SZ-93 Automatic Dual-Stage Stainless Steel Water Distiller by Yarong (Shanghai)

Overview

The SZ-93 Automatic Dual-Stage Stainless Steel Water Distiller is a benchtop laboratory purification system engineered for continuous, high-purity deionized water production via sequential vaporization and condensation. It operates on the fundamental principle of fractional distillation—where feed water is heated to boiling in a primary stainless steel evaporation chamber, generating steam that passes through a secondary purification stage (a second-stage evaporator-condenser loop) to remove volatile impurities, dissolved gases, and trace organics that may carry over in single-stage systems. This dual-stage architecture significantly enhances removal efficiency for low-boiling contaminants such as silica, ammonia, carbon dioxide, and residual solvents—critical for applications demanding Type I ultrapure water specifications per ISO 3696:1987 and ASTM D1193-20. The unit features fully automatic operation with integrated level sensors, thermal cut-off protection, and timed distillation cycles, minimizing manual intervention while maintaining consistent output quality across extended runs.

Key Features

• Two-stage distillation path constructed entirely from electropolished 316L stainless steel chambers and condensing coils—resistant to corrosion, leaching, and scaling under repeated thermal cycling
• Programmable auto-start/stop function with adjustable distillation duration (1–24 hours) and real-time status LED indicators
• Integrated low-water cutoff and overtemperature safety interlocks compliant with IEC 61010-1:2010 for laboratory electrical equipment safety
• Front-panel digital display showing operating status, elapsed time, and chamber temperature (range: ambient to 120 °C)
• Modular design enabling rapid cleaning and maintenance; removable collection flask with 5 L capacity and overflow prevention mechanism
• No external cooling water required—air-cooled condenser with optimized fin geometry ensures stable condensation efficiency at ambient temperatures up to 35 °C

Sample Compatibility & Compliance

The SZ-93 accepts tap water, deionized water, or pre-treated municipal feed sources (with total dissolved solids ≤ 500 ppm recommended). It is not intended for direct use with seawater, highly saline brines, or solvent-laden process streams. Output water meets or exceeds ASTM Type II specifications (resistivity ≥ 1 MΩ·cm at 25 °C, TOC ≤ 50 ppb) after 4–6 hours of conditioning run. The distiller conforms to GB/T 11463-2021 (Chinese national standard for laboratory distillers), and its mechanical construction adheres to ISO 9001-certified manufacturing protocols. Documentation includes factory calibration certificate, material traceability records for wetted parts, and CE-marked electrical components (EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU).

Software & Data Management

The SZ-93 is a standalone hardware system without embedded microprocessor-based data logging or network connectivity. All operational parameters are controlled manually via front-panel push-button interface. However, it supports GLP-compliant recordkeeping: users may log batch numbers, start/stop timestamps, operator ID, and final yield volume in laboratory notebooks or LIMS-integrated spreadsheets. Optional analog output (0–5 V DC) is available upon request for integration with building management systems or centralized monitoring dashboards—subject to custom configuration and third-party validation per FDA 21 CFR Part 11 requirements if used in regulated environments.

Applications

• Preparation of reagent-grade water for analytical chemistry workflows including HPLC mobile phase preparation, AAS standards dilution, and ICP-MS blank matrix formulation
• Supplying purified water for autoclave feed, glassware rinsing, and cell culture media preparation where endotoxin-free water is not required but low ion content is essential
• Supporting teaching laboratories in undergraduate chemistry and biology curricula for demonstrations of phase change thermodynamics and separation science principles
• Backup purification source in facilities where central ultrapure water systems undergo scheduled maintenance or experience temporary outage
• Field-deployable water purification in mobile labs or remote research stations lacking access to continuous deionization infrastructure

FAQ

What is the typical daily output capacity of the SZ-93?
Under continuous 24-hour operation with optimal feed water quality and ambient conditions, the SZ-93 delivers approximately 8–10 liters of distilled water per day.
Can the SZ-93 be connected to a permanent water supply line?
Yes—optional inlet solenoid valve and float-controlled reservoir kits are available for automated feed replenishment; installation must comply with local plumbing codes and include a pressure regulator (max 0.3 MPa input).

Is routine descaling required, and what cleaning agents are approved?
Descaling every 2–3 months is recommended depending on feed water hardness; only citric acid-based descalers (≤5% w/v, pH 2.0–3.5) or manufacturer-supplied stainless steel-compatible formulations should be used.

Does the unit meet USP Purified Water monograph requirements?
While the SZ-93 produces water suitable for many USP Purified Water applications, formal compliance requires system qualification (IQ/OQ/PQ), ongoing conductivity and microbial testing, and documented environmental controls per USP and .