Class B Autoclave - Benchtop Vacuum Steam Sterilizer - 18L 23L 45L - 134°C Built-in Printer

The Master Science Class B Benchtop Autoclave is a compact vacuum steam sterilizer for wrapped instruments, porous loads and hollow items that a simple gravity autoclave cannot reliably reach. Three pre-vacuum pulses remove air from the chamber before sterilization, and a built-in steam generator supplies saturated steam quickly.

It is available with 18 L, 23 L and 45 L chambers. A microcomputer controls each phase, the LED touch panel shows the cycle status, and a built-in printer records the result, so the Master Science Class B Benchtop Autoclave suits clinics, dental practices and laboratories that need documented sterilization.

Technical Specifications

Technical data of the Master Science Class B Benchtop Autoclave:

• Brand: Master Science
• Model Number: MSSTB-B18ZSWISS, MSSTB-B23ZSWISS, MSSTB-B45ZSWISS
• SKU: MSSTB-B18ZSWISS, MSSTB-B23ZSWISS, MSSTB-B45ZSWISS
• Brand: Master Science
• Models: MSSTB-B18ZSWISS (18 L), MSSTB-B23ZSWISS (23 L), MSSTB-B45ZSWISS (45 L)
• SKU: MSSTB-B18ZSWISS, MSSTB-B23ZSWISS, MSSTB-B45ZSWISS
• Chamber Size: 18 L: Ø250 × 360 mm; 23 L: Ø250 × 450 mm; 45 L: Ø320 × 615 mm
• Power: 18 L / 23 L: 2.2 kW; 45 L: 3.5 kW
• Voltage: AC 220/110 V, 50/60 Hz
• Design Pressure: 0.25 MPa
• Design Temperature: 139°C
• Rated Working Pressure: 0.22 MPa
• Rated Working Temperature: 134°C
• Sterilization Temperature: 116 to 134°C
• Sterilization Time: 4 to 120 min
• Drying Time: 0 to 240 min
• Outer Dimensions: 18 L / 23 L: 505 × 710 × 450 mm; 45 L: 660 × 850 × 570 mm

Key Benefits

• Reliable air removal: Three pre-vacuum pulses pull air out of wrapped packs and lumens before steam enters.
• Fast steam supply: The built-in steam generator delivers saturated steam quickly for shorter cycles.
• Verified performance: BD, Helix and vacuum test programmes let you check the sterilizer routinely.
• Dry loads: An adjustable drying phase of up to 240 minutes leaves instruments ready for storage.

For high-volume media and waste sterilization, see the Class N vertical autoclave 40L to 80L.

Product Features

Chamber and Door

• Stainless steel inner chamber with sealed lid
• Automatic door switch
• Safety door lock and interlock

Control and Monitoring

• Microcomputer control
• LED display with touch operation
• Built-in printer
• Standard test interface
• Buzzer and automatic stop at the end of the cycle

Sterilization Process

• Three pre-vacuum pulses
• Automatic cold air discharge
• Automatic steam exhaust after sterilization
• Built-in steam generator

Test Programmes

• Bowie-Dick (BD) test
• Helix test
• Vacuum leak test

Protection

• Over-temperature protection
• Over-pressure protection
• Low water level protection
• Anti-dry-burning protection

Applications

The Master Science Class B Benchtop Autoclave is used in:

• Dental clinics and hospital outpatient units
• Sterilization of wrapped and hollow surgical instruments
• Laboratory sterilization of porous and textile loads
• Beauty, tattoo and podiatry clinics
• Veterinary practices

Standard Accessories Included

• Autoclave main unit with built-in printer

Optional Accessories

• Printer paper for the built-in printer

Problems the Master Science Class B Benchtop Autoclave Solves

Gravity autoclaves can leave air pockets in packs and hollow instruments. The Master Science Class B Benchtop Autoclave is designed to overcome:

• Trapped air in wrapped loads: Pre-vacuum pulses remove air so steam reaches every surface.
• Wet packs after the cycle: The programmable drying phase removes moisture before unloading.
• No proof of sterilization: The built-in printer and test cycles provide records for each run.
• Low water or overheating risks: Low water, over-temperature and over-pressure protection stop the unit safely.