Forgot Password?   Create Account

pH and ORP Measurement: Understanding the Difference
Monday, July 8, 2019

Do the words pH and ORP measurement sound like a foreign language to you? They shouldn’t be because understanding the importance and difference between these measurements is absolutely crucial for a wide variety of industries.

To put it simply, both measure the quality of water, and that measurement is crucial for industries such as food and beverage, construction, manufacturing, and agriculture. Is your company in one of these industries? Then read on for a greater understanding of these measurements.

What Is a pH Measurement?

pH measures a solution’s acidity or alkalinity on a scale from 0 to 14: 7 is neutral, anything less than 7 is acidic, and anything greater than 7 is alkaline (basic). It’s also typically shown as a colorful scale with red being acidic and magenta being alkaline.

It is measuring the ratio of positively charged hydrogen ions in the water versus negatively charged hydrogen ions - when there are more positively charged hydrogen ions, the water is acidic, and vice versa.

What Is an ORP Measurement?

ORP is short for oxidation-reduction potential, also known as REDOX, which means the degree a substance is capable of oxidizing or reducing another substance. This is measured by millivolts (mV) on an ORP meter, or a REDOX sensor.

A substance is an oxidizing agent when there’s a positive ORP reading on the meter, and it’s more oxidizing the higher the meter reading is. This substance is losing electrons, so oxidizers enable it to accept electrons from other sources.

A substance is a reducing agent, or an anti-oxidizing agent, when the ORP reading is negative. The substance is more anti-oxidizing as the reading becomes lower. Reducers give the excess of electrons in this substance to other substances that are losing them.

Why Are These Measurements Important?

Water needs to be carefully monitored at all times because bad water quality can seriously impact a business’s operations. The water quality you need to achieve all depends on your company’s industry.

Fortunately, water is able to be chemically altered to meet any kind of quality criteria that are required for your company, and if you’re able to do this consistently your business operations will improve.

A common risk that most people don’t think of is equipment damage from the water’s pH and ORP, or dissolved oxygen content - this is a risk for all industries. For the food and beverage industry in particular, low-quality of water will have negative impacts on the food product’s taste, even impacting the texture, color, and smell.

Wrapping Up

As you can hopefully see by now, monitoring the pH and ORP measurement of water is incredibly important for the long term success of your operations. Without consistent, accurate monitoring, your products or food items won’t meet quality standards.

Analytical Technology provides the Q46 platform of monitoring equipment, which is our latest generation of monitoring and control systems. Ready to invest in one of the highest quality water monitoring instruments available to create a safe, healthy environment for your company? Contact us today to speak with a representative!

View All Recent Posts