ZLSC-5/ZLSC-10/ZLSC-20 Stainless Steel Electric Double-Distillation Water Purifier
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Regional Origin | Domestic (China) |
| Model | ZLSC-5 / ZLSC-10 / ZLSC-20 |
| Output Capacity | 5 L/h / 10 L/h / 20 L/h |
| Power Supply | 380 V AC |
| Power Consumption | 9 kW / 15 kW / 24 kW |
| Net Weight | 14 kg / 14 kg / 15 kg |
| Dimensions (W×D×H) | 770×380×860 mm / 770×380×860 mm / 860×380×860 mm |
Overview
The ZLSC-5, ZLSC-10, and ZLSC-20 Stainless Steel Electric Double-Distillation Water Purifiers are laboratory-grade water purification systems engineered for the reliable production of Type I ultrapure water via two-stage thermal distillation. These units operate on the principle of sequential vaporization and condensation—first distilling raw feed water (typically tap or deionized water) to remove non-volatile impurities, then subjecting the primary distillate to a second distillation cycle to eliminate volatile organics, dissolved gases, and trace ionic contaminants. This dual-stage process yields water with resistivity ≥10 MΩ·cm at 25 °C, total organic carbon (TOC) < 10 ppb, and bacterial content < 1 CFU/mL—meeting or exceeding ASTM D1193-20 Type I specifications and supporting critical applications in analytical chemistry, pharmaceutical QC, cell culture media preparation, and trace-metal analysis.
Key Features
- Fully constructed from ASTM A240 304 stainless steel—electropolished interior surfaces minimize leaching and ensure long-term corrosion resistance against aggressive condensates and cleaning agents.
- Integrated dry-run protection system with dual-level float sensors and thermal cutoff relays prevents heater element damage during low-water conditions.
- Front-mounted control panel with heat-resistant safety shield and tactile rotary flow regulators enables precise adjustment of distillate flow rate and condenser cooling balance.
- Internal分流-style (split-stream) vapor distribution design ensures uniform heating across the evaporator chamber and enhances separation efficiency between volatile and non-volatile fractions.
- Bidirectional adjustable flow valve allows real-time optimization of distillate collection rate versus energy consumption—critical for balancing throughput and purity in regulated environments.
- Modular heater assembly with ceramic-insulated sheathed elements delivers stable thermal output and facilitates rapid replacement without system disassembly.
Sample Compatibility & Compliance
These purifiers accept standard municipal tap water, softened water, or pre-treated deionized water as feedstock. Feed water hardness ≤ 200 ppm CaCO₃ is recommended to minimize scale formation; optional inline sediment and activated carbon pre-filters are available for high-turbidity or chlorinated supplies. The ZLSC series complies with GB/T 11417–2012 (Chinese National Standard for Laboratory Distillation Apparatus), and its construction and operational safeguards align with ISO/IEC 17025:2017 requirements for calibration and testing laboratories. Units support GLP-compliant operation when paired with external temperature logging and batch record documentation protocols.
Software & Data Management
The ZLSC series operates as a standalone analog-controlled system without embedded microprocessors or digital interfaces. All operational parameters—including power status, heating phase indication, and low-water alarm—are conveyed via illuminated LED indicators and mechanical gauges. For laboratories requiring audit-ready records, optional external data loggers (e.g., Omega OM-DAQPRO-5300) may be connected to monitor inlet/outlet temperatures, operating voltage, and cumulative runtime. While not natively 21 CFR Part 11 compliant, the system supports integration into validated workflows when combined with validated SOPs, manual logbooks, and periodic calibration certificates traceable to NIM (National Institute of Metrology, China).
Applications
- Preparation of reagent-grade water for HPLC mobile phase preparation and GC solvent blanks.
- Feed water source for ultra-low particulate cleanroom humidification systems.
- Final rinse water in semiconductor wafer cleaning lines where chloride and silica residuals must remain below detection limits.
- Production of pyrogen-free water for endotoxin testing (USP ) when coupled with sterile filtration and validated storage protocols.
- Supporting ISO 15189-accredited clinical laboratories requiring traceable, consistent water quality for immunoassay and PCR reagent formulation.
FAQ
What feed water quality is required to achieve optimal performance and service life?
Tap water with total dissolved solids (TDS) < 500 ppm and free chlorine < 2 ppm is acceptable; however, pretreatment with activated carbon and sediment filtration is strongly advised to extend heater life and reduce maintenance frequency.
Can the unit be operated continuously for 24/7 production?
Yes—the ZLSC series is rated for continuous duty under ambient temperatures of 10–35 °C and relative humidity ≤ 80% non-condensing. Scheduled shutdowns every 72 hours are recommended for descaling and visual inspection of condenser tubing.
Is validation documentation provided with the system?
Factory test reports—including pressure integrity verification, electrical safety certification (GB 4793.1), and material traceability for all wetted parts—are supplied. IQ/OQ protocol templates compatible with GMP environments can be provided upon request.
How is maintenance access designed for routine servicing?
Front-access panels allow full exposure of the evaporator chamber, condenser coil, and heater modules without disassembling the structural frame—reducing mean time to repair (MTTR) to under 45 minutes for standard descaling procedures.
