Ultrapure water machine extracted pure water and ultra-pure water can be saved for how long? Due to the ultrapure water machine extraction speed and efficiency has been much higher than the traditional standard of pure water production, has become one of the necessary equipment for the preparation of laboratory pure water, different ultrapure water machine can be produced out of the pure water quality is not the same, laboratory ultrapure water machine, although there are many brands and models, but most of the completion of the same, so the pure water machine produced pure water and ultrapure water can be preserved for how long?
Ultrapure water machine is much faster than the traditional pure water production equipment, has become one of the various water industries laboratory water equipment, different ultra-pure water machine out of ultra-pure water, although the quality of water is different, but in the maintenance of water quality is basically the same, so half of the water from the ultra-pure water machine can be maintained for how long, the following we come to say carefully.
Generally speaking, the higher the purity of the laboratory water is not easy to store for too long to 18.2MΩ.cm of ultrapure water, the longer it is placed on the better the more serious the decline, usually placed in an hour of ultrapure water and its resistivity is good to fall to 4MΩ.cm, PH fell to 5.7 or so, but also due to the impact of the environment, the water microorganisms will rapidly grow.
So usually ultrapure water is extracted should not be put out for a long time, should comply with the concept of use that is going to be used. At the same time in order to ensure the quality of pure water and ultrapure water, we should pay attention to the following points when taking water:
1, ultrapure water machine should be 7-10 days for a water pass, rinse, to prevent bacterial growth.
2, long-term inapplicability needs to be pure water machine, water tank in all the water discharge empty.
3, ultra-pure water machine to take water, the initial pure water and ultra-pure water should be discharged, such as water quality stabilization before taking water.
4, please do not place the water purifier and water storage tank in direct sunlight to prevent its bacterial growth.
The above is the ultrapure water machine can be stored after taking water time, the user needs to have a certain understanding of it, in order to better use the equipment, and do not waste the production of pure water!
Second, how to reduce the growth of microorganisms in the ultrapure water machine?
How to reduce the growth of microorganisms in the ultrapure water machine? Ultrapure water machine in use for a long time, due to the sealing of the environment, with the growth of the use of time, resulting in the final ultrapure water machine to obtain pure water and ultrapure water exceeds the standard, there is no way to reduce the ultrapure water machine microbial growth of the approach? Today, seepage source water purifier small editor brings you how to reduce the microbial growth of ultra-pure water machine method.
Ultrapure water machine microbial growth methods generally have the following reasons:
1, sealed environment due to poor contact water seepage phenomenon, ultimately leading to the internal environment is affected by external microorganisms, breeding bacteria.
2, the consumables have not been replaced for a long time, resulting in excessive accumulation of microorganisms on the reverse osmosis membrane, which ultimately leads to an increase in microorganisms and a decline in water quality.
3, long-term unused ultra-pure water machine, placed in the state of microbial growth.
4, the poor quality of incoming water, resulting in the pretreatment system consumes the consumables faster, ultimately leading to faster microbial reproduction.
Can reduce the ultra-pure water machine microbial growth of the following methods:
1, often to ensure that the ultrapure water machine is regularly powered on cycle, so that the pipeline into the running water cycle.
2, regular replacement of consumables, regular inspection of water quality, when the water quality is unqualified timely replacement, can effectively reduce the growth of microorganisms.
Pure water machine to remove the water quality is good or bad, not only to look at the pure water equipment, but also need to rely on our daily use of the process of how to operate correctly in order to keep the water quality of ultrapure water. The following is brought to you to maintain the water quality of ultrapure water way.
1, ultrapure water machine storage drum should be equipped with air filters to prevent air through the water intake infiltration into the storage drum and cause water contamination.
2, because the ultrapure water is easy to be contaminated by environmental factors, so the need to use the water is best to do that is to go that is to use, try to minimize the contact of ultrapure water and the environment.
3, ultra-pure water storage tank should try to avoid placing in direct sunlight.
4, long time storage in the storage bucket type of ultrapure water should try to avoid the use of water to prevent water quality decline due to prolonged storage.
5, ultrapure water for use, the initial ultrapure water should be discharged and then use the water vessel to take water.
6, long time not to use the water purifier, should be the pressure storage bucket of pure water all put off, in order to prevent contamination.
7, the water purifier needs to pass water once a week to prevent bacterial contamination.
8, the water should try to avoid producing blisters and affect the water quality.
What is the resistivity of water and water conductivity? In the water treatment industry we often hear conductivity, resistivity to indicate the purity of water, then conductivity, resistivity is what it means? What do they represent? How to test the conductivity and resistivity? Today we bring you the conductivity and resistivity of water measurement content and way.
The resistivity of water is a certain temperature, the side length of 1cm square between the relative sides of the resistance, the unit is Ω.cm or MΩ.cm. conductivity is the reciprocal of resistivity, the unit is S/cm (or μs/cm).
The resistivity of water (or conductivity) reflects the amount of salt in the water. Is an important indicator of the purity of water, the higher the purity of water, the lower the salt content, the greater the resistivity of water (conductivity is smaller).
Resistivity of water (or conductivity) by the purity of water, temperature and measurement of various factors, pure water resistivity (or conductivity) measurement is to choose a dynamic measurement method, and the use of temperature compensation will be converted to the measured value of the resistivity of 25 ℃, in order to facilitate the measurement and comparison.
To measure resistivity or conductivity, the conductivity electrode or measuring device is connected to the water production system. Pass water to the pipeline measuring device and conductivity pool in the air bubbles driven out, adjust the water flow rate (generally not less than 0.3m / s), and in the outlet of the conductivity pool to install a thermometer, according to the instructions of the instrument to operate the conductivity meter (preheating, zero, calibration and measurement), to be stabilized after the instrument readings, record the water temperature and the value of conductivity. Online measurement should use a conductivity meter with thermometer compensation, which can directly read the conductivity value at 25℃. The reciprocal of the conductivity is the resistivity value
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