The average size of the openings between pieces of the filter media are represented in microns. For example, a 20-micron filter has larger openings than a 5-micron filter. Consequently, the 20-micron filter element will let larger particles pass through the filter than the 5-micron media would. Bacteria range in size from 0.2 to 2 microns in width or diameter and from 1 to 10 microns in length for the nonspherical specie, so a 1-micron filter will remove most bacteria and cysts. If you are on municipal water, the water has already been treated with chlorine, chloramines and/or fluoride to remove bacteria, so chances are you do not have a bacteria problem, unless there is a problem with the water pipes between the water reclamation plant and your home. Although many customer purchase the 1-micron absolute for the kitchen because it can remove some pharmaceutical drugs, too, If you are on well water and have a bacteria problem, installing a 1-micron absolute water filter

at the point of use will remove most of the bacteria (99.9%), however, if your water has tested positive for bacteria, it is safer to install a chlorine injection water sanitizing tank to purify the water before it enters the house, followed by a whole-house filter to remove the chlorine. As a general rule, the smaller micron rating for a filter is better, especially if you are on well water, but as with most everything, thereFlow capability usually drops off as the micron rating gets smaller, especially if the water has a lot of sediment, which wellIf the filter at the end of your kitchen sink spout needs to be cleaned frequently, it's a good bet that your water has a To overcome sediment-causing flow rate problems, low micron-rating filters must have larger elements to keep from sacrificing precious flow, like a sediment prefilter to remove larger particles that clog the 1-micron filter and reduce water flow. In a well water situation, it is common

to see two or three sediment prefilters in the water flow, starting with the higher micron rating to remove the larger particulate, followed by lower micron rating filters. For example, first filter the water through a 20-micron sediment prefilter, then a 5-micron and finally throughair purifier dust free a 1-micron or a sub-micron filter. air purifier uvThis process extends the life of allair purifier help with allergies filters, including the carbon filters which do the work of removing disinfection chemicals and byproducts, heavy metals, herbicides, pesticides, THMs and other water pollutants. CuZn offers water filters for the kitchen in a 1 micron or 5 micron carbon, with options to remove chloramine, fluoride, nitrates and other specific problems

Whole House models have the 5-micron because a 1-micron whole house filter would clog up and have to be replaced too frequently. Some whole house customers choose a 1 micron prefilter, which is significantly more affordable, but is replaced once every month or two. EMI starts at 1,407.64 per month. Sold by Cloudtail (4.4 out of 5 | 534,492 ratings) and Fulfilled by Amazon. Philips AC4014 36-Watt Air Purifier (White) Item model number: AC4012/10 Date first available at Amazon.in: 22 September 2015 #5,353 in Home & Kitchen (See Top 100 in Home & Kitchen) Purifier with dedicated sleep mode. Get a better night's sleep with the Philips air purifier. Ultrafine particles, allergens, bacteria and viruses with size > 0.02 micron are effectively filtered out, while the healthy air protect alert assures you of healthy air always. With VitaShield Intelligent Purification System Get a better night's sleep with the Philips air purifier. Ultrafine particles, allergens, bacteria and viruses* with size > 0.02 micron are effectively filtered out, while the healthy air protect alert assures you of healthy air always.

The VitaShield Intelligent Purification System effectively filters out pollutants (ultrafine particles, allergens, bacteria and viruses) with size >0.02 Microns*. Smart sensor measures and controls the indoor air quality. Sleep mode cleans silently with dimmed indicators This Philips purifier operates very quietly and dimmed lights, to allow you to sleep undisturbed. 3-step fan speed lets you to adjust air flow to your liking. Healthy air protect alert Healthy air protect alert gives you a timely warning when to replace the filter. 3-step light indicators clearly show air quality level 3-step light indicators clearly show air quality level: Blue-Good; Air Purifier Model Specifications ModelAC 4025AC 4012AC 2882AC 2887AC 4014AC 4081AC 3256AC 4072AC 4372Area covered (in sq.ft)3233238518515924841022592753CADR- Clean Air Delivery rate (m3/h)147160333333279223367309341Effective filtration size (in microns)>=0.02>=0.02>=0.02>=0.02>=0.02>=0.02>=0.02>=0.02>=0.02Effective filltration efficiency (of 0.3 microns)0.99970.99970.99970.99970.99970.99970.99970.99970.9997Real -time PM 2.5 display ✓ ✓ Decidated allergen mode ✓✓ ✓ Pollution mode ✓✓ Bacteria and virus mode ✓✓ Ion Generator0% Ozone0% Ozone0% Ozone0% Ozone0% Ozone0% Ozone0% Ozone0% Ozone0% OzoneAir quality indicator ✓✓✓✓✓✓✓✓Vita Shield IPS Technology✓✓✓✓✓✓✓✓✓Light

Indicator 4 step Light4 step Light3 step Light3 step Light4 step Light4 step Light4 step LightFan speed3 step3 step3 step with turbo3 step with turbo3 step with turbo5 step with turbo5 step with turbo5 step5 stepAera sense Technology ✓ ✓ Timer (In hrs)1-8 hours1-8 hours12 hours12 hours1-8 hours1-8 hours24 hours1-8 hours1-8 hoursNo. We bought this about 15 days back for our kid who is suffering from asthmatic symptoms.First on purchasing experience - Amazon was very quick in shipment and customer service was responsive. Courier partner Bluedart was pathetic even in a big city like Bangalore. Amazon should rethink on their delivery partners.On the product:Comparison -We considered the lower model Philips AC4025 40 -Watt Air Purifier (White/Green) first but thanks to some genuine customer reviews, we realized that a pre-filter is needed and a air quality sensor will be an advantage and decided on this model. This one costed about 3000 bucks more.The experience is good during the last 15 days after purchase 2.

The pre-filter and other filters' quality are better than the lower model. Pre-filter is really needed for Indian residence conditions. 3. Easy to install, portable 4. Sleep mode is very silentCons - 1. Surprisingly, this product is not so much promoted by Philips, no reviews and question-answers in Amazon India as well 2. Could not believe the air quality sensor lights, they just turn blue after some time independent of air quality 3. The demo person from Philips knows nothing about the product and we can get more information from the internet. They are learning from us. 4. There is no clear documentation on the life of the filter and size of the room this model supports. I have been using this product for close to an year. My whole family suffers from allergic rhinitis which is sneezing and stuffy nose particularly due to pollution and high... So far it's working fine and finding it useful. I Live in Chennai. I have installed this in my father's bedroom. He is allergic to a multitude of things and I have noticed a clear difference in his health after using this.