Knowledge Level: Advanced 

Read Time: 3-4 Minutes

In the world of coffee brewing, consistency is the key to unlocking a memorable cup. To achieve this, various factors come into play, from the grind size to water temperature. One element often overlooked is Total Dissolved Solids (TDS), a crucial aspect measured by a TDS meter. In this blog post, we'll dive into the importance of TDS and how using a TDS meter can help you maintain coffee consistency.

What is TDS?

Total Dissolved Solids (TDS) refers to the concentration of all soluble substances present in your coffee. This includes coffee flavors, oils, and small coffee particles that have dissolved into the water during brewing. TDS affects not only the strength but also the taste, texture, and overall quality of your coffee.

Why Measure TDS?

Understanding TDS levels will help you brew coffee with a balanced flavor, aroma, and body. Too low a TDS level can result in a flat, watery cup, while too high a TDS level can lead to a brew that's overly strong and bitter.

How Does a TDS Meter Help?

A TDS meter is an instrument used to measure the TDS level in a liquid. When applied to coffee brewing, it offers several benefits:

  1. Quality Control: It allows you to maintain a consistent quality by eliminating the guesswork from the brewing process.
  2. Efficiency: With a TDS meter, you can instantly adjust your brewing variables to get your desired flavor profile, without the trial and error.
  3. Expertise: Understanding your TDS readings can help you become more knowledgeable about coffee brewing, making it easier to explain the intricacies to your customers or friends.

How to Use a TDS Meter

Using a TDS meter is straightforward. Take a sample of your brewed coffee and place it in a clean container. Insert the meter into the liquid, and it will give you a reading. This reading is generally given in parts per million (ppm), indicating the TDS concentration. Use this data to adjust your brewing variables as needed.


A TDS meter is an invaluable tool for anyone serious about their coffee. Whether you're a professional barista or a coffee enthusiast, using one can dramatically improve the consistency and quality of your brews. So the next time you find your coffee lacking that 'wow' factor, maybe it's time to consider checking its TDS level.