Mark's Blog

The Connection Between pH and ORP - What You Don't Know Can Hurt You.

The two most basic measurements in water quality, pH and ORP, are inextricably connected. The...

The Connection Between pH and ORP - What You Don't Know Can Hurt You.

The two most basic measurements in water quality, pH and ORP, are inextricably connected. The...

The Story Behind the 2250 Controller

I promised myself I would not make use of my blog for blatant promotion of our products. That...

The Amazing and Miraculous Slicing and Dicing Splicesome

Several months ago a blogging expert told me that I needed to write content that is more...

How a New Contractor Model Can Change the Way We Develop New Products

I can now admit it. My company lost $400,000 on two engineering projects that went nowhere. Both...

I finally figured out how a dissolved oxygen sensor works

The title of this blog looks like a self-inflicted wound. It suggests that I am ignorant about...

The Joy of Jargon

Every profession has its fill of technical jargon that few outsiders understand. Since war paint...

What I learned from Radio Shack (RIP)

I am old enough to remember the Radio Shack that was really a radio shack. This was the place...

Color, Turbidity and Philosophy

When we humans look at objects we describe them in terms of color. We say that an apple is red...

Why Colleges have Failed our Kids

My company has had a fruitful relationship with the University of Massachusetts of Lowell since...

The Biggest Misconception in pH Measurement

The pH probe is the most ubiquitous analytical sensor on earth. Even people who never took a...

What Would Marcus Do?

What do women's clothing, Key Lime pie and toys have in common? They are all businesses that...

The Green Way and the Gray Way

I love trade journals. I subscribe to about a dozen devoted to water and wastewater. I firmly...

Why It took four weeks to write two paragraphs

I'm really under the gun. I am writing a book on how water quality instrumentation works and it...

What I Learned from Apple - The Good, the Bad and the Wild Horse

I've been a Mac user since 1986. I plunked down about five grand for a Mac II with a 13" monitor...

What I Learned from Apple - The Good, the Bad and the Ugly

I've been a Mac user since 1986. I plunked down about five grand for a Mac II with a 13" monitor...

Today's Batteries — They're (Much) Older than You Think

Last year I visited the Thomas Edison National Historical Park in New Jersey with my college...

The Difference between pH and ORP - Take Two

The writing of my book How Instrumentation Works has been the driving force behind most...

Why innovation is not always easy

Just about everyone I know has either read the Steve Jobs biography by Walter Isaacson or has...

The Most Amazing Example of "Rugged and Reliable" You Will Ever Find

I purchased Aquametrix over 3 years ago because of the reputation of the company for making...

The Best Way to Really Learn Something....

... is to write a book. No doubt you already know that, if you want to insure that you...

Update on the 2400

It's been over a year since we announced the imminent arrival of the Mother of all...

My Great American Novel

I always wanted to walk into a cocktail party and nonchalantly toss off the phrase "I have...

Does anyone know how a pH probe works?

It's the most common, the oldest and the simplest measurement made in all of electrochemical...

The Amazing 4 to 20 Signal (or why "old" doesn't always mean "obsolete")

I'm old enough to remember how a rotary phone worked and brilliant enough to know that it is...

Welcome to my blog

Welcome to my blog.

I didn't do this willingly. Were it not for a friend of mine who was...

Big ORP Article in Water Online

Last month Treatment Plant Operator published an article based on a white paper by Mark Spencer...