Categorized | Liquinox, Medical Device, Solujet

Ultrasonic with Low-Foam Detergent

Q. We are having foaming issues in ultrasonic cleaner. Basically, we are looking for a non-foaming version of the Liquinox® cleaner we are currently using.

A. Depending on what the foaming issue is, you may be able to continue using Liquinox™ Critical Cleaning Liquid Detergent.  As a general statement, that which makes foam emulsifies well, and that which emulsifies well works well in ultrasonic cleaning.  If the foam is coming from degassing the solution, you may find that if you turn on the tank and de-gas it before you add the Liquinox detergent, you will not have a foaming problem.  

If the foam is coming from a spray rinsing process, then a quick static soak dip in between the ultrasonic cleaning and the spray rinsing can reduce the amount of Liquinox® dragout in to the spray rinse process, such that you will not have problems with foam.  

If there is some other foam problem that cannot be avoided, then I would recommend using low foaming Solujet™ Low-Foaming Phosphate-Free Liquid in the ultrasonic cleaner.  The detergent contains chelating agents that can help remove salts, oxides and other inorganics, as well as high alkalinity for alkaline hydrolysis of organic residue.

If you’d like to try a sample of Solujet detergent, please fill out the questionnaire to Request a Sample.  For more information about Liquinox®, consult the Technical Bulletin or SDS.