Filter Active
 |
 HONEYWELL Replacement Pre filter 2 Activated Carbon Pre filters NO 33002 NIB $5.00 Time Remaining: 29d 13h 50m Buy It Now for only: $5.00 |
 Hunter replacement activated carbon pre filter $18.99 Time Remaining: 2d 11h 32m |
 NanoCeram activated carbon block water filter 20 x 45 02mic PACB45 20 NIB $50.00 Time Remaining: 19d 2h 59m Buy It Now for only: $50.00 |
 Home Activated Carbon Water Tap Filter Faucet Purifier $3.25 Time Remaining: 20d 17h 30m Buy It Now for only: $3.25 |
 Sharp FZ C100DFU Replacement Active Carbon Filter For Kc 850u $47.05 Time Remaining: 2d 10h 24m Buy It Now for only: $47.05 |
 Hydroponic Canister Filter Activated Carbon Charcoal Refill Coconut Carbon 10 $28.90 Time Remaining: 5d 4h 28m Buy It Now for only: $28.90 |
 Hunter Replacement Activated Carbon Pre Filter HEPA 2 Pack QuietFLO Free Shippin $19.99 Time Remaining: 18d 21h 55m Buy It Now for only: $19.99 |
 Hydro Cure 10 Granular Activated Carbon Filter PC36599 $14.88 Time Remaining: 14d 21h 51m Buy It Now for only: $14.88 |
 GENUINE HONEYWELL ENVIRACAIRE UNIVERSAL REPLACEMENT PRE FILTER ACTIVATED CARBON $5.99 Time Remaining: 21d 1m Buy It Now for only: $5.99 |
 4 Pack Whirlpool Replacement Activated Carbon Pre Filter Small PN 8171434 $27.75 Time Remaining: 10d 15h 43m Buy It Now for only: $27.75 |
 Rabbit Air BioGS Charcoal based Activated Carbon Filter $29.95 Time Remaining: 18d 8h 44m Buy It Now for only: $29.95 |
 NEW HUNTER REPLACEMENT ACTIVATED CARBON PRE FILTER FOR QUIETFLO HEPA $5.99 Time Remaining: 16d 11h 51m Buy It Now for only: $5.99 |
 Two In Line Shower Filter Granular Activated Carbon $21.99 Time Remaining: 13d 2h 33m Buy It Now for only: $21.99 |
 SEARS KENMORE CARBON ACTIVATED PREFILTER PRE FILTER $12.99 Time Remaining: 11d 12h 44m Buy It Now for only: $12.99 |
 Water Dispenser Activated Inline Granular Carbon Filter $14.01 Time Remaining: 29d 1h 28m Buy It Now for only: $14.01 |
 Airsopure S900 HEPA Air Purifier Active Carbon PCO Negative Ion Pre filter $59.99 Time Remaining: 11d 4h 21m Buy It Now for only: $59.99 |
 Genuine Honeywell Carbon Activated Pre Filter Model 38002 NIB $17.99 Time Remaining: 27d 5h 55m Buy It Now for only: $17.99 |
 UNIVERSAL REPLACEMENT ACTIVATED CARBON PRE FILTER 31 X 16 $5.95 Time Remaining: 4d 14h 45m Buy It Now for only: $5.95 |
 BIONAIRE 515 CARBON ACTIVATED PREFILTER PRE FILTER $6.95 Time Remaining: 11d 12h 13m Buy It Now for only: $6.95 |
 Lot 3 Crane Air Purifier Filter Set Works With EE 7772 HEPA Type Active Carbon $7.99 Time Remaining: 9d 9h 46m Buy It Now for only: $7.99 |
 holmes hapf 91 Activated Carbon Odor Filters $14.99 Time Remaining: 3d 5h 36m Buy It Now for only: $14.99 |
 CBC 10 Water Filter NIP Extruded Activated Carbon Block NEW $9.95 Time Remaining: 3d 7h 33m |
 Water Dispenser Activated Granular Carbon Core Filter $21.01 Time Remaining: 25d 19h 38m Buy It Now for only: $21.01 |
 In Line Shower Filter 2 Granular Activated Carbons $27.99 Time Remaining: 18d 39m Buy It Now for only: $27.99 |
 10 Long Granular Activated Block Carbon Cartridge for Water Filter $12.30 Time Remaining: 4d 18h 56m Buy It Now for only: $12.30 |
 BIONAIRE A1000C CARBON ACTIVATED PREFILTER PRE FILTER $7.85 Time Remaining: 11d 12h 8m Buy It Now for only: $7.85 |
 BIONAIRE A1002C CARBON ACTIVATED PREFILTER PRE FILTER $7.59 Time Remaining: 11d 12h 7m Buy It Now for only: $7.59 |
 White In Line Shower Filter Granular Activated Carbon $16.49 Time Remaining: 13d 2h 29m Buy It Now for only: $16.49 |
 BIONAIRE A1260C CARBON ACTIVATED PREFILTER PRE FILTER $5.95 Time Remaining: 11d 12h 34m Buy It Now for only: $5.95 |
 In Line Shower Filter w Two Full Granular Activated Carbon Filters $31.25 Time Remaining: 23d 6h 9m Buy It Now for only: $31.25 |
 BIONAIRE A0702C CARBON ACTIVATED PREFILTER PRE FILTER $7.25 Time Remaining: 11d 12h 11m Buy It Now for only: $7.25 |
 Honeywell AIR PURIFIER ACTIVATED CARBON PREFILTER 38002 pre filter round HEPA $17.50 Time Remaining: 22d 9h 11m Buy It Now for only: $17.50 |
 Activated Carbon Filter Cartridge for Water Dispenser $12.52 Time Remaining: 10d 14h 49m Buy It Now for only: $12.52 |
 New In Line Shower Filter with Two Full Granular Activated Carbon Filters $19.95 Time Remaining: 12d 6h 27m Buy It Now for only: $19.95 |
 SUNBEAM CARBON ACTIVATED PREFILTER PRE FILTER $12.99 Time Remaining: 11d 12h Buy It Now for only: $12.99 |
 BIONAIRE 115 CARBON ACTIVATED PREFILTER PRE FILTER $7.49 Time Remaining: 21d 2h 46m Buy It Now for only: $7.49 |
 Crane Air Purifier Filter Set Works With EE 7772 HEPA Type and Active Carbon $4.25 Time Remaining: 3d 11h 25m Buy It Now for only: $4.25 |
 Ez Flo 60670 Activated Carbon Filter $5.79 Time Remaining: 21d 3h 27m Buy It Now for only: $5.79 |
 6 X 18 ACTIVATED CARBON AIR FILTER ODOR SCRUBBER $89.95 Time Remaining: 29d 12h 36m Buy It Now for only: $89.95 |
 Water Dispenser Activated Granular Carbon Core Filter $16.42 Time Remaining: 26d 4h 47m Buy It Now for only: $16.42 |
 BIONAIRE 715 CARBON ACTIVATED PREFILTER PRE FILTER $6.89 Time Remaining: 21d 2h 45m Buy It Now for only: $6.89 |
 20 X 5 granulated activated carbon GAC filter $25.00 Time Remaining: 6d 9h 42m |
 Activated Carbon Filters Odor Water Air Aquarium Garden $5.00 Time Remaining: 17d 3h 47m Buy It Now for only: $5.00 |
 HOLMES CARBON ACTIVATED PREFILTER PRE FILTER $12.99 Time Remaining: 21d 2h 42m Buy It Now for only: $12.99 |
 10 Long Granular Activated Block Carbon Cartridge for Water Filter $11.85 Time Remaining: 3d 14h 47m Buy It Now for only: $11.85 |
 2 Activated Carbon Odor Replacement HAPF 91 HOLMES Air Purifier Filters $14.99 Time Remaining: 4d 3h 29m Buy It Now for only: $14.99 |
 Ozonator Hepa Active Carbn FilterUVC Lamp Air Purifier $94.99 Time Remaining: 5d 18h 7m Buy It Now for only: $94.99 |
 BIONAIRE A1562C CARBON ACTIVATED PREFILTER PRE FILTER $8.29 Time Remaining: 11d 12h 5m Buy It Now for only: $8.29 |
 BIONAIRE A1402C CARBON ACTIVATED PREFILTER PRE FILTER $7.99 Time Remaining: 11d 12h 6m Buy It Now for only: $7.99 |
 BIONAIRE A0862C CARBON ACTIVATED PREFILTER PRE FILTER $7.59 Time Remaining: 11d 12h 9m Buy It Now for only: $7.59 |
 BIONAIRE A0802C CARBON ACTIVATED PREFILTER PRE FILTER $7.59 Time Remaining: 11d 12h 10m Buy It Now for only: $7.59 |
 BOSTON CARBON ACTIVATED PREFILTER PRE FILTER $12.99 Time Remaining: 11d 12h 3m Buy It Now for only: $12.99 |
 DURACRAFT CARBON ACTIVATED PREFILTER PRE FILTER $12.99 Time Remaining: 21d 2h 43m Buy It Now for only: $12.99 |
 10 Long Granular Activated Block Carbon Cartridge for Water Filter $12.54 Time Remaining: 6d 8h 47m Buy It Now for only: $12.54 |
 Dual Hepa FilterActive Carbon Filter Ve Ion Genrator $98.99 Time Remaining: 17d 19h 7m Buy It Now for only: $98.99 |
 Pentek GAC Granular Activated Carbon Cartridge Filter 155153 43 $14.95 Time Remaining: 9d 7h 38m Buy It Now for only: $14.95 |
 4 X 12 ACTIVATED CARBON FILTER HYDROPONIC ODOR SCRUBBER $54.95 Time Remaining: 7d 12h 23m Buy It Now for only: $54.95 |
 Activated Carbon Filter Cartridge Water Purifier Green Clear for Water Dispenser $6.47 Time Remaining: 19d 3h 43m Buy It Now for only: $6.47 |
 Activated Alumina Fluoride removal Water Filter Big Blue whole house high flow $379.00 Time Remaining: 8d 8h 11m Buy It Now for only: $379.00 |
 Ez Flo 60669 Activated Carbon Aluminum Filter $4.27 Time Remaining: 20d 3h 16m Buy It Now for only: $4.27 |
 BEMIS CARBON ACTIVATED PREFILTER PRE FILTER $12.99 Time Remaining: 11d 12h 14m Buy It Now for only: $12.99 |
 activated charcoal filter most oreck air high quality $5.00 Time Remaining: 1d 7h 26m |
 BIONAIRE A2562C CARBON ACTIVATED PREFILTER PRE FILTER $9.49 Time Remaining: 11d 12h 4m Buy It Now for only: $9.49 |
 96 Granular Activated Carbon Water Filter Cartridge $20.80 Time Remaining: 15d 11h 29m Buy It Now for only: $20.80 |
 Activated charged charcoal filters for Goodman GMU GSAS $29.00 Time Remaining: 20d 23h 36m Buy It Now for only: $29.00 |
 Ozonator Hepa Active Carbn Filter UVC Lamp Air Purifier Remote Cntrl D $98.99 Time Remaining: 28d 18h 7m Buy It Now for only: $98.99 |
 10 Long Granular Activated Block Carbon Cartridge for Water Filter $12.32 Time Remaining: 9d 1h 30m Buy It Now for only: $12.32 |
 Activated Carbon Filter Cartridge Water Purifier Green Clear for Water Dispenser $6.11 Time Remaining: 21d 13h 24m Buy It Now for only: $6.11 |
 Whole House 9x48 Activated Carbon Whole House Filter Fleck 5600 Valve $375.00 Time Remaining: 4d 9h 5m Buy It Now for only: $375.00 |
 CALOR CARBON ACTIVATED PREFILTER PRE FILTER $12.99 Time Remaining: 11d 12h 2m Buy It Now for only: $12.99 |
 BIONAIRE A0702C CARBON ACTIVATED PRE FILTER HEPA 4 PACK $5.39 Time Remaining: 7d 5h 12m Buy It Now for only: $5.39 |
 DELONGHI CARBON ACTIVATED PREFILTER PRE FILTER $12.99 Time Remaining: 21d 2h 44m Buy It Now for only: $12.99 |
 PURE 91500 N Activated Carbon Block 25 x 20 Water Filter 10 micron NIP $11.99 Time Remaining: 5d 16h 55m Buy It Now for only: $11.99 |
 Universal Pre Filter for Honeywell 38002 10 PreFilters Active Carbon PreFilter $84.95 Time Remaining: 5d 9h Buy It Now for only: $84.95 |
 10 Long Granular Activated Block Carbon Cartridge for Water Filter $12.30 Time Remaining: 7d 56m Buy It Now for only: $12.30 |
 Honeywell 38002 activated carbon filter 2 lot new $18.95 Time Remaining: 20d 9h 19m Buy It Now for only: $18.95 |
 In Line Shower Filter W Two Full Granular Activated Carbon Filters White Box $27.99 Time Remaining: 6d 15h 55m Buy It Now for only: $27.99 |
 Maxam Post activated Carbon Filter For The Kt5000 $42.52 Time Remaining: 11d 51m Buy It Now for only: $42.52 |
 10 Long Granular Activated Block Carbon Cartridge for Water Filter $12.56 Time Remaining: 6d 18h 14m Buy It Now for only: $12.56 |
 Water Dispenser Activated Inline Granular Carbon Filter $11.25 Time Remaining: 6d 18h 58m Buy It Now for only: $11.25 |
 Activated Carbon Filter Cartridge Water Purifier Green Clear for Water Dispenser $6.13 Time Remaining: 17d 18h 42m Buy It Now for only: $6.13 |
 activated charcoal filter most oreck air high quality $5.00 Time Remaining: 2d 7h 20m Buy It Now for only: $7.00 |
 Activated Carbon Filter Cartridge for Water Dispenser $12.52 Time Remaining: 7d 2h 17m Buy It Now for only: $12.52 |
 10 Long Granular Activated Block Carbon Cartridge for Water Filter $12.59 Time Remaining: 3d 6h 46m Buy It Now for only: $12.59 |
 96 Granular Activated Carbon Water Filter Cartridge $16.29 Time Remaining: 13d 18h 33m Buy It Now for only: $16.29 |
 Activated Carbon Filter Cartridge for Water Dispenser $12.54 Time Remaining: 8d 9h 30m Buy It Now for only: $12.54 |
 Activated Carbon Filter Cartridge for Water Dispenser $19.47 Time Remaining: 21d 27m Buy It Now for only: $19.47 |
 NEW REPLACEMENT FILTER w ACTIVATED CARBON BACKING FOR SPT AC3000i AIR CLEANER $36.95 Time Remaining: 6d 14h 15m Buy It Now for only: $36.95 |
 AIR HANDLER 6B861 HONEYCOMB FILTER ACTIVATED CARBON 146410 $9.00 Time Remaining: 29d 23h 5m Buy It Now for only: $9.00 |
 2 BB 45 X 20 WATER FILTER CARTRIDGE SEDIMENT GAC GRANULAR ACTIVATED CARBON $44.00 Time Remaining: 27d 5h 58m Buy It Now for only: $44.00 |
 96 Granular Activated Carbon Water Filter Cartridge $20.76 Time Remaining: 12d 5h 43m Buy It Now for only: $20.76 |
 Ez Flo 60673 Activated Carbon Filter $5.79 Time Remaining: 20d 4h 14m Buy It Now for only: $5.79 |
 Honeywell Universal Activated Carbon Pre Filter $14.42 Time Remaining: 2d 11h 52m Buy It Now for only: $14.42 |
 NEW Star Deluxe Undersink Granular Activated Carbon Filter $59.88 Time Remaining: 14d 9h 51m Buy It Now for only: $59.88 |
 Honeywell Universal Activated Carbon Pre filter Filte $49.99 Time Remaining: 1d 12h 49m Buy It Now for only: $49.99 |
 holmes activated carbon filter HAP 92 one1 filter $16.00 Time Remaining: 2d 40m Buy It Now for only: $16.00 |
 Sunpentown 2102 CBN Activated Carbon Filter for AC 2102 Air Cleaner NEW $45.97 Time Remaining: 21d 13h 41m Buy It Now for only: $45.97 |
 6 Activated carbon block cartridges 45x 20 water filter $130.00 Time Remaining: 17d 1h 36m Buy It Now for only: $130.00 |
 Caware Granular Activated Carbon Cartridge Filter $31.50 Time Remaining: 14d 7h 36m Buy It Now for only: $31.50 |
 Activated Carbon Filter Cartridge for Water Dispenser $19.16 Time Remaining: 16d 21h 58m Buy It Now for only: $19.16 |
Filter Active
Effective Drinking Water Filters Work Because of Activated Carbon
What is Activated Carbon and how does it work in a drinking water filter? What is the difference between the types of carbon filters? These are questions that you should have a basic understanding of when evaluating the purchase choices for drinking water filters.
Activated carbon, is carbon that has been processed to make it extremely porous. It is activated by passing oxidizing gases through the material at extremely high temperatures, producing micro pores.
The creation of these micro pores, gives the material a huge surface area. A small positive charge is also added to the carbon. The material now has its two main mechanisms for the removal of contaminants: adsorption and catalytic reduction.
Volatile organic chemicals (VOCs), herbicides, pesticides, and other man made compounds are removed by adsorption. Residual disinfectants like chlorine and trihalomethane are removed by catalytic reduction. The contaminants are chemically bound to the carbon.
Activated carbon surface properties are hydrophobic, meaning that they repel water, and oleophilic, meaning that organic or oily substances are adsorbed. With the right flow conditions, dissolved chemicals in water flowing over the carbon surface “stick” to the carbon in a thin film while the water passes on.
One pound of carbon has the surface area of 125 acres. The most common carbon types used in drinking water filters are bituminous, wood, and nut shell carbons (like coconut). The carbon can adsorb thousands of different chemicals. It is one of the most absorbent materials known and is used in many forms and applications.
The nut shell carbons cost more to produce, but are more effective at contaminant removal. How well the contaminants are removed by the drinking water filter depends on the carbon type, how long the water is in contact with the material and the size of the pores.
In drinking water filters, there are two main forms of activated carbon used: powdered block filters and granular filters. Generally, carbon block filters are more effective.
Granular filters can be effective in some applications but the media can channel. Channeling is water passing through on the least resistant path, avoiding contact time with the carbon, thus lowering the effectiveness. These filters cannot be measured in micron pore size due to their granular state. Instead they are rated by mesh size. In point of use drinking water filters a small mesh size is used with another cloth like "filter" to prevent granules escaping.
Carbon block filters are made of single or various blends of carbons, combined with plastic polymers. These are industrial grade filters. They are made in various sizes and micron ratings, depending on the need of the application. They are rated by the size of the particles they are able to remove, measured in microns, and generally range from 50 microns (least effective) down to 0.5 microns (most effective). Because they are physically strong, they do not channel.
For a point of use drinking water filter, the block form of activated carbon is probably best. To find out more visit my website.
About the Author
Renee Smallwood has been a health care professional for more than 30 years. To learn more about what you can do to ensure you are getting the best water to maintain a healthy lifestyle, visit her blog at http://waterqualitysolutions.blogspot.com/
Count rows in excel when filter is active?
A1 = A B1 = Red
A2 = B B2 = Blue
A3 = A B3 = Red
A4 = C B4 = Green
A5 = B B5 = Blue
Now in another excel sheet, I am trying to count Column B while using a filter on Column A.
Just not able to get it to work. I would appreciate any working solution.
Thanks!
The key function is
SUBTOTAL
Use it like this
=SUBTOTAL(3, A:A)
This is a special function that works with Filter, the number 3 tells SUBTOTAL to ack like COUNTA function.
you can see Excel help to get other functions
Enjoy it, it worth it
Yes, I know, I am the VBAXLMan here
RYPOS Active Diesel Particulate Filter