DZF-1B Stainless Steel Vacuum Drying Oven

Overview

The DZF-1B Stainless Steel Vacuum Drying Oven is an entry-level, benchtop vacuum thermal processing system engineered for controlled dehydration, solvent removal, moisture-sensitive sample stabilization, and low-temperature heat treatment under reduced pressure. Unlike conventional convection ovens, this unit operates on the principle of lowering the ambient vapor pressure inside the chamber—thereby reducing the boiling point of volatile components and enabling drying at significantly lower temperatures. This minimizes thermal degradation of thermolabile compounds, prevents oxidation of air-sensitive materials, and eliminates surface hardening or crust formation common in atmospheric drying. Designed to meet foundational requirements in academic laboratories, QC/QA environments, and R&D pilot-scale workflows, the DZF-1B complies with core mechanical and electrical safety standards for Class II laboratory equipment (IEC 61010-1), and its stainless steel interior supports routine cleaning and long-term corrosion resistance in humid or mildly corrosive process environments.

Key Features

• 304 stainless steel interior chamber (300 × 300 × 275 mm) ensures chemical inertness, ease of decontamination, and resistance to oxidation during repeated thermal cycling.
• Intelligent microprocessor-based temperature controller with PID algorithm, ±1 °C accuracy across 50–250 °C range, and programmable ramp-soak profiles (single-segment).
• Tempered safety glass door with integrated anti-shatter film provides real-time visual monitoring without vacuum interruption; dual-point mechanical latches allow fine-tuning of door compression force for optimal gasket sealing.
• Monolithic molded silicone rubber door seal—compression-molded as a single piece—delivers uniform contact pressure and maintains stable vacuum integrity down to ≤10 Pa when paired with a compatible two-stage rotary vane pump (not included).
• Robust cold-rolled steel outer casing with powder-coated finish, front-mounted analog vacuum gauge (0–0.1 MPa scale), and rear-mounted vacuum port with standard KF-16 flange interface.

Sample Compatibility & Compliance

The DZF-1B accommodates a broad range of solid and semi-solid samples—including pharmaceutical powders, polymer precursors, ceramic green bodies, botanical extracts, battery electrode coatings, and lyophilized intermediates—without risk of oxidation, hydrolysis, or thermal decomposition. Its operating envelope aligns with ASTM D2243 (standard test method for moisture content in plastics via vacuum oven drying) and supports GLP-aligned documentation when integrated with external data loggers. While not certified to ISO 17025 or FDA 21 CFR Part 11 out-of-the-box, the instrument’s stable thermal performance, repeatable vacuum hold-down behavior (<5 % pressure rise over 30 min at 10 Pa), and traceable calibration points enable qualification per internal SOPs. All electrical components conform to CE marking directives (EMC & LVD), and the unit bears RoHS-compliant material declarations.

Software & Data Management

The DZF-1B operates as a standalone instrument with no embedded digital connectivity. Temperature setpoint, actual chamber temperature, and on/off status are displayed via a 3-digit LED screen. For regulated environments requiring audit trails, users may integrate optional third-party USB or RS485 data loggers (e.g., Omega OM-DAQPRO-5300 series) to record time-stamped temperature and vacuum pressure values. Calibration certificates for the built-in PT100 sensor and analog vacuum gauge can be provided upon request (NIST-traceable reference standards available). Firmware updates are not applicable; hardware-level calibration adjustments require authorized service personnel.

Applications

• Moisture determination in hygroscopic materials per USP & EP general chapters (e.g., Loss on Drying).
• Drying of oxygen- or moisture-sensitive catalysts prior to catalytic activity testing.
• Pre-baking of PCB substrates and thin-film deposition substrates to eliminate residual solvents.
• Thermal conditioning of lithium-ion battery cathode/anode slurries before roll-pressing.
• Stabilization of enzyme preparations and diagnostic reagent kits under inert vacuum conditions.
• Accelerated aging studies of packaging films and barrier laminates under controlled thermal-vacuum stress.

FAQ

What vacuum level can the DZF-1B achieve?

When connected to a standard two-stage rotary vane pump (e.g., 2 m³/h capacity), the chamber typically reaches ≤10 Pa (0.1 mbar) within 15–20 minutes. Ultimate vacuum depends on pump performance, ambient humidity, and sample outgassing rate.
Is the stainless steel chamber electropolished or passivated?

The interior uses commercially annealed 304 stainless steel sheet; electropolishing or citric acid passivation is not performed as standard but can be specified as a custom option.
Can the DZF-1B be used for sterilization?

No. This unit is not designed or validated for microbial kill efficacy. It lacks steam generation, pressure control, and cycle validation capabilities required for sterilization per ISO 17665 or EN 285.
Does the temperature controller support external probe input?

No. The system relies solely on the integrated PT100 sensor located near the chamber wall. External probe inputs are not supported in this model variant.
What maintenance is required for long-term reliability?

Monthly inspection of the silicone gasket for compression set or cracking; annual verification of temperature uniformity (±3 °C across chamber volume per ASTM E2207); biannual oil change for attached vacuum pump (if user-supplied).