The Ibex Sciences LS-50HD (50L) Vertical Pressure Steam Sterilizer (universally manufactured under standard Chinese industrial frameworks by laboratory engineering brands like Nanbei Instrument and West Tune) is a heavy-duty, top-loading floor-standing autoclave. [1, 2]
Featuring a 50-liter capacity chamber, it is widely utilized across regional biological, medical, and agricultural testing labs to sterilize surgical equipment, culture media, glassware, and hazardous laboratory waste. [1, 2, 3]
⚙️ Technical Specifications
The standard operational matrix for the Chinese LS-50HD platform includes:
- Chamber Volume: 50 Liters (Internal dimensions approx. ∅340mm × 550mm).
- Maximum Working Temperature: 134°C (Adjustable range from 105°C to 134°C).
- Maximum Working Pressure: 0.22 MPa (32 psi).
- Heating System Power: 3000 Watts (3.0 kW).
- Voltage Requirement: AC 220V / 50Hz standard single-phase grid.
- Timer Range: Digital settings from 0 to 99 minutes or up to 99 hours and 59 minutes.
- Temperature Uniformity: ≤ ±1°C throughout the chamber basin. [1, 2, 3]
💡 Key Design Features
- All-Stainless Steel Shell: The outer chassis, internal pressure vessel, and structural frame are built entirely from thick, corrosion-resistant 304 stainless steel. [1]
- Hand-Wheel Quick-Open Door: Features a heavy-duty mechanical hand-wheel locking lid. Rotating the hub forces structural lockpins outwards under the chamber rim for maximum pressure retention. [1, 3]
- Automated Cycle Management: Equipped with an LCD display module and touch-sensitive keys. Once configured, it manages the full cycle automatically: pre-heating ➔ cold air displacement ➔ core sterilization timer ➔ exhaust steam cooling ➔ end-alarm. [1, 2, 3]
- Self-Inflating Gasket Ring: Leverages internal pressure to naturally force the heavy silastic lid gasket tight, eliminating physical micro-steam leaks under peak load. []
- Tiered Configuration: Ships standard with two removable stainless steel wire mesh baskets, allowing you to separate clean media flasks from diagnostic discard loads. [1, 2]
🛡️ Safety & Cutout Protections
- Anti-Dry Burn Assembly: Features an active water-lack cut-off sensor. If fluid drops below the heating element coils, it severs electrical power instantly and sounds a warning alarm.
- Mechanical Pressure Interlock: The door cannot be turned or unlatched if internal chamber pressure exceeds a safe baseline threshold of 0.027 MPa.
- Over-Pressure Safety Valve: A spring-regulated mechanical safety relief valve acts as a physical fail-safe, cracking open to vent pressure if the vessel steps over safe parameters.
- Electrical Shunt: Features an onboard short-circuit and current overload circuit breaker array. [1, 3]





















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