Ella hydrogen therapy is a generator and pump installed under the molded seat of the tub, fed from a distilled water tank, that injects molecular hydrogen into the bath water through a single jet below seat level at the push of a button. Ella's published page states that the water reaches 1500 ppb of hydrogen by the time the tub fills to the drain overflow and may rise to 2000 ppb during an extended bath of 15 to 20 minutes. Ella's test video measures 2.2 ppm on its sample tub, and the two figures sit comfortably together once you convert units: 1000 ppb equals 1 ppm. This page answers the questions customers ask most about Ella hydrogen therapy.

PPB and PPM, Side by Side

• 1500 ppb, which is 1.5 ppm. The concentration by the time the tub fills to the drain overflow, per Ella's hydrogen therapy page. The Standard60 spec sheet states the same 1500 ppb figure after 5 minutes of operation.
• 2000 ppb, which is 2.0 ppm. The level the water may rise to during an extended 15 to 20 minute bath. The page describes the generator as delivering micro and nano bubble hydrogen at concentrations exceeding 2000 ppb.
• 2.2 ppm, which is 2200 ppb. The measured result on the demonstration tub in Ella's titration video, and the ceiling Ella says it will guarantee, up to, per the test results shipped with each tub.

The published page is the operating specification; the sheet that ships with your tub is the authoritative number for your unit. Every hydrogen tub is individually tested for hydrogen production before it ships and comes with verifiable test results. The 2.2 ppm figure is an up-to guarantee verified per unit, not a promise for every bath.

The video shows the test. A 6 mL water sample is dosed with drops of a blue reagent that turns clear in the presence of dissolved hydrogen. With regular tap water, the first drop stays blue, which indicates 0.1 ppm of hydrogen or less. With water from an Ella walk-in tub fitted with the hydrogen generator, drop after drop turns clear as the dissolved hydrogen is consumed, until the twenty-second drop finally stays blue. That is the titration end point, and 22 drops corresponds to 2.2 ppm of dissolved hydrogen. The video closes by noting that any Ella walk-in tub can be outfitted with a hydrogen generator, that Ella will guarantee levels of up to 2.2 ppm, and that every hydrogen tub comes with verifiable test results.

How the Hydrogen Is Made and Delivered

The Ella hydrogen system combines microbubble and hydrogen therapies in one unit. The hydrogen pump and generator are typically installed beneath the molded seat of the walk-in tub. A distilled water tank connects to the generator, which produces the hydrogen and injects it into the bath water as micro and nano bubbles through a single jet below seat level. Because the hydrogen is delivered as nano bubbles, it stays in the water longer. You activate it with a simple on/off push control once the water level is above the hydrogen inlet jet; our water level guide shows the fill for every system. The fast-fill faucet fills an average tub within 7 to 10 minutes, and the concentration climbs as the tub fills and continues to rise during the bath. In its overview video, Ella describes itself as the only tub manufacturer with a built-in, integrated hydrogen delivery system.

This overview introduces the therapy. Inspired by researchers including Nobel laureate Dr. Yoshinori Ohsumi and Dr. Shigeo Ohta of the Molecular Hydrogen Institute in Japan, the system infuses bath water with molecular hydrogen gas as billions of nano bubbles with one touch of a button. It lists the potential benefits that have been studied, such as neutralizing free radicals, muscle recovery, skin health, stress reduction and mood, and repeats that each tub is tested before shipping, that levels of up to 2.2 ppm are guaranteed with verifiable results, and that the generator can be configured on its own or combined with Ella's other jetting packages. Ella's hydrogen content is not medical advice and is not intended to diagnose, cure or prevent any disease. Our warm-water bathing guidelines cover safe temperatures and soak times for any therapy.

Distilled Water

Yes, the tank must be filled with distilled water. On the Standard60, the setup printed on the spec sheet is: cut the ties and remove the container from under the tub, take the hose from inside the tank and connect it to the front of the tub, and fill the blue tank with distilled water. Our dedicated Standard60 H2 and microbubbles article covers that model's tank and hose in detail.

Which Tubs Can Have It

The Standard60, 30 by 60 inches, is the model offered with the H2 and Microbubbles System as a catalog option; see the Standard and Standard60 profile. Ella's hydrogen page also states that the system can be custom installed in other Ella's Bubbles walk-in tubs, and in selected standard bathtubs, as a special order, provided there is adequate space beneath the tub's deck, and that it can be paired with other jetting packages. Whether your tub, new or already installed, has the space is a question for your Ella dealer or the team at (800) 480-6850. Our guide to therapy combinations by model shows how the other systems fit together.

Common Questions

For anything model-specific, open a ticket at ellasbubbles.com/support or call (800) 480-6850 and the team will be glad to help.