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|Ultrasonic Cleaners, How do Ultrasonic Cleaners work? What is cavitation?|
|Ultrasonic cleaners are used to dislodge fine
that other cleaning methods may not be able to reach or remove. Ultrasonics are not
designed as washers.
It would be contrary to expectations to try and clean grossly dirty instruments with an ultrasonic cleaner. Items to be ultrasonic processed must be pre-cleaned.
OSHA intends a distinction between "droplets" and "aerosols"
"Splattering of blood onto skin or mucous membranes of the face and upper respiratory tract against large droplet splattering is needed. ...glasses, goggles, face shields, and surgical masks...as appropriate to the task being performed, can provide that protection." OpCit p.51
Pseudo-scientists put some "marker-dye" in an ultrasonic and observed the "marker dye" was "aerosolized" and deposited on surfaces away from the ultrasonic. They concluded erroneously that covering the ultrasonic was necessary to prevent the spread of pathogens. The conclusion is not demonstrated by the experiment.
The emphasis by OSHA is to encourage the establishment of procedures that prevent the initial problem before focusing on protection, i.e., work practices and engineering controls.
"Paragraph (d)(2)(xi) requires that all procedures involving blood or other potentially infectious materials shall be performed in such a manner as to minimize splashing, spattering, and generation of droplets of these substances."
"The hierarchy of controls provision, paragraph (d)(2)(i), of this standard requires employers to implement engineering controls and work practices prior to relying on personal protective equipment for protecting employees against exposure" OSHA
Cavitation is the term used to describe the mechanical
effect that occurs when high frequency sound waves are
introduced into a solution.
Plain water does not cavitate strongly.
Cost-effective Alconox powder is the oldest preferred cleaner because it rinses clean
without leaving residue. It is used in technical applications, medical
environments and by tattoo and piercing.
Disposal of used liquid.
It is a violation of OSHA regulations to dispose of untreated contaminated liquids into the sewage system.
It is our opinion that unless you are a Central Service Department or have special facilities to reprocess contaminated tools that can meet hospital standards, you should use disposables. Re-processing in retail environments cannot be justified. Using disposables is the way to go.
Ultrasonic Cleaners, How do Ultrasonic Cleaners work? What is cavitation? Elecrowave Ultrasonics, Grobet, Fabulustre, Sonic, Sovereign Ultrasonic