V9071 Vicks® HEPA Air Purifier We recommend you review the third-party site’s privacy policy, as their privacy practices may differ from P&G. Any personal information you provide on the third-party’s website will be managed in accordance with their privacy policy. Please click the link below to • HEPA-type filter helps remove up to 99% of airborne particles such as dust, pollen, pet dander, mold spores, and tobacco smoke from the air that passes through the filter. • Optional on/off ionizer freshens and helps enhance cleaning performance. • Electronic filter-change reminder illuminates to remind you to change the HEPA filter. • Compact design is ideal for children's rooms, nurseries, and playrooms. • Fits almost anywhere. Can be placed on its side for nightstand use. • Soothing night-light feature • Three cleaning-power selections • 3-year limited warranty • Uses HEPA replacement filter Model 16216 To learn more about Vicks Air Purifier, call 1-800-477-0457.

Download the Vicks Air Purifier V9071 product manual (PDF).ANALYSIS:   The air contaminants may be broadly classified as either particles or gases.   HEPA filters are used to remove the particles. A blend of carbon is used to adsorb many gases/odors.  to have the proper ratio of carbon blend to air flow in order to maintain sufficient contact time between the air and carbon for high single pass efficiency through the air cleaner unit.  It is also important to have the proper blend of media to capture a broad range of molecular weight gas molecules, or, to target specific gas molecules. For background information, please refer to our ambient air cleaning sizing table, FREQUENCY OF WORK AREA AIR FILTRATIONS What is Air Changes per Hour (ACH) The simplest way to understand this concept is by example.  consider a hypothetical bar/pub which permitsIf only 3 or 4 people smoke, the air does not need to be cleaned as quickly as when the room is packed shoulder to shoulder with about

In other words, the faster smoke is created (emitted), the faster the air must be filtered.  If there is not sufficient air cleaning capacity to clean the air faster than the smoke is emitted into the air, then the airborne smoke concentrations will gradually rise rather than fall, and, the air cleaners will eventually be overtaken bySo, based on this example we deduce that there is a relationship between the rate that contaminants are emitted into the air, and the rate which the air must be filtered or cleaned.  the air is cleaned, the cleaner the air. Clean the air at a rate of 6 ACH the air at a rate of 8 ACH Clean the air at a rate of 10 ACHcontractors] Critical Emissions(hospital isolation): Clean the air at a rate of 12 ACH Since air cleaner specifications for airflow are cited with clean filters, it's best to overdesign slightly to allow for airflow reduction between filter changeouts.  As the filters backfill

with particulates, the blower and motor will incur increased air resistance causing airflow to taper off over time by up to 5-10%.  will cause a similar percentage reduction in ACH.  For instance, if 10 ACH is achieved with clean filters, then at time of filter change, the air cleaner may be providing about 9.5 or even 9.0 ACH, depending on the degree of filter degradation permitted by the user. IMPACT OF NEGATIVE PRESSURE REQUIREMENTair purifier online australia What is negative pressure?will an air purifier help with dust Negative Pressure Rooms maintain a flow of air into the room, thus keepingozone free air purifiers reviews contaminants from reaching surrounding areas. 

The exhaust air is normally filtered through a HEPA (High Efficiency Particulate Air) filter before being exhausted to the area beyond the work area.  Air which is recirculated within the room is also filtered. The exact air pressure differential which is required to be maintained is nominal only, as it merely indicates the airflowIt is sometimes stated as 0.001"wg, but this is not a pressure which is practical to measure, and therefore other criteria are given such as maintaining an inward velocity of 100 fpm (feet per minute), or exhausting 10% of the airflow, or exhausting 50 cfm more than the supply. will always be dependent on both the size and the air tightness of the subject Assume the work area is completely partitioned off from surrounding areas, except for a single doorway with estimated dimensions of 3 ft wide x 7 ft high, or, 21 sqft.  Using the typical criteria for a chemical hood that the face velocity of air into the hood should be between 75 to 125

ft/minute, and settling on a velocity of 100 ft/min, the required airflow through the doorway to achieve 100 ft/min velocity is 21 sqft x 100 ft/min = 2100 cubic feet per minute (CFM).  Using 75 ft/min, the minimum airflow needed is 21 sqft x 75 ft/min = 1575 cubic feet per minute (CFM). The more tightly the work area is sealed off from the rest of the facility, the less filtered airflow necessary to create sufficient negative pressure to contain the air contaminants to the work The target airflow should be the higher requirement which meets both the ACH needed and the necessary velocity through open area in theMeeting both requirements ensures proper filtration and creation of negative pressure for containment of airborne More information on negative pressure: see Figure 1 & Table 2 The following tables contain pricing which is current as of March 02, 2014. You may request a formal quote of a particular model with replacement filters,

for the quantity of machines desired. for Formal Quote, Freight, and Orders *This is the maximum room volume per machine to achieve a desired ACH.  Larger room volumes may require multiple machines. The machines intended for capture of gases contain substantial amounts of bulk coconut shell carbon, not simply a carbon impregnated substrate such asThe industry standard is that the contaminated air must be in contact with the carbon for at least 0.1 seconds (resident time) as the air traverses the machine from intake to exhaust.  notice a proportional relationship between the amount of airflow and the to achieve ACH of Refillable modules may be refilled in the field without purchasing and replacing Machines intended for capture of a broad range of particle sizes as well as gases contain HEPA filters and substantial carbon. Please let us know if we may be of further Cleaning Machines for Construction & Renovation