I first talked about drying a long time ago in the blog called “Don’t Forget Drying.” In that blog, I stressed the importance of drying as a part of the cleaning process. In some cases, changes in the cleaning process can affect drying but, for now, let’s just concentrate on drying. Drying simply means removing liquid … Continued
Dimensions of orifices and typical contaminant scenarios were discussed in preceding blogs. Today, let’s consider the role of ultrasonics in removing contaminants from orifices. First, we’ll consider the “classic” orifice consisting of a passageway through a solid. Then we’ll talk about some special cases which can have an impact on the ability of ultrasonics and … Continued
A few days ago, one of our customers asked one of our sales people what would seem like a very simple question. The question, in paraphrase, was – – “Do you know the relationship between ultrasonic frequency and the ability of ultrasonics to clean within a certain sized orifice.” Being a bit rushed when I received … Continued
In a preceeding blog, I mentioned that pH is a logrhythmic function. As such, each increase of one pH unit represents a ten-fold change in the measured characteristic. This alone can lead to considerable confusion. But it gets worse! Concentration – One would think that pH would be directly related to concentration – – meaning … Continued
Titration is a procedure frequently used to measure the chemical concentration in a liquid. The concept is pretty simple. A specific volume of the solution under test is collected and put into a container which is usually an erlenmeyer flask or a beaker. The container can be glass, plastic or another material. Glass is often preferred because … Continued
In order to maintain process consistency in an industrial cleaning process, it is frequently necessary to monitor the concentration of chemistry in a cleaning solution. pH and specific gravity are two common parameters that can be used to determine the concentration of cleaning chemistries in water. This blog explores ways in which pH and specific gravity can … Continued
One of the more recent developments in minimizing the water left on a part after rinsing is “slow-pull.” Slow-pull is usually applied as the parts exit the rinse that immediately precedes drying. Instead of removing the parts from the rinse at a rapid rate, usually measured in feet per minute (or even feet per second), they are … Continued
Hot air drying applications involve, primarily, the evaporation of water or another liquid such as a solvent from the surface being dried. Evaporation occurs as heated air circulates over and around the surface being dried as discussed in earlier blogs. In all cases this liquid evaporation consumes heat which results in cooling of the remaining liquid. One … Continued
By law, there must be a Material Safety Data Sheet for any material used in any process. The law was instituted, basically, because workers were unknowingly coming in contact with materials that were dangerous not only from a physical standpoint (fire, reactivity, explosivity, etc.) but to human health and well-being as well. Many of today’s … Continued
Let me preface this blog with a disclaimer – – I am not a chemist. My understanding of the subject of pH is only as it relates to industial cleaning, cleaning chemistries and their application. Over the years, I have been associated with many chemists who have been very helpful in their efforts to advance … Continued
