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Ritter by Midmark M11 Ultraclave Autoclave Sterilizer

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The world is evolving; this includes new infectious organisms that invade our everyday life. The healthcare industry must continue to evolve with it. The Ritter by Midmark M11 Autoclave is ahead of its time in effective instrument processing and sterilization. The M11 Autoclave is the largest counter-top autoclave that Ritter offers. With an 11” x 18” internal chamber, the Midmark M11 is perfect for large packs and instruments.

Our company is an authorized distributor for medical facilities.

Self Program Controls allow the user to customize cycle parameters for specific processing requirements. The following can be easily changed: Time (3 – 90 minutes), Temperature (230 – 275 degrees), Dry Time (0 – 60 minutes and Vent (slow or fast). Two programming buttons on the Midmark M11 Autoclave allow the user to store changes for future use.

Large LCD Display allows for easy viewing of cycle indicators. On screen status of cycle during lets the user know where the current cycle stands.

The ever-popular auto-opening door feature opens quietly once the cycle is complete. This function allows the steam to deplete from the unit and start the quick drying process.

The Midmark M11 Autoclave has a huge 11” x 18” internal chamber, making it the largest (internal) capacity tabletop autoclave available.


    • Overall length w/plug: 23.8" (60.5 cm) Overall width: 17.8" (45.2 cm) Overall height w/printer: 17.8" (45.2 cm) Minimum Countertop area: 17.8" x 21.0" (45.2 x 53.3 cm)
    • Chamber: 11" diameter (28 cm) 18" depth (45.7 cm) 6.5 gal. usable volume (24.6 liters)
    • Trays: Two large – 9" W x 15" L x 1.1" D (22.9 cm x 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)
    • Unit weight: 99 lbs. (44.9 kg)
    • Shipping weight: 131 lbs. (59.4 kg)
    • Water reservoir capacity: 1.4 gal. (5.3 liters)

    Electrical Requirements:

    • 115 VAC, 50/60 Hz, 15 Amps, Single Phase
    • 115 VAC has 1425 watt tubular immersion heater

    Safety Standards:

    • UL61010-1
    • UL61010-2-040
    • CSA C22.2 No. 61010-2-040-07 Part 2-040

    Meets the requirements of ASME Boiler and Pressure Vessel Code

    A separate (dedicated) circuit is recommended for this sterilizer


    Quick Links: 

    Ritter by Mimark M11 Autoclave Brochure
    Visit Midmark's "Autoclave How-To" YouTube Video Page 
    Ritter by Midmark M11 Autoclave Service Parts Manual
    MonsterMed Blog Post: Tales from Customer Service - Autoclave Delivery