Laboratory Water Purifier 20L 30L 40L
Multi-stage water purification system delivering both RO and DI water through dual outlets, with touchscreen monitoring and output rates from 20-40L/hour for analytical and microbiological applications.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The Laboratory Water Purifier delivers high-purity water through a comprehensive six-stage purification process (PF+AC+RO+UV+DI+TF) for analytical chemistry, microbiology, and environmental testing applications. The system provides both reverse osmosis (RO) and deionized (DI) water outputs through dual outlets of each type, supporting concurrent laboratory workflows requiring different water grades. Available in 20L, 30L, and 40L hourly output capacities to match laboratory throughput requirements.
The purifier achieves DI water resistivity specifications with conductivity below 0.1 μS/cm, heavy metal content under 0.1 ppb, and bacterial count under 1 CFU/mL for particles greater than 0.2 μm. RO water quality features ion and organic rejection rates exceeding 99%, with particle and bacterial rejection rates also above 99%. A 7-inch touchscreen interface provides real-time monitoring of water quality parameters and system status throughout the purification process.
How It Works
The six-stage purification process begins with pre-filtration (PF) to remove larger particulates, followed by activated carbon (AC) filtration to adsorb chlorine and organic compounds. Reverse osmosis (RO) membranes then remove dissolved ions, bacteria, and remaining organics through selective permeability under pressure. UV treatment inactivates remaining microorganisms through DNA damage at germicidal wavelengths.
Deionization (DI) columns containing mixed-bed ion exchange resins remove residual ionic species through cation-anion exchange mechanisms, achieving high resistivity water. Terminal filtration (TF) provides final particulate removal before water reaches the outlet. The system monitors water quality parameters continuously, displaying conductivity, flow rates, and system status on the touchscreen interface.
Dual outlet design allows simultaneous access to both RO water (suitable for general laboratory use and equipment cleaning) and DI water (required for analytical procedures and trace analysis). The multi-stage approach ensures consistent water quality while maximizing membrane and resin lifespan through progressive contaminant removal.
Features & Benefits
Automation Level
- semi-automated
BK-DI-30L
- BK-DI-40L
Water Output Type
- RO water outlet*2, DI water outlet*2
Water Output Speed(25℃)
- 20L/H
30L/H
- 40L/H
Purifying Procedure
- PF+AC+RO+UV+DI+TF
DI Water Quality
- Resistivity
Conductivity
- 0.055~0.1μs/cm
Heavy Metal
- ＜0.1ppd
Particle
- ＜0.1cfu/mL
Bacteria(＞0.2μm)
- ＜1/mL
RO Water Quality
- Ion Rejection Rate
Organic Rejection Rate
- ＞99%
Particle and Bacteria Rejection Rate
- ＞99%
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Clinical Diagnostics
- Environmental Monitoring
- Materials Science
- Microbiology
- Pharmaceutical QC
Display Type
- 7-inch touch screen
Weight
- 46.5 kg
Dimensions
- L: 64.0 mm
- W: 53.5 mm
- H: 40.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Purification Stages | Six-stage process (PF+AC+RO+UV+DI+TF) | Basic systems often use 3-4 stages without UV sterilization or terminal filtration | Comprehensive contamination removal ensures consistent water quality for sensitive analytical procedures |
| Output Options | Dual outlets each for RO and DI water (4 total) | Single outlet systems require manual switching between water grades | Simultaneous access to different water grades eliminates workflow interruptions |
| DI Water Conductivity | 0.055-0.1 μS/cm | Entry-level systems may achieve only 1-5 μS/cm | Lower ionic contamination prevents interference in trace analysis and electrochemical measurements |
| Production Capacity | 20L/H, 30L/H, or 40L/H options | Smaller systems typically produce 5-15L/H | Higher throughput supports busy laboratories with multiple concurrent water demands |
| Interface | 7-inch touchscreen display | Basic models use simple LED indicators or small LCD screens | Comprehensive real-time monitoring enables proactive maintenance and quality assurance |
| Heavy Metal Specification | < 0.1 ppb | Many systems do not specify trace metal levels | Documented low metal content ensures suitability for ICP-MS and trace analysis applications |
This system offers comprehensive multi-stage purification with dual-grade water output and high production capacity. The touchscreen interface and specified trace metal levels address requirements of analytical laboratories requiring documented water quality for sensitive measurements.
Practical Tips
Verify conductivity readings monthly against a certified reference standard to ensure measurement accuracy.
Why: Sensor drift affects water quality monitoring and determines when maintenance is required.
Replace pre-filters when differential pressure increases or water quality parameters begin to decline.
Why: Pre-filter maintenance extends RO membrane life and maintains system efficiency.
Use RO water for general cleaning and equipment rinsing, reserving DI water for analytical sample preparation.
Why: Efficient water grade selection reduces operating costs while ensuring analytical quality.
Document water quality parameters at the start of each analytical batch for quality assurance records.
Why: Quality documentation supports method validation and troubleshooting of analytical results.
If DI water conductivity increases, check resin bed saturation and UV lamp operation before replacing membranes.
Why: Systematic troubleshooting identifies the correct maintenance action and avoids unnecessary component replacement.
Ensure UV lamp housing remains closed during operation and follow lockout procedures during maintenance.
Why: UV exposure can cause eye and skin damage during lamp replacement or system service.
Sanitize DI water outlets weekly with appropriate disinfectant to prevent biofilm formation.
Why: Biofilm growth in low-flow outlets can increase bacterial counts and compromise water quality.
Setup Guide
What’s in the Box
- Laboratory water purifier main unit
- Power cord and electrical connections
- Water inlet and outlet tubing (typical)
- Mounting hardware and fittings (typical)
- User manual and installation guide (typical)
- Water quality test certificate (typical)
Warranty
ConductScience provides standard manufacturer warranty coverage with technical support for installation and operational guidance. Extended service plans available for preventive maintenance and component replacement.
Compliance
References
Background reading relevant to this product:
What is the difference between the RO and DI water outputs?
RO water has >99% rejection of ions, organics, particles and bacteria but retains some dissolved species. DI water undergoes additional ion exchange treatment achieving 0.055-0.1 μS/cm conductivity for analytical applications requiring minimal ionic contamination.
How frequently should filtration components be replaced?
Replacement frequency depends on feed water quality and usage volume. Monitor conductivity readings and flow rates through the touchscreen interface to determine when pre-filters, RO membranes, or DI resins require service.
Can this system handle high-TDS feed water?
The multi-stage design handles variable feed water quality, but high total dissolved solids will reduce membrane lifespan and require more frequent maintenance. Consult product datasheet for specific feed water quality limits.
What data can be monitored and recorded?
The 7-inch touchscreen displays real-time conductivity, flow rates, system pressure, and component status. Consult product datasheet for data logging capabilities and output formats.
Is the system suitable for trace metal analysis sample preparation?
Yes, with heavy metal content <0.1 ppb, the DI water output meets requirements for ICP-MS sample preparation and other trace metal analytical methods.
How does output capacity vary with water temperature?
Specified output rates (20L/H, 30L/H, 40L/H) are measured at 25°C. Lower temperatures will reduce membrane permeability and decrease production rates.
Can both outlet types be used simultaneously?
Yes, the dual outlet design for both RO and DI water allows concurrent use, though total system output capacity may be divided between outlets depending on demand.
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