Ultrasonic Cleaner for a Canadian Clinic: Tank, Frequency and Proof of Clean
How do you choose an ultrasonic cleaner for a Canadian clinic?
The bench in a four-chair practice holds a tray of instruments that came off the chair twenty minutes ago, a sink, and a gap where an ultrasonic cleaner should be. What gets bought to fill that gap is usually decided on price and on the size of the tank, and both of those are the wrong first questions. The first question is what has to come out of the joints, because the whole purchase exists to remove soil that a brush cannot reach.
Choose on eight dimensions, each with a threshold you can read on a specification sheet or measure with a ruler.
| Dimension | What to check | Threshold to put in your file |
|---|---|---|
| Tank interior against the load | Length, width and working depth, not the nominal litre figure | Cassette or basket load fits flat with the lid on, and the basket still drops in |
| Frequency | Single frequency, or a switch between two | Two settings if the bench sees both flat surfaces and hinged joints |
| Power density | Total ultrasonic watts against usable litres | Around 30 W per litre as a floor; 320 W over a 6 L class tank works out to about 53 W per litre |
| Heating | Whether the tank heats, and to what range | A range that brackets 40 to 60 degrees Celsius, stated as a number |
| Timer and degas | Cycle settings, and whether a degas cycle is built in | A degas cycle of about 120 seconds, run at the start of the day |
| Basket | A removable basket in a stated steel grade | Yes: instruments never rest on the tank floor |
| Electrical certification | The mark on the nameplate, and the standard behind it | cETL, cUL, CSA or ULC, with the certificate number available |
| Documentation | Instructions for use, and what your own record will contain | An IFU that names instrument types and a log you can produce |
The dimension clinics under-buy is the tank, and they under-buy it in a predictable way: they size it for the number of instruments, not for the shape of the load. A cassette is a rigid rectangle, and a tank that only takes it diagonally is a tank that will be run with the lid off or with the load in two batches.
Which brands and formats are available in Canada?
Four formats are sold into Canadian clinics, and the difference between them matters more than the brand on the front panel.
- Single-frequency benchtop unit: one fixed frequency, often 40 kHz, sometimes with a heater and a mechanical timer. This is the format sold for jewellery and eyewear, and it is also what most small clinics own.
- Dual-frequency benchtop unit: a switch between a lower and a higher frequency, with heating and a digital timer. It covers both heavy soil on flat surfaces and soil in joints, which is the load mix a dental or medical bench actually sees.
- Larger single-tank unit: more litres, more transducers, and a footprint that starts to compete with bench space. It is bought for throughput, not for better cleaning.
- Washer-disinfector: a plumbed machine that cleans, rinses and thermally disinfects, with a validated cycle and printed records. It replaces the ultrasonic step and the manual rinse step together, at a different order of cost and installation.
The brands published into the Canadian market include Codyson, Lyman, Sharp and Midmark, alongside distributor house brands, and the units are frequently the same machine under different labels. Model numbers, transducer counts and frequency settings change between generations, so the document to order against is the manufacturer's current technical data sheet with a revision date. The unit we stock and support is the CliniEco CS6.2 6 L benchtop ultrasonic cleaner, dual frequency 32 and 48 kHz.
How do they compare, and where does each one fall short?
| Format | Tank and load | Frequency | Heat and timer | Cassette fit | Where it falls short |
|---|---|---|---|---|---|
| Small single-frequency bench unit | 1.5 to 3 L | one setting, usually 40 kHz | mechanical timer, often no heat | no | The load has to be unpacked; heat is missing, so heavy soil needs longer and still under-cleans |
| Dual-frequency bench unit, 4.5 L | 4.5 L class | two settings | heater and digital timer | marginal, depends on cassette | Fits the cassette only in some makes; the working depth leaves little room for a lid |
| Dual-frequency bench unit, 6 L class | 31.1 x 17.2 x 11.6 cm interior | 32 and 48 kHz | two ceramic heaters, 40 to 60 degrees Celsius, digital timer with 120 s degas | yes, with the lid on | Costs more than a small unit, and the extra litre is wasted if the case load is two instruments a day |
| Larger single tank | 10 L and up | usually one or two settings | heater and timer | yes, several at once | Bench footprint, drainage plumbing and a fill volume that drinks solution |
| Washer-disinfector | chamber, plumbed | not applicable | validated cycle | yes, and trays | Installation, water and drain, and a cost step that most single practices do not need |
Where each one falls short in practice is not about the cleaning result so much as about the record. A small unit with a mechanical timer, no heat and no degas setting gives you no parameter to write down, so the cleaning step becomes an activity rather than a controlled process. The 6 L class unit gives you four numbers to record every day: frequency, temperature, time and whether the bath was changed.
Two more limits belong on that table even though they are not faults. The 6 L tank does not take two cassettes at once, so a practice that runs six loads a day will still be batching by hand. And no benchtop ultrasonic cleaner disinfects: the step after it is drying and pouching, and the step after that is the sterilizer.
How do you use it correctly, step by step?
1. Scrub visible debris off at the sink first. An ultrasonic bath lifts soil from surfaces it can reach; it is not a substitute for removing cement or amalgam by hand.
2. Fill to the marked level with water at the temperature you will run, then add concentrate to the ratio on the instructions for use.
3. Run the degas cycle, about 120 seconds, before the first load of the day. Fresh solution holds dissolved air, and air in the bath absorbs the energy the load needs.
4. Load into the basket, hinged instruments open at the joint, lumened items with the lumen flooded and not blocked. Nothing on the tank floor.
5. Set the frequency to the load: the lower setting for heavy soil on flat surfaces, the higher one for joints, threads and narrow gaps.
6. Set the temperature in the 40 to 60 degrees Celsius band, and the time to the interval your procedure states for that load type.
7. At the end of the cycle, rinse with water of drinking quality, then dry thoroughly before anything is pouched. Residual detergent is a known route to a failed sterilization cycle.
8. Inspect, pouch, and record in the same sitting: date, machine, solution change, frequency, temperature, time, load and initials.
The solution is where most of the recurring cost sits, and it is also where the record most often goes missing. The concentrate we stock is a low-foam multi-enzyme solution mixed at 1 part to 400 to 600 parts water, supplied as multi-enzyme ultrasonic cleaning solution in 1 L bottles or 5 L pails, and the reason low foam matters is that foam is air, and air is the thing degassing exists to remove.
What goes wrong most often, and how do you catch it early?
| What you see | Root cause | How to catch it early |
|---|---|---|
| Instruments come out with soil still in the hinge | Load stacked or resting on the tank floor, so cavitation never reaches the joint | Run the basket test: a single layer, hinged instruments open, and a load that fills no more than about two thirds of the basket |
| Cleaning gets worse through the week | Solution spent, or the bath has been topped up instead of changed | Change per day and record it; a topped-up bath dilutes the enzyme until it does nothing visible |
| First load of the day cleans worse than the fourth | Solution not degassed, or the bath was filled cold | Run the 120 second degas cycle at the start of the day, every day |
| Instruments come out stained or pitted | Wrong chemistry for the material, or a dwell time the manufacturer's instructions do not allow | Check the instrument manufacturer's processing instructions before putting a new material in the bath |
| A handpiece or a bonded item comes out damaged | The item's instructions for use do not permit ultrasonic cleaning | Read the IFU for that instrument once, and keep the answer on the bench |
| The machine sounds normal but cleans nothing | Transducer or generator fault, or the tank has scaled from hard water | Hold a strip of aluminium foil in the bath for a minute: a working bath perforates it evenly, and a failing one dimples it in patches |
| Nobody can say when the bath was last changed | Cleaning log not kept, or kept in a drawer nobody opens | One line per day on the same sheet as the sterilizer log, initialled at the time |
The foil check costs nothing and is the one check most clinics have never run. It takes a minute and it separates a machine that is working from a machine that is only humming.
What does non-compliant equipment actually cost you?
Start with what the unit does. An ultrasonic cleaner does not sterilize and does not disinfect; it removes soil. That function is upstream of everything else in the chain, because the sterilizer can only kill what it can reach, and residual soil shields the surface from steam and holds organisms against it.
What a shortfall produces is invisible at the point where it happens. Cavitation energy below what the load needs leaves the hinge and the lumen as they were, the instruments look bright because the surface was cleaned, the pouch seals, the indicator changes colour and the load is released. The failure shows up later as residue baked onto a joint by the cycle, which is harder to remove than the soil that went in.
An auditor does not open with the question of which brand of cleaner sits on your bench. The question is whether you can show that the cleaning step was capable and controlled: the machine's stated parameters, the solution and its concentration, the time and temperature used, and your own record of the bath.
When that chain breaks, the consequence is not a machine replacement. Your reprocessing record is the release authority for the instruments in the period it covers. If the cleaning step behind it cannot be documented, the record loses its evidentiary value, and the releases resting on it lose theirs with it, including instruments that were in fact clean.
Responsibility for that sits with the facility running the process, not with the seller or the distributor. It is a structural feature of how reprocessing is regulated, and it is why the table below is written as a self-check rather than as a warning about anyone else's equipment.
So the purchase criterion is not the price line. It is whether you can document this machine's capability from your own file, without calling the supplier for a number you should already hold.
| What you should be able to prove | How to check it | What it means if you cannot |
|---|---|---|
| Electrical safety for equipment sold in Canada | Certification mark on the nameplate, with the certificate number available on request | Insurance and fire-safety exposure on an appliance sitting next to a sink |
| Cleaning capability | Published power, frequency, temperature range and timer, in the technical data sheet | No parameter to write into a procedure, and nothing to audit against |
| Coverage of your instrument types | The instructions for use name the instrument categories, and each instrument's own IFU permits ultrasonic cleaning | Items processed outside their permitted method, with the duty on the facility |
| Performance verification | Your own foil check and solution change record, kept with the machine | The step everyone assumes works is the step nobody checked |
| A traceable importer | Who imported the unit and under which establishment licence | No identifiable party to ask when documentation has to be reconstructed |
CliniEco Medical imports and distributes the unit described here under Health Canada establishment licence MDEL #35334, which is a fact a buyer can verify rather than an argument that any other machine is deficient. The point of the five rows is that they should come back with answers regardless of whose name is on the panel.
What should you verify before you buy?
- Measure a loaded cassette, with the lid on, and compare it with the tank interior rather than with the litre figure.
- Ask for the frequency settings in numbers, and for the ultrasonic power, not the total appliance wattage alone.
- Confirm the temperature range in degrees and whether the heater is thermostatically controlled.
- Ask whether the timer includes a degas cycle, and how long it runs.
- Read the nameplate for the certification mark and ask for the certificate number in writing.
- Ask whether the basket is a removable part with its own part number, because a basket that cannot be replaced ends the machine's life early.
- Find out whether the manufacturer's instructions for use name your instrument categories, and check your handpieces against their own instructions separately.
- Decide where the cleaning record will live before the machine arrives, since the machine cannot produce the record for you.
Cleaning is the first of three steps and the only one that is invisible afterwards, which is why the chain matters: what leaves the tank is dried and then pouched, and the pouch is what carries the load into the cycle and out to the chair. The Class 4 self-sealing sterilization pouches, 200 per box are the barrier we stock for loads at that stage of the workflow.
Sites buying for more than one location can route the order through wholesale and institutional pricing, and the rest of the autoclave and ultrasonic equipment range sits alongside the unit described here.
References
- ISO 17664-1:2021 — Processing instructions for critical and semi-critical medical devices — ISO, Geneva; §6 information to be provided by the medical device manufacturer; verified 2026-10-27
- ISO 15883-1:2006 — Washer-disinfectors, general requirements, terms and definitions and tests — ISO, Geneva; §4.2 cleaning performance requirements; verified 2026-10-27
- RCDSO Standard of Practice — Infection Prevention and Control in the Dental Office — Royal College of Dental Surgeons of Ontario; sections Cleaning, Preparation and packaging; verified 2026-10-27
- Public Health Ontario — Cleaning, Disinfection and Sterilization of Medical Equipment/Devices in All Health Care Settings, 3rd edition — Public Health Ontario, May 2013; practice audits of cleaning processes; verified 2026-10-27
Not sure how this applies to your own setup? Ask a sterilization compliance specialist — you’ll get a written answer specific to your equipment and province, with the regulation or standard cited.
Related Reading
- Choosing an Ultrasonic Cleaner Tank Size for a Canadian Dental Clinic
- What Does Dual-Frequency 32/48 kHz Change in Ultrasonic Cleaning?
- Ultrasonic Bath Degassing: Why Fresh Solution Needs It and How Long It Takes
Frequently Asked Questions
Does an ultrasonic cleaner sterilize instruments?
No. It removes soil, and removing soil is what makes the next step possible. Cement residue, polishing paste and dried blood from a hinge shield the surface from steam, so a sterilizer that passed its indicator can still leave instruments that were never properly cleaned. Cleaning, drying and pouching come before the cycle, never instead of it.
How do I know a 6 L tank will take my cassette?
Measure the cassette's outside length and width and compare them with the tank interior, which is 31.1 cm by 17.2 cm with 11.6 cm of working depth on the unit described here. Leave room for the basket wall and for the lid: the cassette has to sit in the basket, not on the tank floor, and a cassette that only fits diagonally is a cassette that will be run without its lid or in two halves.
What does dual frequency actually change?
The bubble size and the energy that reaches the surface. The lower setting drives larger bubbles with more energy for heavier soil on flat surfaces, and the higher setting drives smaller bubbles into joints, threads and narrow gaps. A single-frequency unit is fixed at one of those trade-offs, which is why the switch matters on a bench that sees both a scaler and a hinge.
How much cleaning solution goes into a 6 L tank?
Mix to the ratio the solution's instructions for use states, which on the concentrate we stock is 1 part to 400 to 600 parts water. A tank filled to its marked level holds around 5 L of working volume, so a 1:500 mix is about 10 mL of concentrate. Measure it rather than estimating by eye, because a weak bath under-cleans quietly and a strong one leaves residue that is harder to rinse off.
How often should the solution be changed?
At least once per working day, and immediately when the bath is visibly soiled, when the load no longer comes out clean, or when foam builds up. The change is recorded against the machine, because the question an auditor asks is not whether the bath was changed but whether you can show when.
Does the machine's electrical certification matter for a clinic?
Yes. A benchtop unit sits next to a sink, so the certification mark on the nameplate is the evidence that the appliance was tested to a recognized standard, and that insurance and fire-safety reviewers have something to read. On the unit we list, the mark is cETL by Intertek to CSA C22.2 No. 68 and UL 73, and the supply is 100 to 120 V.
CliniEco Medical holds Health Canada establishment licence MDEL #35334 as an importer of medical devices, at 255 Duncan Mill Road, Suite 512, Toronto, ON M3B 3H9. Product specifications last verified against our live catalogue on 2026-10-27. Reviewed quarterly. Last review: 2026-10-27.
Last updated: October 2026.
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