worth the splurge: Le Creuset ...

   www.aol.com/lifestyle/11-black-friday-deals-that...

   The Cocoon by Sealy is an excellent cooling mattress ideal for sleepers who run hot or live in warmer climates. The Cocoon Chill usually costs over $1,000, but during Black Friday, it's down to ...

9. UV filter - Wikipedia

   en.wikipedia.org/wiki/UV_filter

   UV filters were used to filter out shorter ultraviolet wavelengths while remaining transparent to visible light. However, the modern-day photographic film and digital cameras are less sensitive to UV wavelengths. UV filters are sometimes referred to as L37 or L39 filters, depending on the wavelengths of light they filter out.