Class B Pre-Vacuum Autoclave - Benchtop Steam Sterilizer - 35L 50L - 105-134°C Micro Printer

The Master Science Class B Pre-Vacuum Autoclave is a horizontal benchtop sterilizer for hospitals, dental and eye clinics, pharmaceutical units and research labs. It handles surgical and dental instruments, glassware, culture media, fabric dressings and other items that tolerate saturated steam, with 35 L and 50 L chamber options.

A triple pulse pre-vacuum reaches -0.8 bar to pull air out of packs, porous loads and hollow instruments such as dental handpieces, and a post-vacuum stage dries the load to a residual moisture below 0.2%. Full computer control, an LCD status display and a built-in micro printer make the Master Science Class B Pre-Vacuum Autoclave simple to operate and document.

Technical Specifications

Technical data of the Master Science Class B Pre-Vacuum Autoclave:

• Brand: Master Science
• Model Number: MSSTB-APV35DVSWISS, MSSTB-APV50DVSWISS
• SKU: MSSTB-APV35DVSWISS, MSSTB-APV50DVSWISS
• Brand: Master Science
• Models: MSSTB-APV35DVSWISS (35 L), MSSTB-APV50DVSWISS (50 L)
• SKU: MSSTB-APV35DVSWISS, MSSTB-APV50DVSWISS
• Chamber Size: 35 L: Ø300 × 500 mm; 50 L: Ø340 × 550 mm
• Design Pressure: 0.3 MPa
• Design Temperature: 150°C
• Max. Working Pressure: 0.25 MPa
• Max. Working Temperature: 138°C
• Temperature Range: 105 to 134°C
• Timer Range: 0 to 99 min
• Temperature Uniformity: ≤ ±1°C
• Vacuum Level: Down to -0.8 bar
• Residual Moisture After Drying: < 0.2%
• Power Supply: AC 220 V, 50 Hz, 2.7 kW
• External Dimensions: 35 L: 550 × 850 × 500 mm; 50 L: 600 × 850 × 560 mm

Key Benefits

• Steam reaches every surface: Pulsed vacuum removes trapped air from wrapped, porous and hollow loads.
• Dry instruments: Post-vacuum drying leaves residual moisture under 0.2%, ready for storage.
• Stable temperature: Chamber temperature uniformity of ±1°C supports consistent results.
• Traceable cycles: A built-in micro printer records the data of every sterilization run.

For smaller practices, compare our Class B benchtop autoclave 18L to 45L.

Product Features

Vacuum and Drying

• Three-pulse pre-vacuum down to -0.8 bar
• Post-vacuum drying function
• Independent fast steam generator

Control

• Full computer control with modular, simple interface
• LCD display and touch buttons
• Built-in micro printer

Testing

• Bowie-Dick test for steam penetration
• Vacuum test for checking vacuum performance

Safety

• Safety valve
• Manual safety door lock and pressure locking system
• Programme starts only with the door sealed; door stays locked while running
• Fault self-check
• Over-temperature and over-pressure protection

Applications

The Master Science Class B Pre-Vacuum Autoclave is suited to:

• Surgical, dental and ophthalmic instrument sterilization
• Hollow instruments such as dental handpieces
• Glassware and culture media in laboratories
• Fabric dressings and porous packs
• Pharmaceutical and food research units

Standard Accessories Included

• Autoclave main unit with built-in micro printer

Optional Accessories

• Printer paper for the micro printer

Problems the Master Science Class B Pre-Vacuum Autoclave Solves

Hollow and wrapped items are hard to sterilize with gravity steam alone. The Master Science Class B Pre-Vacuum Autoclave addresses:

• Air trapped in lumens: Deep pulsed vacuum lets steam fully penetrate hollow instruments.
• Damp packs: Post-vacuum drying brings residual moisture below 0.2%.
• Accidental door opening: The door locks once a programme starts and cannot be opened until it is safe.
• Missing sterilization records: The micro printer documents every cycle.