Lisa sterilizer

Lisa sterilizer with illuminated green status light and colour display. The sterilizer is displayed in a dark blue, studio-lit environment that highlights its modern appearance.

Excellence. Redefined.

Discover a sterilizer designed to offer you something truly valuable. Lisa combines intuitive operation with a refined, modern look – ensuring clarity, confidence and effortless control in your workflow. From the moment you start a cycle to the moment you remove your instruments, Lisa delivers a smooth, reassuring experience thanks to the colour touch screen, Eco Dry +, EliSense, EliTrace, ioDent®, the W&H Steri App and appropriate accessories.

Sterilization, Hygiene & Maintenance

Sterilization, Hygiene & Maintenance

System Overview

Lisa

    • Excellence. Thanks to intuitive usability

      The 5" colour touchscreen is more than just a display – it’s your gateway to intelligent operation. Combined with EliSense, it provides intuitive access to a smart menu structure that simplifies daily routines, accelerates workflows, and enhances efficiency. Every interaction is clear, guided, and specifically designed for modern reprocessing.

    • User interface

      Clear navigation for a smoother workflow

      Intuitive user interface
      The logical navigation, combined with selectable dark or white mode ensures a smooth, streamlined, workflow and optimal readability from the very first touch and in any lighting condition.

      Simple cycle selection
      As soon as Lisa is switched on, the home screen immediately shows the available sterilization cycles – no extra steps required.

      Risk‑free cycle selection
      Thanks to AI support, only relevant cycles are displayed, reducing complexity and helping prevent operating errors.

    • Guided user support

      Integrated help functions provide on‑screen instructions whenever support is needed.

      Guided maintenance and test cycles
      Clear 3D animations guide you step by step through the most important maintenance tasks and test procedures, as Helix, B&D or vacuum tests – making routine procedures simple and straightforward.




      • Eco Dry + technology

        Excellence. Thanks to Eco Dry +

        Drying is more than the final sterilization step – it is essential for the sterile, reliable, and high quality instrument reprocessing. Eco Dry + from W&H offers intelligent, load dependent drying that combines efficiency, protection, and sustainability in one advanced feature. Automatically adapting to each cycle, Eco Dry + ensures consistently dry instruments while optimising time, energy, and water consumption.

      • Fast, energy efficient cycles

        Reprocessing in less than 15 minutes!

        Wipe disinfection in 1 minute
        Disinfect your instruments before cleaning and servicing by wiping.

        10 seconds maintenance
        The Assistina Twin reduces the maintenance process to a record time of 10 seconds.

        Sterilization in 13 minutes
        With the Lisa fast cycle, the instruments can be removed from the sterilizer ready for use after only 13 minutes.

        • Time savings

          Type B cycles process and
          perfectly dry 2 KG OF LOAD IN
          LESS THAN 30 MINUTES.

        • Energy and water savings

          An optimised drying time means
          reduced energy and water consumption,
          making Lisa “the green solution”.

        • Extends service life

          Automatic adjustment of the
          drying time depending on the load
          reduces heat exposure time, extending the service life of your instruments.

        • Excellence. Thanks to EliSense


          Status Sense, Temperature Sense, and Smart Sense – three excellent technologies combined in EliSense for optimal workflows and maximum performance.





        • Cycle in progress



          Cycle finished


          Cycle stop
          Occurs every time you manually stop the cycle.


          Cycle error
          Occurs every time an error message is displayed.

        • Temperature Sense

          Safer handling made easy

          EliSense not only protects the sterilization process, but also you – warning you if the door is opened while the load is still too hot to touch without gloves or a tray holder.

          Load temperature is low
          The load can be handled (temperature is below 40°C).


          Load temperature is at a moderate level
          Load can be handled with care (temperature is between 40 to 60°C).


          Load temperature is hot
          Load can be handled with care (temperature is above 60°C).


        • Smart Sense

          Provides helpful guidance


          by indicating:

          › When to replace Multidem
          › How to achieve optimal drying results
          › When a vacuum test can be performed based on chamber temperature
          › Suggestions for optimising the reprocessing process


          • EliTrace traceability

            Excellence. Thanks to EliTrace

            With EliTrace Lisa enables reliable traceability and documentation of the sterilization process – down to the individual instrument or kit. All relevant data is recorded directly within the sterilizer, without any additional software or computer. Fully integrated into the Lisa system, EliTrace ensures transparent documentation and efficient workflows with minimal effort.

            Step 1
            Collecting data

            Collecting data

            The first step for full traceability is creating a database of all instruments and kits. This can be done directly by touching the screen – via the W&H Steri App or PC.
            Step 2
            Load identification

            Load identification

            There are three ways for load identification.

            First: you print one label per instrument or kit, to create the matrix label folder. During loading, you scan and then print the final label to be added to the pouch.

            Second: you preprint a certain amount of related barcode labels and put them into an organizer. When it comes to sterilizing, you simply attach the related barcode label to the pouch and scan it.
            Now the EliTrace system knows which instruments or kits are in the pouch.

            Third: directs you to the display, where you choose the related product or kit.
            Then the related barcode label is printed automatically.
            https://a.storyblok.com/f/45617/330x330/ea07f5d71d/wh_print-label-add-to-pouch.jpg
            Step 3
            Retrieval

            Retrieval

            https://a.storyblok.com/f/45617/330x330/50ca195869/wh_label-scan-at-pouch-bar-code-scanner.jpg
            After storing the sterilized instruments in their pouches, a simple scan of the barcode labels when at the dentist´s chair shows you and your patient when the instruments or kits have been successfully sterilized.

            • ioDent<sup>®</sup>

              Excellence. Thanks to smart technologies

              Smart technologies take sterilization to the next level.
              Built on a sophisticated technical concept, the Lisa sterilizer opens up future-ready possibilities while simultaneously streamlining everyday workflows. With ioDent® and the W&H Steri App, Lisa integrates seamlessly into your digital processes.

              Discover ioDent® Smart Dental Solutions.

            • ioDent<sup>®</sup> Benefits

              Your benefits with ioDent®

              › Cycle protocols: automatic, audit-proof documentation of all sterilization cycles.

              › Routine test logs: with eLog, routine tests (e.g., Helix tests) and sterilization cycles are digitally and securely documented – fast, simple, audit-ready.

              › Traceability with EliTrace: complete tracking of instruments and their use.

              › Real-time monitoring: immediate status messages and maintenance notifications – for maximum availability.

              › Central device management: software updates, device status, and product registration at a glance.

              › Digital service access: repair offers, service partners, and service status available at any time.

            • W&H Steri App

              The W&H Steri App is an advanced smartphone and tablet application that allows controlling and remote monitoring of the sterilizer in your dental practice.

              Main features:
              > Remote control of your sterilizer
              > Advanced traceability with EliTrace
              > Report creation
              > User management
              > Backup functionality

              W&H Steri App



              Appropriate accessories

              EliReel

              W&H‘s sterilization reels ensure excellent drying quality, resistance and an easy-to-read steam indicator. These features simplify both the sealing and sterilization processes and also improve safety in the clinic.
              More Info!

              Seal2 and SealVal2

              The W&H sealer creates a 12 mm wide seal in just two seconds without the risk of burning the sterilization package. The absolute hermetic and strong protection of the sterile goods from environmental influences guarantees continuing sterility. More Info!

              Helix test

              The Helix test ensures optimum process control for type B sterilizers. The QR code on the test strips enables full traceability and easy use with eLog, the digital logbook.
              More Info!

              Barcode scanner

              This enables you to scan labels into patient files.

              Barcode label printer

              The label printer can be connected to the sterilizer to print barcodes. In combination with the integrated data logger, it improves your traceability system. The label printer is a quick and easy tool to link the sterilization cycle with patient files.
              More Info!



              W&H AIMS hygiene workflow

              Sterilization, hygiene, and maintenance are increasingly important in the dental practice. The Lisa sterilizer is an optimally matching part of W&H´s wide range of products for the safe reprocessing of instruments, contra-angle and turbine handpieces according to the recommended, holistic W&H AIMS hygiene workflow.


              Product & consumables

              Lisa sterilizer 17 l

              supplied with reversible rack, 5 aluminium trays, drain tube, tray holder, 8 GB USB drive, door opening tool, factory test

              LISA VA131-17 2026 (220 V)
              REF 19961100

              Chamber size 17 litres


              Lisa sterilizer 22 l

              supplied with reversible rack, 5 aluminium trays, drain tube, tray holder, 8 GB USB drive, door opening tool, factory test

              LISA VA131-22 2026 (220V)
              REF 19962100

              Chamber size 22 litres


              Download Area

              FAQ

              • What is the maximum noise level of the Lisa sterilizer?
                The max. noise level of Lisa 2019 is 64.3 dB. more
              • How do I clean the water tanks and what products should I use?
                Water tank cleaning instructions are provided in the Instructions for Use, chapter “Maintenance”. In addition, a video description is available: • in the sterilizer, in the maintenance section of the menu; • in the Consumables & Accessories and Video Tutorial section of this website. more
              • Warning about programmed maintenance.
                POSSIBLE CAUSE
                The maintenance program needs to be carried out.
                SOLUTION
                Contact an authorised W&H service partner. more
              • The sterilization (PROCESS) phase of a sterilization cycle was longer than expected.
                POSSIBLE CAUSE
                The chamber temperature dropped below the minimum threshold and the software performed a successful recovery.
                SOLUTION
                Wait for cycle completion. If the problem occurs frequently, contact an authorised W&H service partner. more
              • The sterilizer enters into “Standby mode” immediately after being switched on.
                POSSIBLE CAUSE
                The unit was turned off while in standby mode.
                SOLUTION
                Press the standby mode button to exit. more
              • When starting a cycle, the chamber door locks but re-opens immediately. The “Open the door” message appears.
                POSSIBLE CAUSE
                Door seal not properly placed.
                SOLUTION
                Ensure that the door seal is correctly inserted around the whole circumference.

                POSSIBLE CAUSE
                Door jammed by external objects or by the load itself.
                SOLUTION
                Remove any objects interfering with the chamber door. Check for interference between the door and the chamber furniture and/or the load. more
              • No cycles are stored in the cycle history menu.
                POSSIBLE CAUSE
                An electronic board was replaced when serviced.
                SOLUTION
                The memory of the old board can not be restored. Consult the cycle history in the USB pen drive. more
              • Stains, spots, or colour change on instruments.
                POSSIBLE CAUSE
                Instruments rinsed with tap water and not dried before sterilization.
                SOLUTION
                Ensure that instruments are rinsed with distilled or demineralized water and completely dry before they are placed in the sterilizer.

                POSSIBLE CAUSE
                Use of water of poor quality or water containing chemical substances.
                SOLUTION
                Drain both water tanks. Use good quality water (see chapter “Water quality” in the Instructions for Use).

                POSSIBLE CAUSE
                Organic or chemical residues on the instruments
                SOLUTION
                Clean, rinse, and dry instruments before placing them in the sterilizer (see chapter “Load maintenance and preparation” in the Instructions for Use.

                POSSIBLE CAUSE
                Dirt in chamber, trays, tray rack.
                SOLUTION
                Clean the chamber and wash the chamber furniture.

                POSSIBLE CAUSE
                Contact between instruments of different materials.
                SOLUTION
                Ensure that instruments of different materials do not touch each other (aluminium, carbon or stainless steel, etc.); place them on different trays or cassettes or pouch them (see chapter “Load maintenance and preparation” in the Instructions for Use).

                POSSIBLE CAUSE
                Scale deposits on the chamber.
                SOLUTION
                Clean the chamber and use good quality water (see chapter “Water quality” in the Instructions for Use). more
              • At the end of the cycle, there is residual water on load.
                POSSIBLE CAUSE
                Sterilizer not properly levelled.
                SOLUTION
                Place the sterilizator on a flat, level surface.

                POSSIBLE CAUSE
                Overloaded chamber.
                SOLUTION
                Comply with the maximum load weight limits for each type of load. Always use the chamber rack for trays and cassettes.

                POSSIBLE CAUSE
                Chamber filter clogged.
                SOLUTION
                Remove and clean the chamber filters.

                POSSIBLE CAUSE
                Chamber filter cap mispositioned.
                SOLUTION
                Mount the chamber filter cap properly (see chapter “Monthly or 50-cycle maintenance - Cleaning the chamber filter” in the Instructions for Use).

                POSSIBLE CAUSE
                Load incorrectly placed.
                SOLUTION
                Follow the recommendations as listed in chapter “Load maintenance and preparation” in the Instructions for Use. more
              • Water is leaking at the front of the sterilizer.
                POSSIBLE CAUSE
                Leaks through the chamber door seal.
                SOLUTION
                Clean or replace the door seal. Clean the door surface facing the chamber.

                POSSIBLE CAUSE
                Internal leak.
                SOLUTION
                Contact an authorised W&H service partner. more
              • The sterilizer remains switched OFF.
                POSSIBLE CAUSE
                The main switch or network circuit breaker is OFF.
                SOLUTION
                Activate the main switch or network circuit breaker (ON).

                POSSIBLE CAUSE
                No voltage at the socket.
                SOLUTION
                Check the building electrical supply.

                POSSIBLE CAUSE
                The power cord is not connected properly.
                SOLUTION
                Check and connect the power cord properly. more
              • Should I pouch/wrap my instruments and how long can I store them after sterilization?
                To ensure that your instruments are stored in a sterile state from their successful sterilization until they are used, W&H recommends wrapping them in suitable sterile barrier systems before sterilization. The recommended storage period can be found in the recommendations of the wrapping material manufacturer. For further information, please contact your dealer. more
              • How do I change consumable components on my sterilizer?
                Consumable replacement instructions are provided in the Instructions for Use, chapter “Maintenance”. In addition, a video description is available: • in the sterilizer, in the maintenance section of the menu; • in the Consumables & Accessories and Video Tutorial section of this website. more
              • Who should I contact to validate and maintain my sterilizer?
                Validation shall be carried out by an official authority. Maintenance tasks shall be carried out by a qualified and authorised technician. more
              • Does my sterilizer need any periodic qualification/validation?
                Validation generally comprises a range of tests defined in internationally recognised standards. These tests begin for every device with the factory tests at W&H. In addition, corresponding documentation is included with your device. Prior to commissioning the device at your premises, the technician performs further checks to ensure the device functions correctly. Then, depending on the national/regional laws and directives, the device must be subjected to a so-called renewed performance qualification at regular intervals. For further information, please contact your dealer. more
              • How long should I archive the documentation of regular tests?
                Keep the results according to your country/regional specific laws and guidelines. Those records can be of assistance in case of service as well. more
              • Do I need to document the results of all periodic tests?
                W&H recommends recording all periodic tests, repairs, and modifications on the sterilizer in a logbook including date and signature of the person who carried out the test or other activity. Compulsorily of recording is regulated by local/national guidelines. more
              • What is validation?
                Validation is a testing procedure carried out by an official authority, proving the effectiveness of your sterilizer. Compulsories and frequency of validation are regulated by local/national guidelines. more
              • Warning about consumable replacement.
                POSSIBLE CAUSE
                A consumable needs to be replaced.
                SOLUTION
                Order the requested consumable (door seal and HEPA/bacteriological filter) and replace it. See the chapter “Maintenance” in the Instructions for Use. more
              • The sterilizer is connected to an automated water supply system, there is no clean water in the tank and the automatic water filling does not fill the water.
                POSSIBLE CAUSE
                Water filling system not connected.
                SOLUTION
                Connect the water filling system to the sterilizer. (see Instructions for Use).

                POSSIBLE CAUSE
                When the water filling system attempted to fill the tank, water was temporarily unavailable.
                SOLUTION
                Since the water tank filling is attempted only once in-between cycle execution, this event inhibits water feeding. Switch the sterilizer OFF and then ON again.
                Check the external water supply system.
                Check for water leaks from the sterilizer.

                POSSIBLE CAUSE
                Faulty MIN water level sensor in the clean water tank.
                SOLUTION
                Contact an authorised W&H service partner. more
              • The cycle report printer does not work.
                POSSIBLE CAUSE
                Printer not properly connected or not powered.
                SOLUTION
                Check the data and power connection to the printer. more
              • Warning about saving to the USB (HTML and SCL files)
                POSSIBLE CAUSE
                The USB drive is disconnected or full.
                SOLUTION
                Check presence and condition of the USB drive. If the problem persists, contact an authorised W&H service partner. more
              • Do I need to carry out periodic testing on my W&H sterilizer?
                All W&H sterilizers feature test cycles (B&D/Helix test, Vacuum test). Compulsory and frequency of testing are regulated by local/national guidelines. more
              • Which water quality should I use for my sterilizer?
                The water quality for sterilizers is internationally specified by standards and directives. The reasons for this are that your sterilizer can be seriously damaged by it or the sterilization can be jeopardised. Consequently, only water with conductivity of less than 10 µS/cm in North America and 15 µS/cm for the rest of the world should be used for your W&H sterilizer. The Water treatment devices Multidem and Osmo are especially designed to prepare suitable water (see chapter “Water quality” in the Instructions for Use). more

              Instructions for use

              Find all languages of the Update Hygiene and Maintenance (EN ISO 17664:2017) in the Download Centre.

              Videos & Tutorials

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            • Lisa sterilization cycles

              Sterilization cycle: B-Universal 134 B-Prion 134 B-Universal 121 Fast cycle
              Temperature: 134 °C 134 °C  121 °C 134 °C
              Holding time (minutes): 4' 18' 30" 20' 30" 3' 30"
              Total cycle duration
              (minutes) including
              complete drying:
              ecodry Typical
              load
              ecodry Typical
              load
              ecodry ecodry
              Lisa 17
              Automatic from
              21' to 41'
              28'
              Automatic from
              36' to 57'
              43' 40' to 67' 13' to 20'
              Lisa 22
              Automatic from
              21' to 45'
              28'
              Automatic from
              36' to 61'
              43' 40' to 72' 13' to 21'
              Lisa 17 loads:
              Lisa 22 loads:
              max. solid 4.5 kg/typical 2 kg/max. porous 1.5 kg
              max. solid 6 kg/typical 2 kg/max. porous 2 kg
              max. solid 2 kg
              max. solid 2 kg
              Lisa 17 / 22 containers load: max. 9 kg –
              Test cycles: Helix/Bowie and Dick/Vacuum

              Items supplied with reversible rack, 5 aluminium trays, drain tube, tray holder, 8 GB USB drive, door opening tool, factory test  

              Lisa Sterilizer

              Trade name: Lisa
              Type: VA131-17 VA131-22
              Chamber size: 17 l 22 l
              Power supply: 200–240 V AC; 50/60 Hz; 10 A
              Power consumption: 2.0–2.4 kW
              Overall dimension
              (width × height × depth):
              465 × 452 × 634 mm
              Weight (empty): 46 kg 47.5 kg
              Main/used water tanks: 4.8/4.8 l
              Working range: 7 to 15 cycles
              Usable space in chamber
              (width × height × depth)¹:
              195 × 195 × 312 mm 195 × 195 × 400 mm
              Connection types: 5 USB ports, 1 Ethernet port, integrated automatic water filling connection

              (1) Usable space is referred to standard rack configuration.

              Lisa sterilizers were designed, certified and validated with the most stringent regulations, directives and standards:

              2017/745

              Medical Device Regulation

              IEC 61010-1

              Safety requirements

              2012/19/EU

              Waste Electrical and Electronic Equipment

              IEC 61010-2-040

              Specific requirements for steam sterilizer

              EN 2014/68/EU

              Pressure Equipment Directive

              IEC 61770

              Electric appliances connected to the water mains

              IEC 61326-1

              Electromagnetic compatibility

              EN 13060

              Small steam sterilizers

              › The sterilizer can be validated according to EN ISO 17665