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Trial Number 2

Trial Purpose:

To evaluate selected product on cleaning supplied stainless steel filter

Date Run:


Experiment Procedure:

One product was selected from the previous trial based on performance. The product was used at 10% diluted with DI water and was used at room temperature. The solution was used in a 40 kHz Branson 3510 ultrasonic unit after being degassed for 5 minutes.

The filter was totally immersed into the ultrasonic tank and cleaned for 20 minutes. Observations were made at five-minute intervals. Following cleaning, parts were rinsed with a DI water spray for 2 minutes at room temperature. The cleaned part was dried with compressed air at room temperature for 3 minutes.

Parts were photographed before and after cleaning. The cleaning solution also was photographed to help determine if the filter was being cleaned.

Trial Results:

Signs of effective cleaning were made within the first 5 minutes of cleaning. The part looked clean after the 20 minutes and the cleaning bath was very dark. Observations are listed in the table.

Time Observation
5 min Solution turned cloudy and had a slight grey tinge to it.
10 min Solution turned darker. The part still had a fine film on the outer surface. It could be easily wiped off or removed with a spray rinse.
15 min Most of the observed film was removed
20 min Part looked clean. Bath water was very cloudy and the bottom of the tank could not be seen.

Success Rating:

Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.


The Valtron SP 2700 kb appeared to have good cleaning ability of the contaminant using ultrasonic cleaning. The part will be sent to client for final inspection and pressure testing.

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