Yarong SZ-97A Quartz-Tube Heated Laboratory Distillation Apparatus

Overview

The Yarong SZ-97A is a benchtop quartz-tube heated laboratory distillation apparatus engineered for the reliable production of high-purity water in research, quality control, and analytical laboratories. It operates on classical thermal distillation principles: feed water is vaporized under controlled heating, then condensed and collected—effectively separating non-volatile impurities, ions, organic contaminants, and particulates. Unlike metal-heated systems, the SZ-97A employs a sealed quartz tube heating element embedded within a borosilicate glass flask housing, eliminating direct contact between process water and metallic surfaces. This design mitigates leaching risks and ensures consistent compliance with ASTM D1193 Type II and ISO 3696 Grade 2 water specifications for general laboratory use. The apparatus integrates a closed-loop circulating condensation system, enabling stable thermal management and reproducible output across extended operation cycles.

Key Features

• Quartz tube heating element: Chemically inert, high-temperature resistant (up to 1000 °C), and optically transparent—ensures uniform heat distribution without metallic contamination.
• Non-metallic wetted path: Entire steam generation and condensation pathway—comprising borosilicate glass flasks, quartz heater enclosure, and PTFE-sealed joints—prevents ion release and adsorption of organics.
• Intelligent endpoint control: Dual-sensor logic combines a calibrated temperature controller (±0.5 °C accuracy) with a reed-switch water level sensor to automatically interrupt power when the distillate reservoir reaches preset volume or when boiling ceases due to low feed level.
• Integrated relay-based safety circuit: Provides over-temperature cutoff, dry-run protection, and fail-safe power disconnection in accordance with IEC 61010-1 safety requirements for laboratory electrical equipment.
• Energy-optimized thermal architecture: Reflective insulation surrounding the quartz heater reduces radiant heat loss by >35%, contributing to stable 4.5 kW input efficiency and reduced ambient heat load.

Sample Compatibility & Compliance

The SZ-97A accepts tap water, deionized water, or pre-filtered municipal sources as feedstock. It is not intended for organic solvent distillation or corrosive feed solutions (e.g., strong acids/bases). Its output meets the conductivity limit (<1.0 μS/cm at 25 °C), silica content (<0.02 mg/L), and total oxidizable carbon (TOC) thresholds required for ASTM D1193 Type II water. While not certified to ISO/IEC 17025, the apparatus supports GLP-compliant documentation when operated with logbook entries, calibration records for the temperature controller, and periodic verification of distillate resistivity. No CE or UL marking is affixed; users are advised to verify local regulatory alignment prior to installation.

Software & Data Management

The SZ-97A is a manually supervised, analog-controlled instrument with no embedded microprocessor or digital interface. All operational parameters—including setpoint temperature, runtime, and batch volume—are recorded externally via lab notebook or LIMS-integrated manual entry. The temperature controller features a calibrated analog dial with visible scale markings traceable to NIST-traceable reference standards upon user-provided calibration. For audit readiness, laboratories may implement standardized SOPs covering daily startup checks, weekly cleaning protocols (using 5% nitric acid rinse), and biannual verification of relay response time and sensor hysteresis.

Applications

• Preparation of reagent-grade water for spectrophotometry (UV-Vis, AAS), chromatography mobile phase preparation, and buffer dilution in molecular biology workflows.
• Feed water supply for ultrapure water systems requiring pre-distilled input to extend downstream cartridge life.
• Teaching laboratories demonstrating phase-change separation principles, heat transfer dynamics, and purity validation techniques (e.g., conductivity titration, TOC measurement).
• QC environments where ISO 17025-accredited testing requires documented water purity history—especially in pharmaceutical stability studies and extractables/leachables analysis.

FAQ

What feed water quality is recommended for optimal performance and longevity?
Tap water with total dissolved solids (TDS) < 500 ppm and hardness < 150 ppm CaCO₃ equivalent is preferred. Pre-filtration through a 5-µm sediment filter and activated carbon stage is strongly advised to reduce scaling and chlorine-induced quartz degradation.
Can the SZ-97A be integrated into a continuous-feed water purification line?
No—it is designed for batch operation only. Feed reservoir must be manually refilled; no auto-fill or level-sensing inlet valve is included.
Is routine maintenance required beyond cleaning?
Yes. Quarterly inspection of quartz tube integrity (for microfractures), annual replacement of reed sensor gaskets, and biannual recalibration of the temperature controller against a certified RTD probe are recommended per manufacturer guidelines.
Does the apparatus comply with FDA 21 CFR Part 11 for electronic records?
Not applicable—the SZ-97A contains no electronic data storage, audit trail capability, or user authentication features. All operational data must be transcribed manually and retained per institutional record retention policy.