Filtration is a mechanical or physical operation which is used for the separation of solids from gases (Air) by interposing a medium (Filter) through which only the air can pass. in the air are retained in the filter media, (depending on the pore size and Diagram of simple filtration: oversize particles in the FEED (Dirty Air) cannot pass through the lattice structure of the filter, while air and small particles pass If you can imagine in time, the more oversized particles that get stuck in the filter the harder it is for air to pass through and even the smaller particles will get caught up in the filter giving you less volume of FILTRATE but cleaner air with less particles. Note:  If it requires 10 lbs of pressure per square inch to keep the FEED flowing through the filter when it is clean, it will take more pressure to maintain that same flow amount after the filter has begun collecting the large particles and clogging up the

pores of the filter.  How much more pressure will depend on the amount of oversize particles retained by the filter. Looking back to the diagram, if the darker yellow area around the outside of the filter does not make a good seal with the filter andair purifier tv commercial air is allowed to bypass around the filter, the filtration efficiency iscanon eos lens cleaning kit compromised and the quality of FILTRATE is lowered sometimes the same as the FEED.  furnace blower shop air cleanerThis effect takes place more as the filter becomes clogged with particles creating greater resistance. This filter to be labeled in the USA as a HEPA filter, must meet HEPA Filtration Standards of filtration. 

This standard is 99.97% efficient to .3This in simple terms means it must remove 99.97% of all particles the size of .3 microns or smaller. Today, a HEPA filter rating is applicable to any highly efficient air filter that can attain the same filter efficiency performance standards as a minimum and is equivalent to the more rating for respirator filters. The United States Department of Energy (DOE) has specific requirements for HEPA filters in DOE regulated applications. Products that claim to be "HEPA-type", "HEPA-like", or "99% HEPA" do not satisfy these requirements and may not have been tested in independent laboratories. SPA101 Ultrasonic Aromatherapy Essential Oil Diffuser by PureGuardian® Spa The PureGuardian® Aromatherapy Essential Oil Diffuser uses ultrasonic technology.  Just add a few drops of essential oils to the water and the ultrafine mist will quickly and continuously fill the room with the natural oil aroma. The diffuser is quiet and won't disturb you when you're sleeping. 

Its fun design will add a pop of color to any room and the color changing night-light can be turned on or off.  It's lightweight and compact, making it great to put on small nightstands.  The 100ml water reservoir is BPA free and treated with Silver Clean™ Protection, which fights the growth of mold on the surface of the tank.  5-6 hours of continuous operation Limited outlet energy required to run unit No mess and no filter required Easy to set up, operate and clean On/Off power and light control Automatic shut-off when empty Enjoy a continuous color-changing light Mold and Mildew Resistant: SilverClean Technology™ fights the growth of mold and mildew on the surface of the water reservoir The use of natural oils provides the senses with a pleasant aroma such as Eucalyptus, Peppermint or Lavender to welcome calming and relaxation Light-weight and compact, making it easy to travel with Ideal for a home, teen bedroom, dorm room, office, or hotel room

*This product is not intended to diagnose, treat, cure or prevent any disease. Dimensions: 4.37 x 4.43 x 7.88 Input Voltage: 110-240V AC, 50/60Hz Bulb Wattage 24V DC, 12W Run Time: 5 - 6 Hours Continuous Manual: SPA101 PDF Manual Select a firm, level, flat location - at least 6 inches (15 cm) from any wall or object for proper air flow. Place the diffuser on a water-resistant surface, as water can damage furniture and some flooring. Do not place directly on carpet, towels, blankets or other absorbant surfaces. Keep the unit away from any electonics sensitive to water. Make sure unit is unplugged. Separate the top cover from the main body of the unit. Using standard tap water, use the measuring cup to fill the water into the water tank. DO NOT fill the water beyond the MAX level mark of measuring cup. Diffuser will not work if filled beyond the MAX level. Important: Do NOT attempt to fill water into the diffuser without removing the top cover.

Add approximately 3 -5 drops of essential oil. Important: Avoid adding too many drops of oil. Return the top cover. Connect the power adapter to the unit. Plug into electrical outlet. Press the power button to turn the diffuser on. The unit operates using Ultrasonic Technology: A metal disc within the unit vibrates at high speed The high-frequency vibrations turn water into a micro-fine mist The micro-fine, scented mist is then blown into the air. How Do I Clean the Unit After Each Use? Turn the device OFF and unplug the unit from the electrical outlet. Lift off the top cover and the inner water tank cover. Drain and rinse the water tank thoroughly to remove any sediment and dirt. Wipe clean and dry with a clean soft cloth or paper towel. Remove water and clean the water tank after each use. IMPORTANT: Do NOT fill with HOT water as this may cause leaking. Remove the water from the tank when the diffuser is not in use. Are there any filters that need cleaned or replaced?