Chu Ding Technology YN-ZD-5 / YN-ZD-10 / YN-ZD-20 Stainless Steel Electrically Heated Distillation Apparatus

Overview

The Chu Ding Technology YN-ZD Series Stainless Steel Electrically Heated Distillation Apparatus is a laboratory-grade primary distillation system engineered for continuous, reliable production of purified water from municipal tap water. Operating on the principle of thermal phase separation—where feed water is vaporized by immersed electric heating elements and subsequently condensed via circulating cooling water—the YN-ZD units deliver distilled water meeting general-purpose purity requirements for non-critical applications in clinical laboratories, pharmaceutical quality control, academic research, and educational settings. Designed in accordance with GB/T 14890–2021 (General Technical Requirements for Laboratory Distillers), these units employ a single-stage vertical distillation architecture with passive gravity-fed condensate collection. The apparatus does not incorporate deionization or ultraviolet sterilization stages; its output complies with specifications for Type III reagent water per ISO 3696:1987 and ASTM D1193–20, suitable for glassware rinsing, buffer preparation, media autoclaving, and routine instrument feed.

Key Features

• Robust 304 stainless steel construction throughout the evaporator chamber, condenser jacket, and collection vessel—resistant to chloride-induced pitting and long-term exposure to steam-saturated environments.
• High-efficiency immersion-type heating elements with ceramic insulation and over-temperature cutoff, ensuring stable thermal input and extended service life under continuous operation.
• Integrated dry-run protection system utilizing an imported bimetallic level sensor that detects absence of feed water within ≤2 seconds and interrupts power to the heater—preventing element burnout and eliminating risk of thermal runaway.
• Optimized condenser geometry with dual-path cooling water routing to maximize heat transfer surface area and maintain consistent condensation efficiency across rated output ranges.
• Hermetic sealing at all flanged joints and gasketed access ports minimizes vapor leakage, reduces ambient humidity buildup, and supports safe operation in shared laboratory spaces.
• Front-mounted analog gauges for real-time monitoring of feed water level and outlet temperature—no external calibration required and fully compatible with GLP documentation workflows.

Sample Compatibility & Compliance

The YN-ZD series accepts standard municipal tap water (conductivity ≤ 500 µS/cm, total hardness ≤ 300 mg/L CaCO₃ equivalent) as feedstock. It is not intended for seawater, high-TDS industrial effluent, or chemically pre-treated water containing volatile organics or ammonia. Units conform to GB 4706.1–2005 (Safety of Household and Similar Electrical Appliances) and GB/T 14890–2021. While not certified to ISO/IEC 17025 or FDA 21 CFR Part 11, their mechanical design supports audit-ready installation when paired with logbook-based operational records and scheduled maintenance logs per institutional SOPs.

Software & Data Management

This is a stand-alone electromechanical distillation system with no embedded microcontroller, digital interface, or data export capability. All operational parameters—including runtime, feed volume, and batch count—are recorded manually using facility-maintained log sheets. The absence of firmware eliminates cybersecurity concerns and ensures deterministic behavior across decades of use. For laboratories requiring traceability, optional analog chart recorders or third-party temperature/data loggers may be connected to the outlet thermowell (6 mm probe port, M12×1 thread).

Applications

• Routine preparation of distilled water for autoclave reservoirs, hematology analyzers, and clinical chemistry reagent dilution.
• Feed water sourcing for downstream purification systems (e.g., as pre-treatment for RO+DI units in central water plants).
• Teaching laboratories requiring visual demonstration of phase-change purification principles without complex automation.
• Pharmaceutical QC labs performing non-GMP stability testing where Type III water suffices per USP .
• Maintenance of low-contamination environments in histology and cytology workstations where organic-free water is unnecessary.

FAQ

What feed water quality is required for optimal performance?

Tap water with residual chlorine ≤ 1 mg/L, free of suspended solids, and hardness below 300 mg/L CaCO₃ is recommended. Pre-filtration through a 5-µm sediment filter is advised if particulate matter is observed.
Can the unit operate unattended overnight?

Yes—provided feed water supply is uninterrupted and cooling water flow remains stable. The dry-run cutoff provides essential fail-safe protection, but periodic visual inspection is still required per institutional safety policy.
Is validation support documentation available?

Factory test reports include pressure-hold verification (0.1 MPa, 30 min), material certification (304 SS mill test report), and electrical safety compliance summaries. IQ/OQ protocols are user-defined and must align with local regulatory expectations.
What maintenance intervals are recommended?

Descaling every 200 operating hours using 5% citric acid solution; annual inspection of gasket integrity and sensor responsiveness; biannual verification of grounding resistance (<10 Ω).
Does the unit meet WHO Good Manufacturing Practice (GMP) requirements for pharmaceutical water?

No—it produces Type III water only. GMP-compliant purified water systems require multi-barrier design (e.g., pretreatment + RO + EDI + UV + storage + distribution loop) validated per EU Annex 1 and USP .