Nexis Professional Hydrogen Water Bottle, 9.5oz Tritan

Name: Professional Hydrogen Water Bottle | 3rd-party Certified | Ocemida Nexis
Brand: ocemida
SKU: Nexis
Price: 279.0 USD
Availability: InStock
Rating: 4.83 (24 reviews)

4.83

✦

Highly rated by customers for: Performance, Build Quality, and Overall Reliability

$279.00 USD

#1 Best Seller

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8,700 PPB lab-verified peak in 10 min
Pure & Toxin-Free - BPA/BPS/PFOS/PFAS-free, independently third-party tested
Open Membrane Design - No "Star of Stench" and with large bottle opening for ease of cleaning

Color: Black

Quantity

In stock!

Delivery expected as fast as Tomorrow (Sat, Sep 26)

SHIPS FREE FROM USA, CA
60-DAY RETURNS
LIFETIME WARRANTY

Ocemida Nexis customer reviews

8,700 PPB hydrogen water, proven by independent labs

Fill it with purified water, press one button, and drink hydrogen-rich water in 5 to 10 minutes. No app, no subscription, no filters to replace. Molecular hydrogen is a selective antioxidant studied for its effects on energy, exercise recovery, and oxidative stress.

H2 Analytics Tested

H2HUBB Tested

PFAS-Free (Eurofins)

CE Marked

GRAS Materials

8,700 PPB

Tested by two independent labs. Reports are public.

Most brands publish hydrogen numbers they measured themselves. We sent the Nexis out. H2 Analytics USA, an official lab of the International Hydrogen Standards Association, measured it by gas chromatography (Report H2AR-260616-1). H2HUBB confirmed it with a Unisense microsensor. The result is one of the highest concentrations ever recorded for a hydrogen water bottle.

Seen a similar-looking bottle for less? Ask the seller for an independent lab report and a lifetime warranty. Ours take one click.

Ready in 3 steps

1Fill

Purified, distilled, or reverse osmosis water, up to the fill line.

2Press

Choose a 5 or 10 minute cycle on the OLED display.

3Drink

Drink it fresh, while hydrogen is at its peak.

No "Star of Stench." Nothing hidden.

Ocemida open membrane vs competitor membranes hidden behind plastic star reinforcement

Most hydrogen bottles hide the membrane behind a star-shaped plastic reinforcement. Moisture gets trapped underneath, and that is where bacteria and mold grow where you cannot see them. Owners know it by the smell.

The 8th-generation Nexis removes it entirely. With our Open Membrane Design, the membrane is fully exposed, so you can see it, clean it, and check its condition every day. No hidden cavities. No guessing what you are drinking from.

Ocemida wide bottom opening vs narrow competitor openings

Easy to keep clean. A wide bottom opening and oversized gasket keep it leak-proof and let you reach every surface, unlike narrow-neck designs you can never fully get into.

Want more than 9.5oz? Use an Evian bottle.

The integrated adapter screws directly onto Evian bottles (330ml, 500ml, and 1L), so you can make hydrogen water at your desk, at the gym, or on the road without carrying a second bottle.

Nexis vs. typical hydrogen bottles

	Ocemida Nexis	Typical bottle
Hydrogen level	8,700 PPB, verified by IHSA accredited lab	Self-reported, often no report
Membrane	Open, visible, easy to clean	Covered by plastic star
Membrane contact with water	Isolated by a platinum-iridium layer	Direct contact
Housing	Reinforced metal	Plastic
Warranty	Lifetime limited	Often 1 year
Repairs	Free repairs and exchanges (USA and Canada)	Replace the whole bottle
Support	Real people by phone, text, and email	Overseas email only

Engineered for output, safety, and daily use

Reinforced high-pressure cell

Higher pressure dissolves more hydrogen into the water. This is how the Nexis reaches concentrations most bottles cannot.

Pressure release valve

Controlled gas release protects the membrane and holds dissolved hydrogen at peak concentration, safely.

Dual chamber + vent

Chlorine and ozone byproducts are expelled through a bottom vent so they never end up in your water.

Near-UV self-cleaning

A 405nm blue light helps keep water fresher for longer. Platinum-iridium membrane, certified free of PFAS and heavy metals.

Tritan bottle

Pressure-resistant 9.5oz (280ml) BPA-free Tritan bottle with extra-thick walls.

Rechargeable battery

Built-in 1650 mAh battery: up to 8 five-minute sessions per charge, fewer on 10-minute cycles. Charges from any standard 5V USB charger.

OLED display

Battery level, time remaining, and one-touch 5 or 10 minute cycles. No app or Bluetooth needed.

Built to last

Reinforced metal housing resists drops, impacts, and wear through thousands of uses.

What's in the box

Nexis hydrogen generator with 9.5oz Tritan bottle and integrated Evian adapter
USB charging cable (wall charger not included)
PEM membrane guard
User manual

Try the Nexis risk-free

60-day returns. Use it daily for two months. See the return policy for details.
Lifetime limited warranty. Activate it within 30 days of delivery. Free repairs and exchanges in the USA and Canada.
Real human support. Email support@ocemida.com or text +1 (833) 526-5033.
A Canadian company since 2019, with offices in Montréal, New York, London, and Warsaw.

Getting Started with Nexis | User Manual | PFAS-Free Report (Eurofins) | H2 Analytics Report | H2HUBB Report

Recommended use

Drink 1–3 bottles of freshly generated hydrogen water daily, ideally on an empty stomach or 30 minutes before meals, for optimal absorption. Use distilled, reverse osmosis, or purified water only to protect the PEM membrane and ensure maximum hydrogen concentration.

Care guide

Rinse after each use and disinfect twice weekly with Ocemida’s cleaning solution. To maintain performance, keep the membrane moist at all times by either sealing it with the membrane plug or leaving a small amount of water inside the bottle.
Do not wash the bottle with an abrasive sponge.

Shipping

We are shipping daily from USA, Canada and EU and you can select your desired service (where available). When ordering multiple products or bundles, some items may arrive in separate shipments because they are stocked in different locations - however, if both products are available in the same country, they will be shipped together as a bundle from that location. For example, if you purchase an Ocemida Nexis with accessories, the device may ship first with the US expedited method, while the accessories will arrive a few days later, as they are dispatched from Canada. If inventory is not available in EU, the product will be shipped from Canada and you will be charged shipping and customs fees. Please note that the delivery estimates shown at checkout may not be accurate during holidays or major sales events (such as Black Friday) due to high order volumes and carrier delays.

International Orders

We do not cover charges associated with international imports. Please consult your customs office for an estimate of these fees. In most cases, we ship international orders with UPS, and they will handle the customs fees for you. If you want to avoid UPS specifically, please contact us so we can look for alternatives, but this doesn't guarantee avoiding the customs fees.

Please note that orders shipped within the EU are not subject to customs duties or import fees, as the EU operates as a single customs territory. However, if you are an EU-based customer ordering multiple products, please be aware that if all items in your order are available in the same non-EU location (such as Canada or the USA), they may be bundled and shipped from that location. In this case, standard import duties and customs fees will apply upon arrival.

You may be subject to an International Service Assessment (ISA) fee. This fee is not charged by us but may be charged by your bank or credit card issuer for making an international transaction. The ISA fee is typically around 1% to 3% per transaction. This fee does not apply to transactions made within the EU using Euro-denominated accounts.

Warranty

This item come with a Lifetime Limited Warranty guarantee.
Free repairs and exchanges for orders in the USA and Canada.

View full details

Benefits That Go Further

⠀

Brain health

DNA repair

Gut barrier integrity

Selective antioxidant

Brain health

Hydrogen-rich water has shown promise in preliminary studies* for potentially supporting brain health through its antioxidant and anti-inflammatory properties. Some research suggests that molecular hydrogen may help protect neurons from oxidative stress, potentially improving cognitive function and reducing the risk of neurodegenerative disorders, though more comprehensive human trials are needed to confirm these effects.

*ncbi.nlm.nih.gov/pmc/articles/PMC9979207

DNA repair

There have been some studies* investigating the potential effects of molecular hydrogen on DNA, including possible DNA repair mechanisms.
Preclinical research suggests hydrogen might reduce DNA oxidative damage but human effects are not yet proven.

*pubmed.ncbi.nlm.nih.gov/33925430

Gut barrier integrity

Studies* suggest that the molecular hydrogen in hydrogen-rich water may help strengthen this barrier by reducing oxidative stress and inflammation in the gut lining. This could potentially prevent the leakage of harmful substances into the bloodstream, a condition known as "leaky gut."

Based on preliminary research, hydrogen water may support the growth of beneficial gut bacteria, further contributing to a healthier gut environment.

*ncbi.nlm.nih.gov/pmc/articles/PMC10871146

Selective antioxidant

As the smallest molecule in the universe, H2 can easily penetrate cell membranes and access intracellular compartments, including mitochondria. Its antioxidant action is thought to be selective, primarily targeting highly reactive oxidants like hydroxyl radicals and peroxynitrite without interfering with beneficial reactive oxygen species involved in cell signaling.

pubmed.ncbi.nlm.nih.gov/21226992

learn more

How We Made a Better Hydrogen Water Bottle

Most hydrogen water bottles on the market share the same fundamental design. They work, but they come with tradeoffs: difficult cleaning, membrane materials in contact with drinking water, and internal structures that degrade over time. We designed Ocemida to solve these problems.

The Technology Inside

Ocemida uses SPE/PEM electrolysis with platinum and iridium-coated titanium electrodes.

What makes Ocemida different is the engineering around that core. The electrolysis chamber features a conical cavity geometry that accelerates oxygen venting during the hydrogen generation cycle. Oxygen bubbles release faster and more completely, which does three things: maintains consistent hydrogen output, reduces stress on the membrane, and prevents the pressure fluctuations that cause leaking in other designs.

The result: 8,700 PPB hydrogen concentration in just 10 minutes. You can also run shorter 5-minute cycles for a quick boost or extended 15-minute cycles for maximum saturation of 10,000 PPB.

Why Membrane Isolation Matters

Here's something most brands don't talk about: in conventional hydrogen bottle designs, the PEM membrane sits in direct contact with your drinking water. PEM membranes are typically made with PFAS-based compounds - the same "forever chemicals" that have raised health concerns in cookware, food packaging, and water supplies.

Ocemida uses a platinum-iridium felt diffusion layer that creates a physical barrier between the electrolysis chamber and the water you drink. Hydrogen passes through. Membrane materials don't. This isn't a marketing feature - it's a fundamental safety improvement.

Designed for Daily Use, Not Just Lab Conditions

If you've owned a hydrogen water bottle before, you know the problem: a narrow opening, intricate internal parts, and surfaces you can't reach to clean. Mineral deposits build up. Bacteria find places to grow. Performance drops. Eventually something cracks or leaks because you were trying to clean it properly.

Ocemida products have a wide-mouth opening that gives you full access to the interior. No special brushes. No disassembly. No hidden crevices. You clean it the same way you'd clean any water bottle, and it stays hygienic without the maintenance headaches that plague other designs.

The pressure relief system is integrated into the cap assembly - not dependent on fragile internal seals that wear out. This keeps the bottle safe during electrolysis while eliminating the most common failure points.

Quality You Can Verify

We test every claim. The hydrogen output is certified by H2 Analytics, an independent lab for IHSA, specializing in hydrogen concentration measurement. We don't ask you to trust marketing copy - we give you third-party verification.

Every unit undergoes quality inspection before shipping. Electrodes are checked for coating integrity. Seals are pressure tested. Electronics are validated. We document everything because we stand behind what we sell.

Who This Is For

Ocemida is for people who want hydrogen water without the compromises: without PFAS exposure, without bottles that are impossible to keep clean, without designs that fail after a few months of real use.

If you've been researching hydrogen water bottles and found yourself frustrated by vague claims and recycled marketing language, Ocemida is what you've been looking for.

learn more

Questions & Answers

Can't see your question?

Where do you ship from?

We are shipping every day from USA, Canada and EU. You can select your desired service. Standard shipping is free in the USA (USPS) and Canada (Canada post)

You can request a signature on delivery.

International orders:
We do not cover charges associated with international imports.

You may be subject to an International Service Assessment (ISA) fee. This fee is not charged by us but may be charged by your bank or credit card issuer for making an international transaction.
The ISA fee is typically around 1% to 3% per transaction.

Do i need to change or to replace anything in a hydrogen water bottle?

There are no filters or parts to be replaced in a hydrogen water bottle.

How long does the hydrogen concentration last in the bottle?

The hydrogen concentration in an unopened bottle can remain stable for up to 24 hours. However, once the bottle is opened and the pressure is released, the hydrogen content begins to decrease. The rate of decline is approximately 500 parts per billion (PPB) per hour.
Read more on our blog:
https://ocemida.com/blogs/hydrogen-water/how-long-does-hydrogen-water-bottle-last

What kind of USB charger can be used?

A standard 5V charger rated at 1A or 2A can be used. Avoid fast chargers (typically marked with a lightning bolt icon).
You can read more here:
https://ocemida.com/blogs/hydrogen-water/how-do-i-charge-my-hydrogen-water-bottle

What makes this PEM safe?

Featuring a Platinum-iridium top layer, this membrane offers exceptional performance and is free from harmful chemicals.

The advanced Solid Polymer Electrolyte (SPE) and Proton Exchange Membrane (PEM) technology play a crucial role in the hydrogen generator. Through a sophisticated electrolysis process, this technology efficiently splits water into hydrogen and oxygen gases. The resulting hydrogen gas is then infused into the water, producing antioxidant-rich, energy-giving water with maximum bioavailability.

During this process, the system effectively expels any byproducts such as Ozone, Hydrogen Peroxide, Chlorine and Hypochlorite ion ensuring the purity and safety of the water. This integration of cutting-edge materials and technology not only enhances performance but also ensures the water is both potent in its benefits and safe for consumption.

What kind of water can be used?

Purified, distilled or reverse osmosis water should be used with this device for maximum performance.

Why is the bottle so small, can you make it bigger?

Hydrogen water bottles are intentionally small for several key reasons:

Concentration efficiency: Smaller volumes of water allow for higher hydrogen concentrations. This means you get more hydrogen per milliliter of water, maximizing the potential benefits.

On-demand supplement: These bottles are designed to be portable hydrogen generators rather than primary water sources. They produce a concentrated dose of hydrogen-rich water for supplemental use.

Distinction from regular bottles: The compact size differentiates hydrogen water bottles from standard water bottles, emphasizing their specialized function.
Optimal consumption: The smaller size encourages drinking the hydrogen-rich water soon after generation, when hydrogen levels are highest.

Practicality: A smaller bottle is more convenient to carry and use throughout the day for periodic hydrogen water consumption.

Read more here:
https://ocemida.com/blogs/hydrogen-water/science-behind-small-hydrogen-water-bottles

Why the Nexis doesn't come with a charger?

Most people already have compatible chargers at home.
The Nexis works with standard USB chargers rated between 1A and 3A - the same type commonly used for phones and other everyday devices.

Can't see your question?

Don't forget these essentials

5 stars: 21 (88%)
4 stars: 2 (8%)
3 stars: 1 (4%)
2 stars: 0 (0%)
1 star: 0 (0%)

Great

Great product

I love this thing

I love this thing. My eGFR went from 78 to 86 in 6 months. I only use this for my water.

So far so good, like the 9 oz volume

I've only had this for about a week, so my preliminary review finds that it actually does not leak! The battery does not last as long as they state; seemed like only 3 days' worth of use got it down to one bar. Most of the time, but not all the time, it "pops" when I open the top; I guess I need to learn just the right level of water. it's a bit confusing; the directions state to "fill to the rim", but then there's a mark a bit below the rim that states "fill level". I like the 9 oz volume; I didn't want 14 oz but the one I'd had before was only 7 oz, and seemed like not enough. I'm watching a big, purple "age mark" on my arm to see how quickly it will fade away from drinking this hwater; so far, it's been quite slow. It's hard to tell much difference in my energy and other levels, as I have been using these h-water generators for a few years, and when I don't have one, I use the tablets. I'm hoping to see an improvement, though, eventually.

I have been buying hydrogen water bottles since they first came out. At first i bought the cheaper versions, but you could taste the chlorine residue in the water. Then I bought a more expensive one and it was alight for a few months, but eventually got weaker in producing the bubbles, so i decided to pay a little more for quality. So far Ocemida has been great, and produces the most hydrogen bubbles i have seen in all the bottles that I have purchased. The cost was more than I wanted to pay, but now as an experienced hydrogen water drinker, I have no regrets with this brand.

Quality and performance isn't questionable

Quality and performance isn't questionable. I do have a concern with the usb charging cord and plug on the unit (Nexus). I'm wondering the life expectancy of those because you don't get many cycles on one charge and I ma presently unplugging and re-plugging everyday (which is almost unavoidable)

Absolutely worth it

Absolute quality

Works well

Works well, don't feel any difference yet.
The charge could last a little longer.
Have to plug it every other day.

Great product

Great product, works as advertised.

Just awesome product!!! When I unscrew lid I

Just awesome product!!! When I unscrew lid I feel like it’s going to pop off and go to the moon it’s so strong !!💪

Very good bottle - high concentration of hydrogen

Very good bottle - high concentration of hydrogen. Nice design. Fantastic quality product. I trully recommend.

Good

Well made

My newest and now best model, was a little over priced though but it is superior quality. I had what I considered the best until I got this and it is a little higher quality but both are top of the line!

Water Bottle

I love my water bottle. Just wish they were bigger to produce more water at once. Liked the inclusion of the hydrogen tablets with this purchase.

Thank you, Tessi. Please note that less water results in a higher hydrogen concentration. Since hydrogen dissipates quickly, our bottles are designed with the ideal volume for a single refreshing chug—ensuring maximum benefit every time.

So far so good. I tested it with the blue drops on day 2, I know it will take atleast 2weeks to reach peak.. it measured 3.4ppm on a 10 mins cycle, I’m hoping it will reach 5ppm as claimed after 1 month. Will do another review after 1-2 months

The blue drops are not a reliable way to measure hydrogen concentration. This is why we provide two different third-party lab results. H2Analytics is an IHSA approved lab using gas chromatography and H2HUBB is using Unisense H₂ Microsensor.

Excellent

I bought different products from competitors, this bottle is just perfect. After 2 months of use, I have excellent results. The level of hydrogen produced is the best on the market today, the bottle is very well designed, easy to clean, perfectly sealed. The customer service answered my questions very quickly, the delivery was also very fast and the guarantee is 5 years. I live in Europe, I had to add the cost of a customs tax of 64 euros, but there is no company on the European market that can compete at the level of performance. The bottle is compatible with European plugs (ask for information at customer service before starting). I had chosen this bottle because of the recommendations of H2HUBB, very happy with my purchase !

The best for design and output

We bought Ocemida after careful search, using AI to ensure out work was in line with objective data analysis. We had already one, new, and were happy but the output was way lower. This Ocemoda is very well made, well designed, easy process, and produces 2 levels of hydrogen at our choice.

Craig

Exceptional product! I have used many hydrogen products over the years. This is one my family can taste and feel the hydrogen bubbles coming from this water bottle.

Improved

Love the new cover over charging port.

Really loving my HRW generator

So gar so good! The results with this sort of thing take time but so far the generator charges and functions well. I have yet to test the ppb. But I trust the lab verification to be accurate. Customer service was excellent and helped me figure some things out with the operation.

BEST UNIT ON THE MARKET

The Ocemida Professional is the most powerful unit on the market. Look carefully at H2hubb and you'll see it is the only one that can generate 1g of hydrogen within 5 minutes. ALL of the 'near' competitors take 10 min. to achieve this. With about 8 uses available per charge, and all studies based on getting 5g/day, this 5 yr. warrantied, beautifully made unit is as good as it gets. If you're serious about getting the benefits of Hydrogen water, there is no better choice.

Great bottle

Hi there,

Very happy with the bottle and it's quality. Although there are ones on Amazon that look exactly the same for less money. Curious if these are the same as they look exactly the same. Otherwise a great product.

Great equipment

Thanks for this high quality device. It works great.

Professional Hydrogen Water Bottle Generator – 6000 PPB

Amazing product with above and beyond customer service!
⭐️⭐️⭐️⭐️⭐️⭐️

Is the 5 yr. warranty covered in the uk and is there an option to add accidental damage and loss insurance? (Like other leading companies)

Ocemida

Yes the warranty is covered in the UK as well and you can add accidental damage and loss insurance.

I am interested in purchasing the Ocemida Nexis product.
I live in France where the voltage is 220-240 V, 50-60 Hz.
Could you please tell me what type of USB charger I should use with this device?

Ocemida

The Ocemida Nexis charges via USB (typically USB-C). Since France uses 220-240V at 50Hz, you’ll need:

✅ A USB charger (wall adapter) that:
• Accepts 220–240 input (most modern chargers do)
• Outputs 5V USB power
• Has a USB-C port (preferred) or USB-A with USB-C cable

🛒 Recommended Charger Specs

Feature What to Look For
Input Voltage 100–240 V ~ 50/60 Hz (works worldwide)
Output 5V DC
Output Current ≥ 1A (2A or 2.4 A recommended)
Ports USB-C (or USB-A + USB-C cable)
Safety CE certified (for EU)

📌 Example (General Type)

USB-C wall adapter, 5V / 2–2.4A, 100–240V input, CE certified

This ensures the charger works safely with French mains power and supplies enough current for the hydrogen bottle to charge properly.

⚠️ Notes
• You do NOT need a voltage converter - a good USB charger will accept 220-240 V directly.
• Always use a quality charger with safety certifications (CE/GS/ETL).
• Avoid cheap, unbranded chargers - they may cause charging issues.

Country/region

Nexis Professional Hydrogen Water Bottle, 9.5oz Tritan