Impurities in the water of laboratory ultrapure water machines

To understand the laboratory ultrapure water machine, it is necessary to understand the impurities in the water that the ultrapure water machine needs to remove. Impurities in water are generally divided into nine types. Particulate matter.

Including sediment, rust, algae, suspended solids and other visible particulate impurities, particulate matter is the main cause of turbidity, color, odor. Colloidal substances. Colloidal matter is a substance that is larger than ionic matter and smaller than particulate matter.

A colloid is a collection of many molecules and ions. Ionic substances. Both cations and anions are included.

Ionic substances are usually soluble in water and can be removed by methods such as ion exchange or desalination. Dissolved gases that do not react. It refers to gases such as nitrogen that do not react chemically with water, produce compounds that introduce ionic pollutants into the water, and affect the pH value of the water.

Reactive dissolved gases. Common dissolved gases in natural water include oxygen, carbon dioxide, and sometimes hydrogen sulfide and ammonia. Most of these gases dissolved in water have a corrosive effect on metals, which is an important factor causing metal corrosion in water systems.

Microbe. It mainly refers to the amount of bacteria in the water. Heat.

The heat source, also known as bacterial endotoxin, is mainly used in medical water, especially for injection water, and the content control of the heat source should be considered. Organic matter. The organic matter in the water is mainly humic acid, domestic sewage and industrial wastewater pollutants.

Residual disinfectant. In order to control the amount of bacteria in the water, water companies will add disinfectants to control the total bacterial count. Commonly used disinfectants are chlorine-containing agents, which when added to water produce highly oxidizing compounds such as residual chlorine.

Process performance characteristics of ultra-pure water machine.

1. The operation design is ergonomic, and the ultra-pure water machine has the functions of self-fault diagnosis and alarm, and self-repair of some faults.

2. Fully automatic control of microcomputer, self-test of system start-up, automatic protection of water and power failure, automatic protection of hydropower overpressure, automatic maintenance and flushing of the system, etc., make maintenance and maintenance simpler.

3. The ultra-pure water machine system can run continuously for a long time (water consumption: 200L days), and the water quality is stable to ensure continuous water supply flow and pressure.

4. Large control panel, touch screen optional, ultra-pure water machine monitoring and control data, data can be stored and transmitted, equipped with PC interface, can be connected to computer terminal (optional), in line with the modern medical experiment test data and standardization construction.

Dissolve or decompose organic matter: In the raw water, industrial enterprises will discharge dirt, detergents, biodegradables and metabolites of microorganisms.

Dissolved non-burying machine salt: refers to the sodium, calcium, magnesium and other salts in the water, which is the positive ion content formed by dissolving in water.

Particulate matter: refers to the particulate matter in the raw water incoming water, which can be produced in many places, and it can be said to be ubiquitous.

How to choose laboratory ultrapure water equipment, it is recommended that you refer to the following three points:

1. Analysis of self-water demand: including raw water quality analysis, effluent water quality analysis, self-water consumption analysis, equipment floor area, installation site confirmation, pipeline layout, etc., on the basis of careful analysis of the above points, we can correctly select the appropriate pure water equipment.

2. Analysis of the strength of the manufacturer: the current water treatment manufacturers are particularly many, many businesses are not practical, and need to consider before choosing: the actual plant area of the manufacturer, the number of companies, the technical team, the brand influence, the installation case, various qualification certifications, etc., and the choice of powerful manufacturers can ensure product quality and after-sales service.

3. Product analysis: the same water output, will also be differentiated because of different manufacturers, first of all, we need to understand where the differentiation is, and the selection of pure water equipment needs to pay attention to the core components of the product.

Yes, the following is a detailed introduction, our company has many types of laboratory pure water equipment, including laboratory pure water equipment, the process adopts reverse osmosis or reverse osmosis plus bipolar deionization equipment, or reverse osmosis + EDI equipment, which has the following characteristics:

1.Fully automatic water production and dispensing, which can be used at any time and opened at any time. The storage tank will automatically stop when it is full. When the device is in standby, the storage tank will automatically operate.

The membrane has the function of automatic flushing, which greatly prolongs the service life of the membrane.

4.Compared with the water source with more impurities, it can be easily upgraded for pretreatment.

5.The appearance of the whole equipment is exquisite, the design is reasonable, and the overhaul is all over.

6.Automated working operation mode, and also set tap water shortage, high pressure and stop-and-use features.

Laboratory Pure Water Equipment Process:

1.Pretreatment Reverse osmosis Intermediate Water Tank Water Pump EDI Device Purified Water Tank Pure Water Pump Ultraviolet Sterilizer Polished Mixed Bed Precision Filter Water Object ( 18mcm)

2.Pretreatment First-stage reverse osmosis Dosing machine (pH adjustment) Intermediate water tank Second-stage reverse osmosis (positive charge reverse osmosis membrane) Pure water tank Pure water pump EDI device Ultraviolet sterilizer Precision filter Water object (17m.)cm)

3.Pretreatment Reverse osmosis Intermediate Water Tank Water Pump EDI Device Pure Water Tank Pure Water Pump Ultraviolet Sterilizer Precision Filter Water Object (15m.)cm)

The application scope of laboratory pure water equipment involves hospitals, university scientific research, quality inspection units, chemical plants, pharmaceutical factories, water quality monitoring centers, animal husbandry industry, water plants, disease control centers, seed monitoring stations, battery factories, LCD screen factories, precision circuit factories, dust-free product production, etc. In addition, some high-end experiments such as animal and plant cell culture, high performance liquid chromatography, mass spectrometry, plasma coupled spectroscopy, atomic fluorescence, gel analysis, cellular immunity, IVF, TOC analysis, PCR experiments, organic matter analysis, trace element detection, two-dimensional electrophoresis, molecular biology experiments, genetics experiments, atomic absorption emission spectroscopy and so on. These experiments have quite strict requirements for the experimental water quality, not only the resistivity of the water quality, but also the organic matter, particulate matter, bacteria and pyrogens in the water quality, and the laboratory pure water equipment can meet these requirements.

The system does not produce water:

1. It may be that the tap water is not turned on or the water pressure is not enough, the system will send out an alarm sound, turn on the tap water or short the low-voltage protection switch.

A short circuit may cause the booster pump to dry up and damage the pump.

2. It may be that the pretreatment filter element is blocked, the water flux is reduced or no water passes through, and the pretreatment filter element is replaced.

3. The low-voltage protection switch is damaged and cannot be closed normally, and the low-voltage protection switch is replaced.

4. The high-voltage protection switch is damaged and cannot be closed normally, at this time, the full water indicator will be on, and the high-voltage protection switch will be replaced.

The system has been making water: the high-voltage protection switch is damaged and cannot be disconnected normally, the water production indicator is always on, and the high-voltage protection switch is replaced.

The system converts water production and full water too frequently: it may be that the ball valve of the pure water bucket is not opened and cannot store water, so open the ball valve of the pure water bucket.

The water production of the system is on the low side:

1. It may be that the reverse osmosis membrane is blocked, and the reverse osmosis membrane should be replaced.

2. It may be that the water supply is insufficient, improve the water supply or replace the pretreatment filter element.

3. It may be that the booster pump is damaged, and the booster pump should be replaced.

The main purpose of a pure water distribution system is to deliver pure water to each point of use through distribution pumps and pure water distribution lines. In order to maintain the flow rate and pressure of pure water in the pipeline, the laboratory pure water designer should accurately calculate the pressure loss caused by the piping system and the equipment in the pipeline to select the appropriate dispensing pump.

The pure water distribution system should also include additional equipment to further purify the pure water while maintaining the quality of the pure water, and to monitor the water quality in the pipeline. Therefore, it may be necessary to use a line UV device to reduce the microbial and total organic carbon levels in the line pure water, or a line sterilization filter to reduce the microbial content in the line water purification.

Water quality monitoring at the stage of the pure water distribution system is very important. Because the water quality in the pipeline is the real water quality that we get from each water point and finally use it for experiments. When considering ultrapure water systems, designers of laboratory water purification systems should clarify the use of ultrapure water.

Generally speaking, pure water is sufficient for most experiments. And the water quality of ultrapure water is also different due to different applications, so the purification method and water yield of ultrapure water should be determined according to the use and amount of ultrapure water, so as to choose the appropriate ultrapure water equipment.

Laboratory ultrapure water equipment is a kind of laboratory water purification equipment, which is a water treatment device that removes all solid impurities, salt ions, bacteria and viruses in water by filtration, reverse osmosis, electrodialyzer, ion exchanger, ultraviolet sterilization and other methods.

Laboratory ultrapure water equipment is widely used in pharmaceutical, electronics, chemical, biophysical and chemical laboratories and other industries. Laboratory ultrapure water machines can usually produce both pure water and ultrapure water.

1.Pretreatment System Reverse Osmosis System Intermediate Water Tank Coarse Mixed Bed Fine Mixed Bed Pure Water Tank Pure Water Pump Ultraviolet Sterilizer Polishing Mixed Bed Precision Filter Water Object ( 18m .cm) (traditional craft).

2.Pretreatment Reverse osmosis Intermediate Water Tank Water Pump EDI Unit Purification Water Tank Pure Water Pump Ultraviolet Sterilizer Polished Mixed Bed or Precision Filter Water Object (18m.)cm) (latest technology).

3.Pretreatment First-stage reverse osmosis Dosing machine (pH adjustment) Intermediate water tank Second-stage reverse osmosis (positive charge reverse osmosis membrane) Pure water tank Pure water pump EDI device Ultraviolet sterilizer or precision filter Water object (17m.)cm) (latest technology).

4.Pretreatment Reverse osmosis Intermediate Water Tank Water Pump EDI Unit Pure Water Tank Pure Water Pump Ultraviolet Sterilizer or Precision Filter Water Object (15m.)cm) (latest technology).

5.Pretreatment System Reverse Osmosis System Intermediate Water Tank Pure Water Pump Coarse Mixed Bed Fine Mixed Bed Ultraviolet Sterilizer Precision Filter Water Object ( 15m .cm) (traditional craft).

Ultrapure water equipment is a water treatment equipment that uses pretreatment, reverse osmosis technology, ultra-purification treatment and post-treatment to almost completely remove the conductive medium in the water, and remove the colloidal substances, gases and organic substances that do not dissociate in the water to a very low level.

Ultrapure water was originally produced by the American scientific and technological community in order to develop ultrapure materials (semiconductor original materials, nano fine ceramic materials, etc.) by distillation, deionization, reverse osmosis technology or other appropriate supercritical fine technology, and now ultrapure water has been widely used in biology, medicine, automobile and other fields. In addition to water molecules (H20), there are almost no impurities in this water, and there are no bacteria, viruses, chlorine-containing dioxins and other organic substances, of course, there are no minerals and trace elements required by the human body, ultrapure water has no hardness, sweet taste, and is often called soft water, which can be drunk directly or boiled. Ultrapure water is difficult to achieve in general processes, such as the resistivity of water is greater than 18m*cm, close to it is called ultrapure water.

If you don't know the pH value, volume, and purity of sodium hydroxide of water, others won't know how much sodium hydroxide to add. There are three suggestions: first, sodium hydroxide should be selected according to the experimental requirements with high purity, and less impurities should be introduced; Second, add sodium hydroxide slowly with a titration device, such as a burette, micropipette or titrator.

Third, pH is not easy to measure, you can try to use imported pH test paper.

Laboratory ultrapure water machine with pretreatment, reverse osmosis, nuclear grade mixed bed deionization fine filtration, ultrafiltration filtration, dual-wavelength ultraviolet lamp digestion, sterilization and other processes into one, beautiful appearance, small footprint, more convenient to use, all configurations have been assembled in advance, users only need to connect the tap water to the machine can easily produce ultrapure water, use at any time.