Shanghai Huanyu SHZ32-100 Full Stainless Steel Tower-Type Double Distillation Water Still (100 L/h)

Overview

The Shanghai Huanyu SHZ32-100 is a full stainless steel tower-type double distillation water still engineered for continuous, high-purity water production in regulated laboratory and pharmaceutical environments. It operates on the principle of sequential vaporization and condensation—first-stage distillation removes non-volatile impurities, dissolved salts, and particulates; second-stage distillation further eliminates volatile organics, pyrogens, and residual gases via thermal separation under controlled steam flow dynamics. The unit integrates a helical electric heating system to ensure uniform boiler temperature distribution and minimize localized scaling, while its vertical inline water-cooled condenser provides stable, high-efficiency phase transition with minimal carryover. Designed for uninterrupted operation in QC labs, formulation suites, and sterile manufacturing support areas, the SHZ32-100 delivers distilled water meeting the purity specifications outlined in the Chinese Pharmacopoeia (2000 Edition), including limits for conductivity (<5.1 µS/cm at 25 °C), total organic carbon (TOC), nitrate, and heavy metals.

Key Features

• Full-body construction from ASTM A240 304 stainless steel—resistant to chloride-induced pitting, acidic/alkaline reagents, and repeated thermal cycling
• Helical (spiral) heating element design ensures even heat transfer across the evaporation chamber, reducing hot-spot formation and extending service life
• Vertical inline water-cooled condenser with optimized internal surface area and laminar flow path minimizes droplet entrainment and improves condensate purity
• Integrated boiler steam extraction pathway with gravity-assisted vapor lift and vapor-phase separation zone enhances separation efficiency between first and second distillation stages
• Front-accessible maintenance layout—including removable sight glass, drain valves, and heater inspection ports—reduces downtime during routine servicing
• Stable output capacity of 100 liters per hour under standard feedwater conditions (conductivity ≤500 µS/cm, inlet temp. 10–25 °C)

Sample Compatibility & Compliance

The SHZ32-100 accepts municipal tap water, deionized water, or softened feed water as input. It is not intended for direct use with seawater, high-hardness well water (>300 ppm CaCO₃), or water containing >1 ppm free chlorine without pretreatment. Output water complies with Chinese Pharmacopoeia (2000 Edition) requirements for “Water for Injection” (WFI) in non-sterile applications, including microbial limits (<10 CFU/100 mL), endotoxin levels (<0.25 EU/mL), and absence of detectable nitrates and heavy metals by atomic absorption spectroscopy. While not certified to ISO 13485 or FDA 21 CFR Part 11 out-of-the-box, the unit’s mechanical design supports integration into GLP- and GMP-aligned validation protocols—including IQ/OQ/PQ documentation, material traceability (mill test reports available upon request), and calibration of temperature sensors and flow meters.

Software & Data Management

The SHZ32-100 is a standalone electromechanical system with no embedded microprocessor or digital interface. Operational parameters—including boiler temperature, cooling water inlet temperature, and output flow rate—are monitored via analog gauges and calibrated bimetallic thermometers. For laboratories requiring audit-ready records, optional third-party data loggers (e.g., Omega OM-DAQPRO-5300 or Testo 176 T4) may be connected to PT100 sensor outputs (available as field-installable upgrade). All critical components are labeled with serial-numbered nameplates traceable to manufacturing batch, supporting equipment history tracking per ISO/IEC 17025 Clause 6.4.2.

Applications

• Preparation of Water for Injection (WFI) in pharmaceutical R&D and pilot-scale manufacturing
• Feedstock purification for HPLC mobile phase preparation and ICP-MS standard dilution
• Reagent-grade water supply for clinical chemistry analyzers and ELISA plate washers
• Process water for glassware rinsing in microbiology and cell culture laboratories
• Calibration reference water in metrology labs performing conductivity and TOC instrument verification
• Support utility in GLP-compliant toxicology and pharmacokinetic studies requiring documented water purity

FAQ

What feed water quality is recommended for optimal performance?

Tap water with hardness <150 ppm CaCO₃ and free chlorine <0.5 ppm is preferred. Pre-filtration through activated carbon and softening is strongly advised for municipal supplies with higher chlorine or hardness.
Does the unit include automatic shut-off or dry-run protection?

Yes—the SHZ32-100 incorporates a dual-level float switch system that interrupts power to the heating element if boiler water level falls below safe operating threshold.
Can this still be validated per USP or EP 2.2.42?

While not pre-validated, its construction, material certifications, and process repeatability make it suitable for qualification under USP “Water for Pharmaceutical Purposes” when paired with documented OQ protocols and periodic TOC/conductivity verification.
Is cooling water recirculation possible?

Yes—closed-loop chillers with ≥10 L/min flow capacity and 10–25 °C outlet temperature can replace municipal cooling water, provided pressure remains within 0.1–0.3 MPa range.
What maintenance intervals are recommended?

Daily visual inspection of water level and condensate clarity; monthly descaling using 5% citric acid solution; annual inspection of gasket integrity and heater resistance (±5% of nominal value).