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2. The best electric razor - Engadget

   www.engadget.com/2019-07-28-the-best-electric...

   Replacement cartridges last about three months and cost about $25 for a four-pack. Replacement foils are considerably more expensive for the Series 9 ; they currently run about $50, compared with ...

3. Portable water purification - Wikipedia

   en.wikipedia.org/wiki/Portable_water_purification

   Portable water purification unit used by International Red Cross and Red Crescent. Portable water purification devices are self-contained, easily transported units used to purify water from untreated sources (such as rivers, lakes, and wells) for drinking purposes. Their main function is to eliminate pathogens, and often also of suspended ...

4. Water filter - Wikipedia

   en.wikipedia.org/wiki/Water_filter

   A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural irrigation, accessible drinking water, public and private aquariums, and the safe use of ponds and swimming pools .

5. Backwashing (water treatment) - Wikipedia

   en.wikipedia.org/wiki/Backwashing_(water_treatment)

   Backwashing is a form of preventive maintenance so that the filter media can be reused. In water treatment plants, backwashing can be an automated process that is run by local programmable logic controllers (PLCs). The backwash cycle is triggered after a set time interval, when the filter effluent turbidity is greater than a treatment guideline ...

6. What's the healthiest beverage? The No. 1 pick, according to ...

   www.aol.com/news/whats-healthiest-beverage-no-1...

   Water is definitely the healthiest drink, Rizzo says. “The body is made up of 60% water, and we need to drink water to live. Water plays a role in basically every single process in the body. You ...

7. Mila hands-on: Much smarter (and pricier) than your average ...

   www.engadget.com/mila-smart-air-purifier-hands...

   Aside from those issues, the Mila offers great value above and beyond a normal air purifier. Yes, it costs around $100 more than my existing (and not very smart) Coway AP-1512HH Mighty (which I do ...