What is a TDS meter, and why should I use it?

A TDS meter measures Total Dissolved Solids in water — minerals, salts, and metals. Knowing your TDS level helps you check water purity, monitor filter performance, and ensure safe water for drinking, aquariums, hydroponics, pools, and more.

What TDS level is considered “good” or safe?

Pure water typically reads 0–50 ppm, while tap water often ranges 50–300 ppm. The lower the reading, the fewer dissolved solids are present. We include a TDS level guide with your meter to help you quickly understand your results.

How accurate is this TDS meter?

Our meter features lab-grade sensors with ±2% accuracy, ensuring highly reliable readings. For the best results, always rinse the probe in distilled water after each use.

Can this meter be used for anything besides drinking water?

Yes! It’s perfect for aquariums, hydroponics, pools, spas, and checking the performance of water filters and RO systems. Any liquid that isn’t oil or alcohol-based can be tested.

Does it come ready to use? Do I need calibration?

The meter comes fully calibrated and ready to use out of the box with extra batteries included. Just remove the protective cap, turn it on, and dip it in the water sample — results appear in seconds.

Product description

At , our journey began with a vision born in the heart of San Diego, CA. We saw a world where the simplicity and accuracy of water testing could profoundly impact health and well-being, not just in our local community but across the globe. Driven by this ambition, we set out to revolutionize water testing.

was founded in San Diego, CA, with the ambitious goal of not only elevating the quality of life for our customers but also impacting lives globally. This endeavor began from a deep-rooted commitment to enhance well-being and safety through reliable water testing solutions, reflecting our dedication to both individual health and global well-being

We provide a seamless and efficient method for ensuring safety, designed for customers who prioritize their health and the well-being of others.

Perfect for testing how safe your tap water is, ensuring peace of mind with 17 essential water quality parameters.

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Ideal for checking water hardness levels at home or on-the-go, helping you maintain the longevity of your appliances and plumbing.

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Essential for maintaining safe and balanced water in your pool or spa with quick and accurate 7-in-1 test strips.

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Safeguard your family by ensuring your tap water is free from harmful contaminants with our easy-to-use and reliable water testing kits

Our partnership with Water For Good allows us to support clean water projects worldwide, fostering healthier communities.

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