Just about everyone can recognize the benefits of sterilization to eliminate bio-burden in a plumbing system. Heat or chemicals toxic to living organisms are periodically introduced to kill the offending critters. This process can be conducted using either CIP (Clean In Place) or COP (Clean Out of Place) procedures. CIP simply means cleaning by flushing … Continued
“Electropolishing,” (often shortened to E-P) is a term frequently heard in cleaning circles. Electropolishing of surfaces of cleaning equipment is employed to provide enhanced cosmetic appearance and, more importantly, to enhance their functionality. What is Electropolishing? – Electropolishing is a lot like electroplating except in reverse. In electropolishing, metal is removed rather than added as … Continued
As I have said before on this blog, I am not a chemist. Whatever I say about chemistry on the blog is expressed in layman’s terms and is based on practical experience and not on any deep understanding I have of the properties of chemicals. The usefulness of any information provided here applies only to … Continued
“Splitting” of oil from a surface as described in a preceding blog is a part of nearly any oil removal process. Note – Even cleaning chemistry that is generally classified as an “emulsifier” has ingredients to promote the initial “splitting” of the oil from the surface being cleaned. These ingredients are often called “surface active … Continued
In some cases, previously described oil removal technologies based on the gravity separation of oil from the cleaning solution are unjustifiably cumbersome and expensive. Fortunately, smaller scale solutions are available for use in such applications. Oil Skimmers – Oil skimmers utilize a material which preferentially attracts oil (hydrophobic) to skim floating oil from a surface … Continued
I have spent considerable time on the blog disclosing and discussing a variety of cleanliness testing methods. A couple of tests that escaped earlier discussion, however, are the “white glove” test and the closely-related “swab” test. These tests are conducted by rubbing or wiping a surface using a white (usually cotton) glove or a cotton … Continued
Note – The following blog is adapted from a paper recently written by Timothy Piazza, President of Blackstone-NEY ultrasonics and is re-printed here with his permission. This would probably be a good time to mention that guest blogs or suggestions for blog topics are always welcome. My email is jfuchs@ctgclean.com. FJF Blackstone~NEY Ultrasonics – Sweep … Continued
As described in a preceding blog, changing ultrasonic frequency has a demonstrated effect on the size of particles removed from a contaminated surface depending on frequency. Low frequencies produce large cavitation bubbles which implode with high energy. High energy implosions are able to dislodge relatively large particles from a surface. Higher frequencies produce smaller cavitation … Continued
The blog about maximizing the effect of multiple frequency ultrasonics explained in some detail the mechanics of cleaning using multiple ultrasonic frequencies and the benefits of sequencing through a series of frequencies multiple times to achieve maximum cleaning effect. This blog will further explore these benefits especially in cases where extended exposure of a part … Continued
In preceding blogs I have identified temperature as probably the single most important variable in a cleaning process. Devices that sense and control temperature, therefore, are a critical part of a cleaning system. Let’s take a quick look at a few of the types of temperature sensors that are available and suggest where each is applicable … Continued
