Memmert Steriliser S SN55plus

Memmert Steriliser SN55plus

Precision Hot Air Sterilisation for Laboratory Safety

The Memmert SN55plus is a premium hot air steriliser designed for reliable and validated sterilisation of laboratory instruments and materials. With advanced control functions, dual temperature sensors, and intelligent safety features, it guarantees compliance with international standards for medical devices (CE 0197 certified).

Key Features

• TwinDISPLAY with dual high-definition TFT screens

• Adaptive PID microprocessor control with precise temperature regulation

• SetpointWAIT function ensures sterilisation only starts at target temperature

• HeatBALANCE feature allows heating distribution adjustment from -50% to +50%

• Programmable with AtmoCONTROL software via USB or Ethernet

• Visual and acoustic alarms with integrated autodiagnostic system

• Advanced over- and under-temperature protection (ASF)

Applications

• Sterilisation of instruments, glassware, and lab tools

• Ideal for medical, pharmaceutical, and research laboratories

• Use in environments requiring consistent and accurate hot air sterilisation

Specifications

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

• Temperature setting accuracy:

  • Up to 99.9 °C: 0.1 °C

  • From 100 °C: 0.5 °C

• Working temperature: at least 5 °C above ambient up to +250 °C

• Temperature sensors: 2 Pt100 sensors (DIN Class A) in 4-wire circuit

• Control technology:

  • TwinDISPLAY adaptive digital PID controller

  • HeatBALANCE for top/bottom heat tuning

  • SetpointWAIT for precise timing

  • Timer adjustable from 1 min to 99 days

  • Adjustable parameters: temperature (°C/°F), air flap position, time zones

• Ventilation:

  • Natural convection

  • Electronically adjustable air flap for pre-heated fresh air

  • Vent connection with restrictor flap

• Communication and programming:

  • Programme memory during power failure

  • AtmoCONTROL software via USB stick or Ethernet port

• Safety:

  • Mechanical temperature limiter TB (Class 1)

  • Overtemperature monitor TWW (Class 3.1) or TWB (Class 2)

  • AutoSAFETY function with ASF for critical temperature control

  • Visual and acoustic alarm

  • Fault diagnostic system

• Interior and construction:

  • Volume: 53 litres

  • Dimensions (W x H x D): 400 x 400 x 330 mm

  • Max. number of shelves: 4

  • Max. chamber load: 80 kg

  • Max. shelf load: 20 kg

  • Stainless steel interior with deep-drawn ribs and four-side heating

  • Supplied with 1 electropolished stainless steel grid

  • Calibration certificate at +160 °C

• Exterior:

  • Casing: textured stainless steel

  • Dimensions (W x H x D): 585 x 784 x 514 mm (+56 mm door handle)

  • Rear housing: zinc-plated steel

• Electrical:

  • 230 V, 50/60 Hz, approx. 2000 W

  • 115 V, 50/60 Hz, approx. 1700 W

• Environmental conditions:

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

  • Relative humidity: max. 80%, non-condensing

  • Max installation altitude: 2,000 m

  • Minimum clearance: rear 15 cm, top 20 cm, sides 5 cm

  • Overvoltage category II, Pollution degree 2