[PConline evaluation] Before the beginning of the text, I wanted to tell a little story. It was about 2003. The author did not use tap water as edible water because the largest paper mill in his hometown discharged the sewage every day. The mother river of the old home, although the river water will be treated by the water plant, but the father had seen a psychological shadow after a sewage treatment process, since then more than 10 years a week to go to the mountains to take spring water as the family's daily water.
In fact, drinking water has become a major problem that has plagued our lives. We must know that the degree of harm caused by water pollution is said to affect people's health for up to 10 years!
The water purifier technology of the year was not yet complete, the structure was simple, the function was not significant, the price of high technology was expensive, and as time went by, more and more advanced technology features more advanced and cheaper water purifiers entered the public view. . The PConline home appliance evaluation room recently received the AQ-4000 household kitchen water purifier AQ-4000 that was tested by quasana Axana, and it creatively adopted the "1+2" ​​filtering mode, which is a pre-filter, with a two-stage filter 66 Pollutants to avoid respiratory, cardiovascular, neurological, and urinary system diseases caused by drinking contaminated water. At the same time, it retains calcium, magnesium, potassium and other beneficial minerals, balances the pH of water, and improves the taste. How is the experience? Take a look together.
Aquasana Aksana may be unfamiliar to everyone. It is one of the most professional domestic water purifier manufacturers and well-known brands. At the same time, Professor Strand, the founder, has been an expert in water filtration industry and has 17 US patents so far. Two monographs have been published. In 2015, Hong Kong's “lead exceeded lead†incident, Aquasana (Aksana) became the Hong Kong government recognized brand, 20,000 Hong Kong households to use Aksana water purifiers to solve the problem of lead removal, covering 70% of affected households.
The aquasana AQ-4000 ASF-4000 has been certified by the NSF to remove 66 pollutants, including lead, asbestos, suspended particles, chlorine and chloramines, mercury, active cysts and flagellates, and volatile organic compounds. More than %, while retaining calcium, magnesium, potassium and other beneficial minerals.
NSF is the abbreviation of "National Health Foundation of the United States". The water quality safety testing and certification standard formulated by NSF is called the industry's highest standard, and it is adopted by the United States, European Union countries, Australia and other countries as national standards. Therefore, NSF is the World Health Organization ( Who) was designated as the global cooperation center for drinking water safety and filtration.
Aquasana AQ-4000 is a kitchen-style water purifier that looks very small and does not take up space. It can be easily changed to use as needed. And no plug-in, no waste water, filtration is a "1 + 2" smart filter mode, Claryum intelligent filter remove all kinds of pollution, selective retention of beneficial minerals to the human body. Using the technique of Claryum, the filter material is pressed into tiny holes with a large surface area that can absorb a large amount of pollutants and effectively filter 66 kinds of pollutants. The water purification effect exceeds or is equivalent to the requirements specified in NSF Standard 42 (Dechlorination Effect), 53 (Drinking Water Standard) and 401 (Deletion of Pharmaceutical Composition). Because NSF's testing standards are extremely harsh, there are few water purification devices on the market that can pass NSF-certified brands and have passed three standard certifications.
Appearance quasana Aqsana AQ-4000 uses a minimalist design, the body uses beige engineering plastic to create, only the front with a brand LOGO, simple but also has a good texture.
The bottom is the switch of two stage filter elements. The filter element is divided into two types, A/B, which can only be put into the corresponding filter element groove, and cannot be used in reverse. The filter module of Filter A is mainly composed of a composite activated carbon block (activated carbon and catalytic carbon). Activated carbon can filter organic compounds, remove odors, and enhance the taste; catalytic carbon can strengthen the role of activated carbon, and effectively filter chlorine and chloramine.
Filter B uses fine sub-micron mechanical filtration, 0.5 micron pore structure, can filter asbestos, Cryptosporidium and other microorganisms.
The quasana AQ-4000 AQ-4000's two-stage filter cartridge, using composite activated carbon, filters harmful chemicals (such as herbicides, pesticides, volatile compounds, methyl tert-butyl ether, by-products, and other industrial chemicals). The use of ion exchange technology, through the exchange of redox reactions and pollutants in the electronic exchange of pollutants into non-hazardous substances, reducing heavy metals, such as lead, and mercury. In addition, it filters through asbestos and chlorine-resistant cysts such as Cryptosporidium and Flagella by fine sub-micron mechanical filtration (submicron pore size of only 0.5 μm, which greatly increases the effective filtration area of ​​the filter element surface).
The installation process is very simple, no drilling or modification of the water pipe, no extra installation tools, just install the diverter valve outlet (can be compatible with most of the market faucets, or can use the included metal faucet adapter Note that the device is not suitable for pull-out faucets. Put the hose into the water purifier (the color needs to be matched well). Open the diverter valve for 10 minutes. After flushing the filter element, you can use it.
Tap valve and hose assembly.
20-micron pp cotton filters dust, impurities and rust in the water, prolongs the service life of the two-stage filter, and allows it to work more efficiently.
From the publicity point of view, this product is very powerful, both WQA certified and NSF certified, then the actual use of the effect? The author immediately tested.
Residual chlorine content test
Water treatment plants often use chlorine for disinfection of bacteria in the water. Long-term smell of chlorine may cause headaches and other symptoms. When chlorine reacts with organic acids, many carcinogenic by-products are produced. This time we measure the amount of water in the tap water. Chlorine, tested by adding reagent after decontamination of AQ-4000.
The tap water inside the cup on the left (sample A) and the water cup on the right contained tap water that had been purified by AQ-4000. We dropped an appropriate amount of indicator in each of the two samples. After stirring, we found that the color of sample A turned yellow. There was no change in Sample B. By comparing the "residual residual chlorine color table", we can see that the residual chlorine content in sample A is still relatively high, while the residual chlorine is not detected in sample B, showing the ability of AQ-4000 to remove residual chlorine. Perfect, almost 100% free chlorine in tap water.
PH Water Quality pH Test
PH value is also one of the most commonly used indicators for water quality detection. The pH of natural water is mostly in the range of 6-9. Although the pH of water has nothing to do with human health, it has not yet been proved. When CCTV also kicked the explosion of alkaline water to improve the body's PH lies. However, this time we used 1-2 drops of reagents, respectively, according to the displayed color and the color card control, you can read the PH value of the corresponding solution.
Tap water inside the left cup (Sample A), and the right cup filled with tap water that had been purified by AQ-4000. We dropped an appropriate amount of indicator in each of the two samples. After mixing, the color of both samples changed. The color of sample A turns blue-green, and sample B changes to sky blue. By comparing the “PH color chartâ€, we can see that sample A is weakly acidic, and the pH is about 6.5-7, and the sample The pH of B is about 7.5.
The PH value of drinking water only has certain reference significance, but it is not absolute, but it is generally believed that the natural weak alkaline water caused by non-processing results is beneficial to health.
TDS test
The TDS test is the most common method of drinking water testing. It is an abbreviation for total dissolved solids in English and is translated as total dissolved solids in Chinese. It is used to show how many milligrams of dissolved total solids are dissolved in one liter of water. The TDS is widely used in water treatment fields such as the United States. Its measurement principle indirectly reflects the TDS value by measuring the conductivity of water. The physical TDS value represents the dissolved substance content in water. The greater the TDS value, the better the water conductivity. The larger the value, the greater the content of impurities in the water, whereas the smaller the content of impurities, the TDS can only measure conductive substances in water, but it cannot measure bacteria, viruses and other substances.
The tap water inside the left cup (Sample A) is filled with tap water that has been purified by AQ-4000. We use the TDS pen to test the PPM values ​​of the two samples. After testing, the tap water has a PPM value of about 110. AQ-4000 purified tap water PPM down to 102 TDS value does not change much, because the product filters harmful substances while retaining beneficial minerals in the water.
Water speed test
The AQ-4000 uses an instant filter design. There is no water storage device, so users will be more concerned about the product's water output speed. What is the actual water discharge rate? The measured results are as follows.
The rated flow rate of the product only represents the maximum flow rate at which the water purifier can achieve the certified filtration effect. The rated flow value does not represent the actually used flow value. The actual flow rate of the product is affected by environmental factors such as water pressure and water quality. According to Xiao Bian, the flow rate of the water purifier is not as fast as possible. If the flow rate is too fast, the contact time between the raw water and the filter element will be insufficient, and the outlet water velocity will be lower than the rated flow rate to achieve the NSF-certified filtration effect.
The author used a 600ml plastic bottle for testing. The time for filling a bottle of water was 25 seconds, and the water speed was very good compared to the same type of product. For families with lower water pressure, it is recommended to install a booster pump to achieve the desired flow rate.
Edit summary: aquasana Aqsana AQ-4000 experience I feel very good, simple installation, easy replacement of the filter, the appearance of simple, price close to the people, in addition it does not need to plug in, can easily move, does not produce waste water, fly in the ointment is the speed of the water Slightly slower, the actual use needs to be packed in large containers in advance. The filter element can be replaced once every six months, and the price is also relatively affordable. It is a product worth recommending.
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