Why is Sutro Better: The Gold Standard in Water Testing

The Gold Standard for Over 100 Years

Reagent based testing or dropping chemicals into a tube of water is the gold standard for water testing. Every single time you pull out your pool test kit, stick your hand up to your arm to get a sample and put five drops of phenol into it, you’re performing the most accurate way to measure the chemicals in water. It’s been done that way for over 100 years.

Reagent based testing is how every single water company, the FDA, the EPA, and anyone who wants an accurate and reliable measurement does it. Honestly, it’s how our drinking water is measured. It’s time-consuming and usually takes a human to perform (even if put into a machine like a Spin Touch) but it’s the best way to do it, hands down.

We Use the Best Reagents

Our reagents come from our partner, LaMotte, who has been testing water for over 100 years. This partnership means that all of our pH, Free Chlorine, and Total Alkalinity can be verified by the LaMotte Spin Lab.

When you go into your local pool store, it’s usually the LaMotte Spin Lab that tests your water. Since we use the exact same process and reagents, our measurements will match your local pool store measurements. That’s important because now everyone is on the same page and can give you the best recommendations to treat your pool (or spa).

    An app that tells you exactly what chemicals to add to your pool and when!

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    Reason #1: Our results will (almost) always match your local pool stores.

    What You Get for $699

    We know that it’s important to test your pool (or spa) water regularly to ensure that it’s crystal clear and ready for a swim. An investment in a Sutro Smart Monitor will ensure that you’ll always be ready for a swim. Here is what you get when you invest in the best pool (and spa) water testing robot:

    • Monitor + Hub + 2 rechargeable Monitor batteries.
    • Automatically measure pH, Chlorine, and Alkalinity 3 times a day
    • One Year of cartridges (shipped monthly) + monitoring
    • iOS + Android App
    • Expert treatment recommendations based on Your Chemicals.
    • 60-day no-hassle money-back guarantee
    • Phone + Email Customer Support
    • Access to exclusive Sutro’s Cabana Club Facebook Group
    • Lifetime warranty

    Join the top 10% of pool owners who demand precision monitoring to keep their pools and spas safe, stable, and crystal clear.

    Purchase Your Sutro Pool Monitor NOW!




    Don't know what chemicals to add or when? Sutro will tell you!

    With Sutro you’ll save time, cost and effort while keeping your pool chemicals in balance, even if you don’t know what you are doing, the Sutro app will help you out telling you what to do.