LC PURE Laboratory MINI-150 EDI Module A Reliable Choice for Ultra-pure Water Preparation in Small-scale Labs

In various small-scale laboratories, the stable supply of ultra-pure water is crucial to ensuring the accuracy of experiments. The LC PURE Laboratory MINI-150 EDI module, with its efficient water production capacity and compact design, has become an ideal device to meet the needs of such scenarios.

Working Principle

The LC PURE Laboratory MINI-150 EDI module utilizes EDI technology, which organically combines electrodialysis and ion exchange. The mixed ion exchange resins inside adsorb cations and anions in water, and at the same time, these adsorbed ions are removed through anion and cation exchange membranes respectively under the action of a DC electric field.

A fresh water chamber is formed between the anion exchange membrane facing the positive electrode and the cation exchange membrane facing the negative electrode, while a concentrated water chamber is composed between the anion membrane facing the negative electrode and the cation membrane facing the positive electrode. When water flows through the fresh water chamber and concentrated water chamber, the ion exchange resins adsorb ions in the water. The electrodes at both ends of the module provide a transverse DC electric field, which drives the ions through the ion exchange membranes, continuously improving the purity of water in the fresh water chamber and increasing the ion concentration in the concentrated water chamber. The MINI-150 achieves continuous production of ultra-pure water through the combination of such units.

Product Parameter Table

Inlet Water Quality Requirements

The inlet water of the module must be the product water of reverse osmosis (RO), and its inlet conductivity should be less than 10μs/cm (including CO₂ and silicon). If it is less than 5μs/cm, it is more conducive to extending the service life of the module and reducing losses. Other requirements are as follows:

• Temperature: 5-30℃

• Inlet water pressure: 0.1-0.3MPa

• Maximum total chlorine content (i.e., Cl₂ content): ﹤0.02 ppm

• Iron (Fe): ﹤0.01 ppm

• Manganese (Mn): ﹤0.01 ppm

• Sulfide (S⁻): ﹤0.01 ppm

• pH value: 7-8

• Total hardness (calculated as CaCO₃): ﹤0.5 ppm

• Dissolved organic matter (TOC, calculated as C): ﹤0.5 ppm

• Silicon (calculated as SiSO₂): ﹤0.5 ppm

• Oxidizing substances: Not detected

• Oil/fat: Not detected

Practical Application Case

A small laboratory engaged in biopharmaceutical research and development mainly conducts experiments on drug component analysis and purity testing, which has extremely high requirements on the purity of experimental water and needs a stable supply of ultra-pure water. The previously used pure water equipment had unstable water production and large fluctuations in water quality, which affected the accuracy of experimental results.

After introducing the LC PURE Laboratory MINI-150, the experimental water supply of the laboratory has been reliably guaranteed. Its standard water production flow of 150L/h fully meets the daily water demand of the laboratory. The quality of the produced water is stable, and the resistivity is always maintained at a high level, ensuring the accuracy of various detection data in drug analysis experiments. In addition, the equipment is easy to install and occupies a small area, which well adapts to the limited space of the laboratory. Since there is no need to treat acid and alkali wastewater, it also meets the environmental protection requirements of the laboratory. The concentrated water can also be used for cleaning the laboratory floor and instruments, improving the utilization rate of water resources.

Product Advantages

1. Continuous and stable water production: It can continuously produce ultra-pure water without complex regeneration operations, reducing standby equipment and ensuring the uninterrupted supply of experimental water.

2. Easy installation: The installation conditions are simple, and it occupies a small area, which is suitable for laboratories with limited space and will not have a great impact on the layout of the laboratory.

3. Environmental protection and economy: There is no need to treat acid and alkali wastewater, and there is no neutralization, discharge and treatment system for acid and alkali wastewater, which is in line with the concept of environmental protection. The concentrated water can be directly reused, and the amount of electrode water discharged is small, reducing the operating cost.

4. Convenient maintenance: The design is practical, maintenance and expansion are relatively simple, and only a short shutdown is required during maintenance and replacement, which will not affect the experimental progress too much.

5. Stable water quality: The quality of the produced water is stable, avoiding the problem of water quality changes in ordinary mixed beds, and providing a stable and reliable water quality foundation for experiments.

With its excellent performance and practical design, the LC PURE Laboratory MINI-150 provides an efficient and reliable solution for ultra-pure water preparation in small-scale laboratories and is an ideal choice for carrying out precise experiments in laboratories.