ML Semi-Automatic Benchtop Autoclaves

  1. 23 and 85 liter autoclave chamber volumes
  2. Sterilizes low sensitivity loads, including liquids, solids and glassware
  3. Autoclave door is designed with a number of safety features
  4. Chamber constructed of 316L grade stainless steel
  5. Maintenance access to all components for easy servicing
  6. Complies with the strictest international directives and standards
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Manual Laboratory Sterilizers

Tuttnauer's ML laboratory line of semi-automatic, electro-mechanically controlled, vertical steam sterilizers provide safe, economical and effective sterilization.

The semi-automatic laboratory autoclave series is an affordable sterilizer for laboratories that do not want to compromise on quality, safety and reliability and need to sterilize loads with low sensitivity. The ML semi-automatic series is available as benchtop autoclaves with 23 or 85 liter chambers. Process control is preformed by a pressure switch. The semi-automatic control system includes a timer that can be set from 1 to 99 minutes. The ML models have a semi-automatic control panel.

Sterilization Applications

  • Liquids such as nutrient media and buffer solutions
  • Solid items such as pipettes, tubes and filters
  • Glassware and plastic articles

Quality Features

  • The chamber is constructed of long lasting 316L grade stainless steel with superior corrosion resistance
  • The autoclave is designed for easy servicing allowing maintenance access to all components
  • Drain Protection: The exhaust drain is mixed with cold tap water that cools the exhaust’s temperature before reaching the drain.

Sterilizer Directives and Standards Compliance

Tuttnauer’s high quality laboratory autoclaves comply with the strictest international directives and standards.

  • Pressure Equipment: PED 97/23 EEC, EN 10028-7, ASME Code Sec VIII 
  • Safety: IEC/UL/EN61010-1, IEC 61010-2-040, EN 61326
  • Sterilization: DIN 58951 Series, ISO 17665-1:2006
  • Quality System: ISO 9001:2000, ISO 13485:2003

Model Chart

Type Chamber Dimensions
(ø x depth) (in mm)
Chamber Volume
(in Liters)
External Dimensions
(W x H x D) (in mm)
2540 ML
250 x 400
510 x 365 x 545
3870 ML
380 x 690
660 x 525 x 875

Safety Features

The autoclave lids are designed with a number of independent mechanical and digital safety features.

  • A safety device prevents the operator from opening the door when the chamber is pressurized
  • A cycle cannot start if the door is open or not properly locked
  • The door cannot unlock until chamber pressure reaches room pressure
  • Safety Valves: The chamber is equipped with safety valves – if the pressure exceeds the allowed limit the safety valves will discharge
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