LC PURE Laboratory MINI-200 EDI Module A Stable Ultra-Pure Water Supply Expert for Medium-Sized Laboratory Scenarios

In the daily operation of medium-sized laboratories, a stable and sufficient supply of ultra-pure water is crucial to ensuring the smooth progress of experiments. The LC PURE Laboratory MINI-200 EDI module, with its suitable water production capacity and reliable performance, has become an ideal choice for such scenarios.

Working Principle

The core working principle of the LC PURE Laboratory MINI-200 EDI module is the integration of electrodialysis and ion exchange technologies. The internal mixed ion exchange resins adsorb cations and anions in water. At the same time, the electrodes at both ends of the module provide a transverse DC electric field. Under the action of this electric field, the adsorbed ions pass through the corresponding anion and cation exchange membranes respectively.

A fresh water chamber is formed between the anion exchange membrane facing the positive electrode and the cation exchange membrane facing the negative electrode, and a concentrated water chamber is formed between the anion membrane facing the negative electrode and the cation membrane facing the positive electrode. When water flows through these chambers, ions in the fresh water chamber are continuously removed, gradually improving the water purity, while the concentrated water chamber collects the removed ions and discharges them. The MINI-200 realizes the continuous production of ultra-pure water through the combination of such units, meeting the water demand of medium-sized laboratory scenarios.

Detailed Parameter Table

Inlet Water Quality Requirements

To ensure the stable operation and prolong the service life of the MINI-200 EDI module, there are strict requirements for the inlet water:

• The inlet water must be reverse osmosis (RO) product water, with an inlet conductivity of less than 10μs/cm (including CO₂ and silicon). If it can be controlled within 5μs/cm, the module loss can be further reduced.

• The temperature should be maintained at 5-30℃, and the inlet water pressure should be kept at 0.1-0.3MPa.

• The maximum total chlorine content (Cl₂) should be less than 0.02 ppm, and iron (Fe), manganese (Mn), and sulfide (S⁻) should all be less than 0.01 ppm.

• The pH value should be between 7-8, and the total hardness (calculated as CaCO₃), dissolved organic matter (TOC, calculated as C), and silicon (calculated as SiSO₂) should all be less than 0.5 ppm.

• Oxidizing substances, oil/grease must not be detected.

Practical Application Case

A university biology laboratory mainly conducts cell culture and protein analysis experiments, requiring about 180L of ultra-pure water per day, with extremely high water quality requirements (resistivity ≥15MΩ·cm). The previously used pure water equipment had large fluctuations in water production and required shutdown for regeneration every week, which seriously affected the experimental progress.

After introducing the MINI-200, the laboratory has achieved:

1. A stable daily water production of 200L, fully meeting the experimental water demand, without worrying about insufficient water volume.

2. The water resistivity is stable at 16-18MΩ·cm, eliminating cell culture contamination and experimental data deviation caused by water quality fluctuations, and the experimental success rate has increased by 25%.

3. No manual acid-base regeneration operation is needed, only simple inspections are required monthly, saving the labor cost of 2 laboratory staff.

4. The concentrated water is recycled for cleaning laboratory floors and glassware, saving about 3 tons of water per month.

Product Advantages

1. Stable and sufficient water production: The standard water production flow of 200L/h can meet the daily water demand of medium-sized laboratories, and the water quality is stable, ensuring the reliability of experimental results.

2. Convenient installation and maintenance: The installation conditions are simple, with a small footprint. The 150mm wide body can be easily integrated into the laboratory layout; maintenance only requires a short shutdown, without affecting the experimental process.

3. Environmental protection and economy: No need to treat acid and alkali wastewater, meeting environmental protection requirements. The concentrated water can be reused, reducing water waste and operating costs.

4. Easy operation: It can realize unattended operation, reducing human operation errors and saving energy for laboratory managers.

With its stable performance and suitable water production capacity, the LC PURE Laboratory MINI-200 EDI module provides an efficient and reliable ultra-pure water solution for medium-sized laboratory scenarios, facilitating the smooth progress of experimental work.