I use the following for reference on ultrasonic cleaners. It is primarily for industrial applications and has a lot of good technical information.
http://www.tmasc.com/ultrasonic_cleaning_process.htm It gives a formula for recommended power levels in an ultrasonic cleaner: "Choosing the correct power level for an ultrasonic tank The average Watts per gallon of ultrasonics should be between 50 to 100 Watts. This is the average rating and can be adjusted dependent on the cleaning application. To calculate the power requirements use the following formula; L x(in) W(in) x. (H -2") /231*100=Avg. Watts power. It is important to remember that ultrasonic companies can rate the watts of ultrasonic energy in two ways; Peak & Average. Peak watts are the start up requirement and Average Watts are the continuous operating wattage. Base all calculations on Average Watts." This would mean that for a 2.5l cleaner such as that sold by Harbor Freight, the power of the ultrasonics should be in the 33 to 66 watt range. That puts the Harbor Freight unit at the top of the recommended range. I am not surprised that the heater is included as part of the rating. Harbor Freight is somewhat careful in their description of the product: " Five preset cycles take the guesswork out of cleaning. 160 watts provide more ultrasonic cleaning action. Heated-water function is available when needed for tougher cleaning tasks." Generally, heating improves the cleaning action of the unit and therefore could be considered as part of the " ultrasonic cleaning action". Based on the reference above, I would not expect higher power levels except when the volume of the cleaning tank is larger. But for liposomal encapsulation, the heating is not a desired feature. My guess is that laboratory grade ultrasonic cleaners will not provide any higher Watts per gallon. - Steve N -----Original Message----- From: maniaka rose [mailto:[email protected]] Sent: Thursday, May 20, 2010 5:16 PM To: [email protected] Subject: Re: CS>Sonic cleaners Oh, excellent idea Steve, just excellent. Humidifiers are in abundance in thrift stores. can you comment on the wattage issue? i take it from this post on another list <<<It's really too bad that so many people are fooled into buying this model thinking that the ultrasonic transducer is working with 160 watts of power. It's only 70W, which is twice the power of the small Harbor Freight model (35W). The heater uses about 90W. http://www.lightinthebox.com/09-New-Edition--Digital-2-5-Liters-Ultrason ic-Cleaner-TSLR1030-CD-4820-_p71747.html This is probably accurate as the heaters typically use much more power than the ultrasonic transducer. Even Brooks seems to think it's 160W (according to his comments). Harbor Freight's current ad states: "160 watts provide more ultrasonic cleaning action". Many models sold to dentists and doctors for hundreds of dollars more only use around 50 to 100 watts for the cleaning function. >>> thanks so much Steve for your reply, rose -- The Silver List is a moderated forum for discussing Colloidal Silver. Rules and Instructions: http://www.silverlist.org Unsubscribe: <mailto:[email protected]?subject=unsubscribe> Archives: http://www.mail-archive.com/[email protected]/maillist.html Off-Topic discussions: <mailto:[email protected]> List Owner: Mike Devour <mailto:[email protected]>
