FAQ - Frequently Asked Questions

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What is ultrasonics, and how does it work?

Ultrasound is sound energy whose frequency is above the normal human hearing range. In an ultrasonic cleaner, ultrasonic energy is transmitted to the cleaning solution via a bank of transducers attached to the machine's tank. At sufficient ultrasonic power levels, tiny regions of vacuum often called cavitation bubbles form in the liquid as the peak sound wave expansion passes. These bubbles implode almost immediately, creating localised microscopic high-pressure jets and shock waves within the liquid which can dislodge foreign particles from the surface of any articles placed in the tank.

Why do I need to de-gas the fluid prior to the cleaning process?

After filling the tank with water (not temperature critical) and adding a measured amount of recommended detergent, then switch on your machine for a few minutes in order to expel dissolved air bubbles as these bubbles will affect the cleaning effectiveness. You will notice a change in sound and hear a high pitch "hissing" sound when degassing process is completed. When loading each time, place the basket/tray inside the tank gently to avoid re-introducing air into the fluid. Degassing time will vary depending on type of chemical used (e.g. aqueous or solvent), temperature, viscosity etc.

What solutions should I use for surgical and dental instruments?

Use only a neutral or low alkaline detergent. It must be low foaming as there is a risk that foam may settle on the instruments when being removed from the machine. Do not use detergents containing chlorides or any corrosive chemicals that will corrode the tank. Be aware that excess amounts of certain chemical additives will not support ultrasonic cavitations. Check with your manufacturer or supplier if in doubt.

How long do I clean the surgical instruments?

 It should take 3-5 minutes. Extended times are likely to re-deposit the soil removed back onto the instruments. Generally, it is difficult to establish guidelines due to the several factors need to be considered as follows:

  • Wide variety of sizes, weights etc.
  • Using appropriate cleaning solution.
  • Overload the machine with unnecessary mass.

It is therefore wiser to start with a few parts so that they can be cleaned quickly and thoroughly. You can add additional parts and check to ensure the same cleaning results.

How often do I need to change water?

When the water is heavily contaminated or visibly clouded, it should be immediately replaced. Replacement of the cleaning solution is necessary at least daily (where the machine is used daily) or more frequently, depending on how many what types of parts are being cleaned in your ultrasonic cleaner. If the solution is excessively contaminated, it will cause a loss of ultrasonic cleaning power and possible damage to your machine.

Can I put my hands into the water when my ultrasonic cleaner is activated?

As part of the occupational health and safety, no part of the operator's body should be submerged into the water during operation as the ultrasonic energy is enough to cause damage to joint tissues and result in long-term arthritic conditions.

Do I have to operate my ultrasonic cleaner with lid closed?

Your machine should be operated with lid closed in order to prevent excess emission of noise and aerosols.

How do I test the ultrasonic efficiency of my ultrasonic cleaner?

We recommend the aluminium foil test. After the fluid is degassed, the aluminium foil test can be carried out as follows:  

  1. Suspend a strip of thin aluminium foil approximately the width of the tank and double the depth.
  2.  Lower the foil into the operating tank vertically until almost touching the bottom and hold for 10 seconds.
  3.  Remove the foil from the tank and observe the even distribution of perforations and small pin prick holes.
  4. The indentations should be fine and evenly distributed.

For more information on the above foil test procedures, please see these documents for download and print: Foil Test - Version 1, Foil Test - Version 2.

Why should I use a basket/tray?

Dropping in heavy/sharp/hard parts into the tank can damage your ultrasonic cleaner.You should use a basket/tray in order to prevent damage to the transducers and also protect the tank from scratching. Do not use baskets, trays, racks etc. fabricated from heavy and dense material (including soft material e.g. rubber, wood and fabric) as they will absorb ultrasonic energy and affect the cleaning effectiveness.

How do I clean my ultrasonic cleaner?

Use an appropriate suitable stainless steel cleaning powder if the tank is stained with marks. If the outer sealing compound is marked, wipe over with general purpose cleaner. If a scratch has occurred in the tank, use the finest available sandpaper and carefully polish out the scratch. Clean the tank regularly. After use, rinse out the tank and wipe dry.

What is the warranty?

Soniclean digital benchtop ultrasonic cleaners are guaranteed for a period of two (2) years from date of purchase. All new digital models come in a kit, with essential accessories to ensure ease and effectiveness of use. Additional accessories are also available for purchase.  All other Soniclean products come with a one (1) year warranty from the date of purchase.

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E-mail: sales@soniclean.com.au Telephone: +61 8 8234 8398 Facsimile: +61 8 8234 8391

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Thebarton, South Australia 5031

Telephone: +61 8 8234 8398
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