PURENOVA 2.25G Gravity-Fed Water Filter System

We recommended storing the Black Purenova Filters for four or more days if they will not be in use. Below you will find the proper method of storing the Black Purenova Filters depending on the time the filters will not be used. It is best to empty both chambers before storing because anytime water sits, it becomes stagnant. You may consider washing your chambers with soapy water before leaving them to dry. Unused and unopened Black Purenova® Elements theoretically have an indefinite shelf-life. We recommend storing them in a dry area away from anything fragrant (laundry rooms or the garage). The filters are very powerful and can absorb odors in the air. After Use Short Term: If the filters are not used between 4 and 15 days, we advise removing them from the system, placing them into a sealable sandwich bag or container, and placing the filters in the refrigerator towards the front to ensure they do not freeze. This will allow the filters to stay primarily saturated, so minimal priming is required when they are ready to be used again.
When you are ready to use the Black Purenova Filters again, re-prime until the exterior wall of the filter begins to sweat beads of water for 10 seconds. Long Term: If you have used your Black Purenova Filters, you should fully dry them before storing them. We offer a tool to assist in both priming and purging. This tool is called a Black Purenova Primer. The benefit of purging the Black Purenova® Elements is that they are dried very quickly and cleaned to a degree simultaneously. Alternatively, the filters can be dried by leaving them on a windowsill for one to three days allowing them to air-dry. The key is to ensure they are bone-dry before storing them to prevent any  growth. The filtration elements are extremely powerful and can absorb odors and smoke from the air. Once dry, we recommend sealing the elements. This can be done with a storage bag such as a sealable sandwich bag. Packing them in a storage bag will aid in preventing the filter from absorbing any odors from the air. When you are ready to use your elements, they will need to be re-primed by scrubbing them clean with a 3M Scotch-Brite (TM) pad or stiff brush. In theory, the shelf life of the elements is indefinite. **Please note that the storage methods above apply only to the Black Purenova® Elements. ** When storing the chambers of your Purenova system, it is best to empty both chambers before storing them because anytime water is still, it becomes stagnant. We recommend washing your Purenova system with soapy water before leaving it to dry.

Water filtration is a complex science, and we try to use standard terms when possible, so the explanation is more understandable. If you are interested in the science behind specific water methods used by Purenova, please follow the links contained within this page below. Several well-known methods are used to produce the Black Purenova® Elements. These methods are combined and blended to create a unique filter process the likes of which the world has never seen.

MICROFILTRATION - The first line of defense is that the Purenova® Elements are composed of a formulation of more than six different media types, all constructed into a very compact matrix containing millions of microscopic pores. These paths are so small that these pollutants physically cannot pass through them and become trapped, eliminating them from your drinking water; this is known as microfiltration.

ADSORPTION - Secondly, our media formulation uses unique adsorption and absorption properties. Adsorption works to create an ionic barrier similar to surface tension. This barrier is ideally suited to the microporous water filter because it effectively allows the tiny pores to block smaller water contaminants than the pore size itself. Next, the heavy metals ions (mineral molecules) are extracted from the water through an Ion exchange process where they are attracted to and transformed by electrically bonding to the media. Finally, water molecules can take several minutes to pass through the filter elements because of their gravity flow nature. In contrast, these water molecules passing through other filtration systems pass through in only fractions of a second. This longer contact time between the water molecules and the filter media provides much greater removal rates of harmful water contaminants not obtainable through conventional pressurized water filtration methods.

FLOW RATE - Finally, Purenova systems effectively addresses contaminants from water because of the extremely long “contact period.” Other filtration systems rely on water pressure that forces water molecules through the elements at 60-90 PSI. These water molecules come into contact with the filter media for a mere fraction of a second. By comparison, water molecules passing through the structure of the Black Purenova elements are drawn gently by gravity and stay in contact with the media for an extended period. This allows the filter media to be more efficient in capturing contaminants. This advanced technology was developed, refined, and proven through years of diligent, investigative research and testing performed by water filtration specialists, researchers, and engineers. The flow rate or time of exposure through the Black Purenova® Elements has been calculated to yield the most significant volume of addressing all contaminants. 

As you can see, the Purenova systems incorporates several different scientific methods to produce unmatched drinking water quality. We can do all of this and still maintain simplicity. As a Purenova user, all that you must do is pour water into the unit. The processes mentioned above will continue to work for you behind the scenes for many years to come. This long filter life allows you to produce filtered drinking water for pennies a gallon.

Yes, using the black Purenova filters will remove Chromium 6 from the water at levels greater than 99.8%.

Yes it is normal and not unusual for the last 1/2" to 1" of water to remain in the upper chamber. By design the water must pass through very fine micro pores within the elements in order to pass from the upper chamber to the lower. The lower the water level in the upper chamber, the lower the pressure available to force the water through the micro pores. You might have noticed that the system purifies much faster when full than when half full. That is because there is more pressure. The only way to remedy the problem would be to enlarge the pores within the filter elements. That would of course, reduce the efficiency of the purification elements. During each cycle the water left from the previous cycle mixes with the water from the current cycle and is then purified. You should not be concerned about the excess water during normal use however if you discontinue using your filter for a period of time such as during a vacation, it would not hurt to empty the upper chamber before departing.

With respect to the micron rating, we do not use or publish a micron rating for the Black Purenova elements for the following reasons.

There is much confusion with respect to nominal and absolute micron ratings. An absolute micron rating is one that states the maximum pore size expected within an element. The nominal micron rating is the average pore size within the element. This means that if 90% of the pores are .02 microns and ten percent are 2 microns, one could claim the nominal micron rating as .2 microns, which would imply that pathogenic bacteria and parasites would be totally removed. But in reality the bulk of the water would channel through the larger 2-micron pores and thereby allow both bacteria and parasites to pass through. Therefore a nominal micron-rating claim can be very misleading.

With respect to the absolute micron rating, there is also confusion because there are two different standards to determine absolute; in the US the standard is 99.9% removal, but the international standard in 99.99% removal or 10 times greater removal.

Clever marketers of products can use the confusion over the above differences to make product "A" appear to be better than product "B" when product B may be far superior in reality. For example, we used to report an absolute rating using the international standard because we have a large international customer base. Several years ago we published a rating on our ceramic filters. A particular company began to publish that our elements were .9 microns whereas theirs were .2 microns. However, our micron rating was based on absolute (international) while theirs was based on a nominal(US)rating. When tested at Spectrum Labs, it was found that at the .2 to .3 microns range our filter removed more particulate than the other brand. Unfortunately many people make there purchasing decisions based on a micron rating that can be legitimately distorted and to a significant degree.

The Black Purenova elements are so powerful, they are unique in their ability to mechanically remove food coloring from water.

• Wash lower chamber once per month with soapy dishwater.
• In areas with hard water, calcium scale may build up on spigot and chambers after prolonged use. To remove, soak affected part(s) in vinegar or a 50-50% mix of vinegar and water for about 15 minutes. Wipe away calcium scale with a ScotchBrite pad or soft brush then wash with soapy dishwater and rinse.

No, the system will leave in beneficial minerals such as calcium, magnesium, and potassium.