LDZX-50KAS 50L Fully Stainless Steel Vertical Autoclave with Automatic Control

Overview

The LDZX-50KAS is a fully stainless steel, vertically oriented, automatic control steam autoclave engineered for reliable saturated steam sterilization under elevated pressure and temperature conditions. It operates on the fundamental principle of moist heat sterilization—utilizing pressurized saturated steam at temperatures up to 128 °C and pressures up to 0.165 MPa—to achieve microbial inactivation across a broad spectrum of vegetative bacteria, spores, viruses, and fungi. This unit conforms to the physical sterilization requirements specified in ISO 17665-1:2017 and complies with China’s national standard GB 8599–2008 for large-capacity gravity-displacement steam sterilizers. Its vertical configuration optimizes floor space utilization while enabling efficient chamber loading for laboratory-scale sterilization cycles in academic, clinical, pharmaceutical, and biotechnology environments.

Key Features

• Full 304 stainless steel construction—chamber, door, jacket, and exterior housing—for long-term corrosion resistance, ease of cleaning, and compliance with hygienic design principles.
• Lever-actuated quick-opening door with self-sealing gasket technology ensures rapid access and leak-tight integrity during operation.
• Integrated overpressure safety relief system calibrated to activate between 0.145–0.165 MPa, providing passive protection against excessive chamber pressure.
• Low-water level cut-off sensor prevents dry-heating and thermal damage to heating elements during cycle execution.
• Interlocked door mechanism physically inhibits opening until chamber pressure drops to atmospheric levels, satisfying basic mechanical safety requirements per ISO 13485 and IEC 61010-1.
• Dual-scale Class II pressure gauge enables simultaneous reading in MPa and psi, supporting both metric and legacy operational workflows.
• LED status indicators provide real-time visual feedback for power-on, heating, sterilization, exhaust, and standby phases.
• Gravity-displacement air removal method ensures consistent steam penetration into porous loads such as wrapped instruments, cotton gauze, and culture media bottles.

Sample Compatibility & Compliance

The LDZX-50KAS accommodates a wide range of sterilizable items including surgical instruments, glassware (e.g., flasks, pipettes), stainless steel tools, textile packs, liquid media (up to 5 L per container), agar plates, and non-porous labware. Load configurations must adhere to validated packing guidelines—e.g., avoiding overloading, ensuring steam-permeable wrapping, and maintaining adequate spacing between items. While not certified for terminal sterilization under FDA 21 CFR Part 11 or EU Annex 1 GMP, the unit supports GLP-aligned documentation practices when paired with external cycle loggers. It meets essential performance criteria outlined in EN 285:2015 (Steam Sterilizers – Large Sterilizers) for Class B applications when operated within defined process parameters and maintained per manufacturer-recommended service intervals.

Software & Data Management

The LDZX-50KAS operates via an electromechanical control panel without embedded microprocessor-based programming or digital data logging. Cycle parameters—including time, temperature, and pressure—are monitored manually using analog gauges and timed with external stopwatches. For laboratories requiring audit-ready records, integration with third-party USB or RS-485 data loggers is feasible via optional analog output ports (available upon request). Users are advised to maintain hard-copy sterilization logs that include date, operator ID, load description, cycle duration, peak temperature/pressure readings, and post-cycle visual inspection outcomes—consistent with ISO 13485 clause 7.5.10 and WHO TRS No. 992 Annex 6 requirements for sterilization process validation.

Applications

This autoclave serves routine sterilization needs across multiple domains: microbiology labs preparing nutrient agar, broth, and selective media; hospital central sterile supply departments (CSSD) reprocessing reusable instruments; university teaching labs conducting basic bacteriology experiments; food safety testing facilities validating media sterility; and biotech startups performing small-batch equipment decontamination prior to aseptic processing. It is not intended for use with heat-labile plastics, oils, powders, or sealed containers unless validated per ISO 17665 Annex C protocols.

FAQ

What is the maximum recommended fill volume for liquid loads in the LDZX-50KAS chamber?
For safe sterilization of liquids (e.g., culture media), total volume should not exceed 70% of chamber capacity—i.e., ≤35 L—and individual containers must remain uncapped or vented during the cycle to prevent boil-over or breakage.
Does this autoclave support vacuum-assisted air removal?
No. The LDZX-50KAS employs gravity displacement only and is not equipped with a vacuum pump or pulsing cycle capability. It is classified as a Class N (non-vacuum) sterilizer per EN 13060.
Can it be used for sterilizing wrapped surgical kits?
Yes—provided packaging materials are steam-permeable (e.g., medical-grade paper-plastic pouches or linen wraps) and load density remains below 80% of chamber volume to ensure adequate steam penetration.
Is calibration certification included with purchase?
Factory calibration certificates for pressure and temperature sensors are available upon request at additional cost; annual recalibration by an accredited metrology lab is recommended for quality-critical applications.
What maintenance schedule is recommended?
Daily: inspect door gasket for cracks or deformation; weekly: clean chamber drain filter and verify water level; quarterly: test pressure relief valve function; annually: full preventive maintenance including heating element resistance check and control board diagnostics.