What is the difference between pure water, ultrapure water and double distilled water, six distilled

The source water quality and water demand are quite different, and the three major subsystems of pretreatment, reverse osmosis and post-treatment of the ultrapure water system have different selection and configuration schemes for users with different needs. To this end, Youpu provides a selection guide for Youpu water purifiers to help customers choose the right laboratory ultrapure water solution for them. 1. Confirm the total water consumption - the water volume of the main mechanism - the volume of the water tank 1

The sales engineer first confirms the user's daily water consumption during the peak period within two years through customer demand research, and the water production of the selected model should meet the demand for 8 hours (note: users in the northern market must take into account the factors of the decline in the water production of RO membrane in winter), and the water tank volume should meet the user's water consumption within 2 hours during the peak period; 2.Confirm the total annual water consumption of the user through demand research, and calculate the number and cost of replacement consumables for the primary model.

2. Confirm the water....

These concepts are collectively referred to as water, but water of different water quality is distinguished (or the purity of the water) based on the amount of impurities contained in the water. Ultrapure water: ultrapur water ultrapure water machine) not only removes the conductive medium in the water almost completely, but also removes the colloidal substances, gases and organic substances in the water to a very low level of water.

The resistivity is greater than 18m*cm or close to the limit value. In a word, the water contains only H2oro water: also called pure water.

That is, the water filtered through the reverse osmosis membrane, the pore size of the reverse osmosis membrane is generally between 10A and 100A, so it can remove more than 95% of ionic impurities. Distilled water: water obtained by vaporizing H2O and subsequently separating the vapor by using the difference in the volatility of each component in the liquid mixture.

ddh2odistillation-distilh2o double distilled water).

Superheated steamYesSaturated steamObtained by heating up。It contains no droplets or mist and is an actual gas. The temperature and pressure parameters of superheated steam are two independent parameters, and the density of the superheated steam should be determined by these two parameters.

Introduction to superheated steam and pure steaming

Superheated steam is steam whose temperature is higher than the saturation temperature at the corresponding pressure. Steam superheat.

Refers to how many degrees the steam is higher than the saturation temperature at the corresponding pressure, for example, a standard atmospheric pressure.

, the saturation temperature of water vapor is 100 degrees Celsius.

If the temperature of the water vapor is equal to 120 degrees Celsius, it is called superheated steam, and the superheat of superheated steam is 20 degrees.

Definition of superheated steam The liquid in the saturated state is called saturated liquid, and its corresponding steam is saturated steam, but initially it is only wet saturated steam, and it is dry saturated steam after the water in the steam completely evaporates The process temperature of steam from unsaturated to wet saturated to dry saturated slag does not increase, and the temperature will rise if it continues to be heated after dry saturation and becomes superheated steam.

It is also explained that the epitaxy of steam and vapor vapor is larger than that of steam, including slag orange vapor, and the gas of vapor refers to various gases, such as poison gas and biogas. Any liquid or solid such as water, mercury, benzene, iodine that becomes a gas due to evaporation, boiling or sublimation can be called vapor, and steam specifically refers to water in a gaseous state, such as a mass or water vapor.

Double change noisy skin steaming water is a type of heavy steaming water.

Redistilled water is the water obtained by distilling water once and again again.

According to the requirements of experiments and scientific research, it can be divided into: double distilled water and triple distilled water.

Distilled water. The difference in the volatility of each component in the nuclear difference liquid mixture is used to vaporize H2O and then condense and separate the vapor part to contact the water that is quickly obtained.

Deionized water. It refers to pure water after the removal of impurities in the form of ions.

1. The composition of pure water, ultrapure water and double distilled water and six distilled water (distilled water) is different.

Pure water and ultrapure water, also known as high purity water, refers to water with a resistivity of 18 m * cm (25). In addition to water molecules, there are almost no impurities, no bacteria, viruses, chlorine-containing dioxins and other organic matter, and of course, there are no minerals and trace elements required by the human body, that is, water that almost removes all atoms except oxygen and hydrogen.

Double distilled water, six distilled water (distilled water) is water prepared by distillation and condensation, so the inorganic salts in it will contain very little. If the water is only distilled once, although the non-volatile components (salts) are removed, the volatile components (ammonia, carbon dioxide, organic matter) in the water will still enter the distilled water.

2. The ionic action of pure water, ultrapure water and double distilled water and six distilled water (distilled water) is different.

Pure water and ultrapure water can be used in the following fields: electronics, electric power, electroplating, lighting appliances, laboratories, food, papermaking, daily chemicals, building materials, paintmaking, batteries, laboratory, biology, pharmaceutical, petroleum, chemical, steel, glass and other fields.

Monocrystalline silicon, semiconductor wafer cutting manufacturing, semiconductor chips, semiconductor packaging, lead cabinets, integrated circuits, liquid crystal displays, conductive glass, picture tubes, circuit boards, optical communications, computer components, capacitor clean products and various components and other production processes.

Double distilled water, six distilled water (distilled water) In the pharmaceutical industry, the role of distilled water is due to hypotonic effect. Rinse the surgical wound with distilled water to make the tumor cells that may remain in the wound absorb water and swell, rupture, necrosis, and lose their activity, so as to avoid the growth of tumors in the wound.

Some chemistry experiments in schools require the use of distilled water, which has no electrolytes, no free ions, or no impurities. You need to analyze the specific problem on a case-by-case basis to see if it is due to its non-conductive properties, or hypotonic effect, or if there are no other ions and no chemical reactions.

1. Double distilled water is a kind of redistilled water, which is the water obtained by distillation after one distillation. English double distilled water, abbreviated as ddwater.

2. Distilled water: water prepared by distillation and condensation, so the inorganic salt plum ridge band in it will contain very little. If the water is only distilled once, although the non-volatile components (salts) in it are removed, the volatile components (ammonia, carbon dioxide, organic matter) in the water will still enter the distilled water.

3. Double distilled water: two distillations.

4. Tri-distilled water: three distillations.

1.Distilled water: When water is heated and boiled, it contains dissolved air and organic matter in the water, which will also be vaporized and cooled and then dissolved in the cooled water, and distilled water is not pure water.

Secondary distilled water is nothing more than cleaner than primary distilled water.

2.Ultrapure water and high-purity water are nothing more than the difference in the purity of water.

Strictly speaking, there is no such thing as absolutely pure water. Dekingh: I think distilled water and ultrapure water should be the difference between them in terms of resistance, and it should be that absolute pure water is non-conductive, that is, the resistance is infinite, so the greater the resistance, the higher the purity of the water. There is a kind of ultrapure water machine (Eco brand, which is used in my laboratory for analysis) There is a number on it to display the resistance of the water taken down, and when the analysis is done, the resistance is 18m cm3 before use, and this kind of water is ultrapure water in the general sense.

1.Distilled water: It is water that is distilled and condensed, and the second distillation is called re-distilled water, and the third distillation is called three-distilled water.

Sometimes for special purposes, appropriate reagents will be added before steaming, such as for ammonia-free water, acid will be added to the water; Water with low oxygen consumption, potassium permanganate and acids are added. Industrial distilled water is pure water obtained by distilled water method, the purity of the water obtained by ordinary distillation is not high, and the effluent can be very pure after multi-stage distillation, and the cost is relatively high.

2.Deionized water is to flow water through the ion exchange column, try to remove ions, for the preparation of metal ion standard solution is better, the blank is low, the disadvantage is that the polymer and other unionized compounds in the water can not be removed.

3.There is sometimes a mixture between the two, such as ion exchange prior to distillation, and this water is mostly used in the pharmaceutical industry. There is also a re-distillation (sub-boiling) of purified water for the original absorption of graphite furnace analysis, which can greatly reduce the blank, and of course can also be used for the mobile phase of the liquid phase.

4.High-purity water is a general term for high-purity water, whether you are distilled water, or ion exchange, or EDI (electrodeionization) continuous electrodesalination technology, or electroosmosis, or reverse osmosis, or membrane separation or its combination of processes to produce high-purity water, can be called high-purity water.

5.As for ultrapure water, it can be regarded as a degree that is difficult to achieve by general processes, such as the resistivity of water is greater than 18m*cm (there is no obvious boundary), it is called ultrapure water. The key is to look at the purity of your water and various characteristic indicators, such as conductivity or resistivity, pH value, sodium, heavy metals, silica, dissolved organic matter, particulates, and microbial indicators.

First of all, these concepts are collectively referred to as water, but based on the amount of impurities contained in the water, DU (which can also be said to be the purity of the water) is not the same as the quality of water. Ultrapure water: Ultrapure water not only removes the conductive medium in the water almost completely, but also removes the colloidal substances, gases and organic matter in the water to a very low level.

The resistivity is greater than 18m*cm or close to the limit value. In a word, there is only H2O. in the waterRo water:

Also known as pure water. That is, the water filtered through the reverse osmosis membrane, the pore size of the reverse osmosis membrane is generally between 10A and 100A, so it can remove more than 95% of ionic impurities. Distilled water.

The water obtained by using the difference in the volatility of each component in the liquid mixture is used to vaporize H2O and subsequently condense and separate the vapor part. DDH2O: Distillation-Distillation H2O (double distilled water), water obtained by 2 distillations.

Deionized water, water that removes both cations and cations from the water. Ions in water are mainly removed by RO membranes and mixed-bed resins. However, there are also many people who call RO water deionized water, which is inaccurate.

Ultrapure water is the purest water nowadays, followed by two-stage reverse osmosis water (two-stage RO water), double-distilled water (DDH2O), pure water (RO water), and distilled water.

Double-distilled water is secondary distillation with purified water.

1.In life, the main function of distilled water is that it does not conduct electricity, ensures the stable operation of the machine, and prolongs the service life of electrical appliances. 2.In the pharmaceutical industry, the tumor cells that may remain in the wound absorb water and swell, rupture, necrosis, and lose their activity, so as to prevent the tumor from growing and growing in the wound.

Double distilled water is the water produced by the first distillation as raw water again, distilled once, a total of two distillations, the resulting water, double distilled water, also called secondary distilled water, is smaller than the conductivity of primary distilled water, does not contain gas.

Double distilled water is the second distillation of pure water, which is used when purity is required.

Double-distilled water is to evaporate the distilled water again, and the purpose of multiple distillations is to maximize its purity.

Its uses include:

1.It is utilized as non-conductive.

2.Using the hypotonic effect of distilled water, 3Distilled water is used without electrolytes, free ions, impurities.