Memmert Steriliser S SF450

Memmert Steriliser SF450

High-Capacity Hot Air Sterilisation for Reliable Instrument Processing

The Memmert SF450 is a large-volume, precision-controlled hot air steriliser developed specifically for the safe and thorough sterilisation of laboratory and medical instruments. With its high chamber volume, advanced PID control, and medical device certification (CE 0197), the SF450 ensures consistent, validated sterilisation performance compliant with international medical standards.

Features

• Certified as a medical device according to CE 0197

• SingleDISPLAY digital PID microprocessor controller with high-resolution TFT colour display

• SetpointWAIT function delays process start until the exact target temperature is reached at all measurement points

• 1 Pt100 temperature sensor (DIN Class A) with 4-wire circuit for high-accuracy monitoring

• Programmable timer with adjustable range from 1 minute to 99 days

• Three-point calibration for precision tuning

• Natural convection airflow supported by electronically controlled air flap

• Adjustable parameters include: temperature (°C/°F), fan speed, air flap position, programme time, time zone, daylight saving time

• Programme memory retained during power failure

• Compatible with AtmoCONTROL software for programming and logging via Ethernet (USB stick version available)

• Fully insulated, lockable stainless steel double doors with 2-point compression locking

• Durable construction with stainless steel interior and rear zinc-plated steel housing

• Mounted on lockable castors for convenient mobility

• Visual and acoustic alarms with self-diagnostic error reporting

• Mechanical and electronic temperature limiters for safety compliance

Applications

• Sterilisation of surgical and laboratory instruments, glassware, containers, and other heat-resistant tools

• Ideal for medical institutions, laboratories, pharmaceutical production, and research facilities requiring precise thermal sterilisation

• Suitable for high-throughput environments with heavy-duty load capacities

Specifications

• Temperature setting range: +20 °C to +250 °C

• Setting accuracy:

  • Up to 99.9 °C: 0.1 °C

  • From 100 °C: 0.5 °C

• Working temperature range: Minimum 10 °C above ambient to +250 °C

• Temperature sensor: 1 Pt100 DIN class A, 4-wire circuit

• Control technology:

  • SingleDISPLAY digital PID microprocessor

  • Countdown timer: 1 minute to 99 days

  • SetpointWAIT for reliable cycle control

  • Calibration at three selectable temperature points

  • Adjustable fan speed, air flap, time zone, summer/winter time

• Ventilation:

  • Forced air circulation via quiet turbine, adjustable in 10% increments

  • Electronically controlled admixture of pre-heated fresh air

  • Exhaust vent with restrictor flap

• Communication and software:

  • Programme storage in power loss

  • Ethernet port for AtmoCONTROL software connection

  • USB stick with software available (optional)

• Safety systems:

  • Electronic overtemperature monitor

  • Mechanical temperature limiter (TB), protection class 1 (DIN 12880)

  • Self-diagnostic system with fault alerts

  • Visual and acoustic alarms

• Chamber and construction:

  • Chamber volume: 449 liters

  • Internal dimensions (W x H x D): 1040 x 720 x 600 mm

  • Max. number of internals: 8

  • Max. load capacity: 300 kg

  • Max. load per shelf: 30 kg

  • Interior: Stainless steel, deep-drawn ribbing, easy-to-clean, integrated four-sided heating

  • Exterior dimensions (W x H x D): 1224 x 1247 x 784 mm (plus 56 mm door handle)

  • Exterior casing: Textured stainless steel

  • Rear housing: Zinc-plated steel

  • Installation: On lockable castors

• Electrical requirements:

  • Voltage: 400 V and 3x 230 V without neutral, 50/60 Hz

  • Power: Approx. 5800 W

• Ambient conditions:

  • Rear clearance: ≥15 cm

  • Ceiling clearance: ≥20 cm

  • Side clearance: ≥5 cm

  • Max. installation height: 2,000 m above sea level

  • Ambient temperature: +5 °C to +40 °C

  • Max. relative humidity: 80%, non-condensing

  • Overvoltage category: II

  • Pollution degree: 2