Class B Autoclave - Benchtop Vacuum Steam Sterilizer - 18/23 L - 134°C

The Master Science Class B Autoclave is a benchtop vacuum steam sterilizer that removes air from the chamber with three pre-vacuum pulses before sterilization begins. This allows wrapped and unwrapped loads, porous materials and hollow instruments to be sterilized reliably.

Designed for dental, medical, veterinary, podiatry and tattoo clinics as well as laboratories, it offers BD, Helix and vacuum test programs, an adjustable drying phase and a built-in printer for cycle records.

Technical Specifications

Specifications of the Master Science Class B Autoclave:

• Brand: Master Science
• Model Number: MSSTB-B18BSWISS, MSSTB-B23BSWISS
• SKU: MSSTB-B18BSWISS, MSSTB-B23BSWISS
• Models and Volume: MSSTB-B18BSWISS 18 L; MSSTB-B23BSWISS 23 L
• Standard: European Class B
• Power: 2.2 kW
• Power Supply: AC 220/110 V, 50/60 Hz
• Design Pressure / Temperature: 0.25 MPa / 139 °C
• Working Pressure / Temperature: 0.22 MPa / 134 °C
• Temperature Accuracy: ±1 °C
• Sterilization Temperature: 116 to 134 °C
• Sterilization Time: 4 to 120 min
• Drying Time: 0 to 240 min
• Chamber Size: Ø250 × 360 mm (18 L); Ø250 × 450 mm (23 L)
• Air Removal: Three pre-vacuum pulses
• Test Programs: BD test, Helix test, vacuum leak test
• Steam: Built-in steam generator; open top water tank
• Display: LCD with touch keys
• Printer: Built-in
• Safety: Door lock; over-temperature, over-pressure, low-water and dry-burn protection
• Outer Dimensions: 475 × 600 × 445 mm (18 L); 475 × 680 × 445 mm (23 L)
• Gross Weight: 60 kg (18 L); 63 kg (23 L)

Key Benefits

• Sterilizes complex loads: vacuum air removal lets steam reach inside wrapped packs and hollow instruments.
• Verified cycles: the Master Science Class B Autoclave runs BD, Helix and vacuum tests.
• Dry instruments: an adjustable drying phase up to 240 minutes leaves loads ready for storage.
• Records on paper: the built-in printer documents each cycle.
• Plug-and-play setup: built-in steam generator and top-fill water tank need no plumbing.

For large-volume lab sterilization, see the Master Science vertical Class N autoclave.

Product Features

Sterilization

• Three pre-vacuum pulses
• 116 to 134 °C programs
• Adjustable drying

Testing and Records

• BD, Helix and vacuum test programs
• Standard test port
• Built-in printer

Safety

• Door safety lock
• Over-temperature and over-pressure protection
• Low-water and anti-dry-burn protection

Applications

The Master Science Class B Autoclave is used in:

• Dental clinics and laboratories
• Medical and surgical instrument reprocessing
• Veterinary practices
• Podiatry, beauty and tattoo studios
• Research and microbiology labs

Common Problems and How This Autoclave Helps

How the Master Science Class B Autoclave solves common sterilization problems:

• Hollow instruments not sterilized by gravity cycles: vacuum pulses remove trapped air.
• Wet packs after the cycle: the drying phase removes moisture.
• No proof of sterilization: tests and printed records provide documentation.
• Complex installation: built-in steam generator simplifies setup.
• Operator safety concerns: the interlocked door prevents opening under pressure.