CZGY SYZ-A Quartz Sub-Boiling Distillation Apparatus

Overview

The CZGY SYZ-A Quartz Sub-Boiling Distillation Apparatus is a laboratory-grade, fully enclosed purification system engineered for the continuous production of ultra-high-purity water (UHPW) required in demanding analytical applications. Unlike conventional boiling distillation systems—where turbulent vapor generation leads to mechanical entrainment of liquid droplets—the SYZ-A operates on the principle of sub-boiling evaporation: thermal radiation gently heats the feedwater surface to a temperature deliberately maintained below its atmospheric boiling point (typically 95–98 °C), enabling controlled, laminar-phase vaporization. This eliminates aerosol carryover, suppresses volatile impurity transfer, and prevents contact between the sample and any non-quartz surfaces. The entire distillation path—including evaporator, condenser, and collection vessel—is fabricated from high-purity fused quartz (SiO₂ ≥ 99.995%), ensuring zero leaching of alkali metals, transition metals, or borosilicate contaminants. As validated by the Nanjing Institute of Metrology, output water meets stringent specifications for trace-metal-sensitive techniques including graphite furnace atomic absorption spectroscopy (GFAAS), inductively coupled plasma mass spectrometry (ICP-MS), ion chromatography (IC), and high-performance liquid chromatography (HPLC) mobile phase preparation.

Key Features

• Fully quartz construction (evaporator, condenser, vapor duct, and receiver)—no metal gaskets, PTFE seals, or borosilicate glass interfaces
• Sub-boiling thermal control architecture: precise radiant heating ensures stable surface temperature <100 °C, eliminating bubble nucleation and droplet entrainment
• Integrated cooling jacket with adjustable tap-water flow rate for consistent condensation efficiency and thermal stability
• Compact benchtop footprint (360 × 240 × 420 mm) with ergonomic front-access drain valve and sealed collection port
• No moving parts or electrical components in contact with process water—maximizes long-term reliability and minimizes maintenance
• Compliant with ISO/IEC 17025 calibration traceability requirements when operated within defined ambient and inlet water specifications

Sample Compatibility & Compliance

The SYZ-A accepts deionized or reverse-osmosis pretreated feed water (conductivity ≤ 5 µS/cm) and delivers ultrapure water with total metal ion content below detection limits of modern trace analysis instrumentation. Certified test reports confirm concentrations (µg/L) of Ca (≤0.25), Mg (≤0.1), Mn (≤0.1), Fe (≤0.2), Cu (≤0.02), Zn (≤0.05), Al (≤0.15), Co (≤0.2), Ni (≤0.12), Cr (≤0.15), Cd (≤0.01), Pb (≤0.01), and Na (≤0.1). These values satisfy ASTM D1193 Type I water specifications and support compliance with USP , CLSI C3-A4, and ISO 3696 Grade 1 standards. The apparatus is routinely employed in GLP-regulated laboratories for reagent preparation in clinical biochemistry, environmental trace metal analysis, and semiconductor wafer cleaning validation protocols.

Software & Data Management

The SYZ-A is a standalone analog instrument with no embedded microprocessor or digital interface. Operational parameters—including input water temperature, cooling water flow rate, and ambient humidity—are manually monitored and logged per institutional SOPs. For audit readiness in regulated environments, users integrate the unit into facility-wide monitoring systems via external temperature and flow sensors connected to validated data loggers compliant with FDA 21 CFR Part 11 (electronic records and signatures). Calibration verification is performed annually using certified reference materials (CRMs) traceable to NIST SRM 1643e (Ultra-Pure Water Standard), with full documentation retained for GMP/GLP inspection.

Applications

• Preparation of blank matrix solutions for ICP-MS multi-element calibration curves
• Mobile phase and standard diluent preparation for HPLC-ICP-MS coupling
• Electrolyte solution formulation for ion-selective electrode (ISE) calibration
• Reagent-grade water for flame atomic absorption spectroscopy (FAAS) and flame photometry
• Final rinse water in cleanroom-compatible analytical workflows (Class 100/ISO 5 environments)
• Production of solvent blanks for polarographic and voltammetric electrochemical methods

FAQ

What distinguishes sub-boiling distillation from conventional boiling distillation?
Sub-boiling operation avoids nucleate boiling entirely—vapor forms only via surface evaporation at temperatures below 100 °C, preventing mechanical carryover of particulates and dissolved ions that occur during vigorous boiling.
Can the SYZ-A be used with tap water as feed?
No. Feed water must be pre-purified to ≤5 µS/cm conductivity (e.g., via RO or DI) to prevent scaling, quartz etching, and premature failure of the evaporator surface.
Is the unit suitable for producing water for cell culture media preparation?
While microbiologically sterile output is not guaranteed without post-distillation filtration, the SYZ-A’s low endotoxin and metal content make it appropriate for preparing base solvents in aseptic compounding workflows when paired with 0.22 µm sterilizing-grade filtration.
How often does the quartz evaporator require cleaning?
Under proper feed water quality, cleaning is typically required every 6–12 months using dilute hydrofluoric acid (HF) solution under fume hood supervision—strict adherence to quartz etching protocols is mandatory.
Does CZGY provide installation qualification (IQ) and operational qualification (OQ) documentation?
Yes—custom IQ/OQ protocols aligned with ISO 9001 and GAMP 5 principles are available upon request for integration into pharmaceutical or clinical laboratory validation programs.