Midmark Ritter M11 Ultraclave Autoclave Automatic Tabletop Sterilizer


The Midmark M11 Steam Sterilizer is designed to be safe, reliable and easy to use. With one of the largest chambers of any tabletop autoclave on the market, the M11 can optimize your supply of available sterile instruments by reducing the time and effort required for sterilization.


Steam-flush pressure pulse air removal system ensures proper steam sterilization.

Easy to Use

Pre-programmed sterilization cycles and intuitive LCD display with prompts ensure quick, confident operation.


Real-time alerts notify users promptly of any critical system errors.

Award Winning

Year after year, Midmark® Sterilizers have won both the Dental and Ortho Townie Choice Awards®.

    Product Enquiry

    Please fill out the form so we can get basic info from your enquiry:

    SKU: mid-1000-003 Category:


    Overall length w/plug:
    18.1 in (50.0 cm)

    Overall width:
    17.8″ (45.2 cm)

    Overall height w/printer:
    17.8″ (45.2 cm)

    Minimum countertop area:
    21″ D x 17.8″ W (53.3 cm x 45.2 cm)

    11″ diameter (28 cm)
    18″ depth (45.7 cm)
    6.5 gal usable volume (24.6 liters)

    Two large – 9″ W x 15″ L x 1.1″ D
    (38 cm x 2.9 cm)
    Two small – 6.6″ W x 15″ L x 1.1″ D
    (16.8 cm x 38 cm x 2.9 cm)

    Pouch Rack:
    6-slot pouch rack
    1 included with sterilizer
    Additional racks available for purchase

    Unit weight:
    99 lb (44.9 kg)

    Shipping weight:
    131 lb (59.4 kg)

    Water reservoir capacity:
    1.4 gal (5.3 liters)

    Electrical requirements:
    115 VAC, 50/60 Hz, 15 A single phase
    115 VAC has 1,425 W tubular immersion heater
    230 VAC, 50/60 Hz, 10 A single phase
    230 VAC has 1,500 W tubular immersion heater

    Installation: Use on a level, water-resistant material such as laminate, stainless-steel or stone surface. Allow 2.0″ (5.08 cm) on sides and rear, and 5″ (12.7 cm) above to allow space to fill reservoir and change the printer paper roll.

    Safety standards:
    UL listed to US and Canada standards
    UL 61010-1, 2nd edition
    IEC 61010-2-040, 1st edition
    CAN/CSA C22.2 No. 61010-1, 2nd edition
    CSA C22.2 No. 61010-2-040-07, Part 2-040, 1st edition

    Meets the requirements of ASME Boiler and Pressure Vessel Code.
    A separate (dedicated) circuit is recommended for this sterilizer.

    IEC 60601-1-2 Edition 4.0 2014-02
    CISPR II:2009, A1:2010 Class A, Group 1
    IEC 61000-3-2:2014, Part 3-2
    IEC 61000-3-3:2014, Part 3-3
    ANSI/AAMI ST55:2010(R)2014
    ANSI/AAMI/IEC 62304



    Additional information

    Weight 59.4 kg
    Dimensions 50.0 × 45.2 × 45.2 cm


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