How Much Hydrogen Is Actually in a Glass of Hydrogen Water? (mg and Molecules)
If you already know your bottle's ppb rating, the most direct way to answer "how much hydrogen" is to turn that concentration into an actual amount, because a ppb figure by itself is a ratio, not a quantity, and the same rating poured into two different volumes hands you two different totals. A 300 ml serving from a Hydrion Core bottle at its rated 5,000 ppb works out to about 1.5 milligrams of dissolved hydrogen (H2), and everything below walks through where that number comes from, how to run the same conversion on any product's spec sheet, and how a drinking dose compares, by mass, to the gas an inhalation machine puts out.
- A concentration rating, whether in ppb or ppm, only becomes an amount of hydrogen once you multiply it by the volume you actually drink, so comparing products on ppb alone can be misleading when their serving sizes differ.
- Converting ppb to milligrams uses one simple relationship: because water's density sits close to 1 kilogram per liter, 1 ppb of dissolved gas works out to about 1 microgram per liter.
- Reaching a molecule count from there needs two more constants, the molar mass of H2 and Avogadro's number, and mostly demonstrates how a tiny mass corresponds to an enormous count of individual molecules.
- Dissolved hydrogen has a physical ceiling set by its solubility in water, so the higher figures on a freshly made bottle describe a temporary, post-electrolysis state rather than a number the water holds indefinitely.
Why a PPB Number Doesn't Tell You How Much Hydrogen You're Getting
Parts per billion and parts per million describe a ratio of hydrogen's mass to the water's mass, which means the number tells you how concentrated the water is but says nothing on its own about the total amount of hydrogen you are about to drink. Two Hydrion products make the point directly: Core is rated at up to 5,000 ppb for a 300 ml cycle, while Pulse reaches up to 8,000 ppb but holds only 280 ml. A higher ppb on a smaller bottle doesn't automatically mean more hydrogen delivered, and the only way to find out is to bring the volume into the calculation, which is what the next section does.
From PPB to Milligrams: The Direct Conversion
The conversion relies on one fact about water: its density sits close to 1 kilogram per liter, so a concentration measured in parts per billion by mass lines up almost exactly with micrograms per liter (source: Wikipedia, parts-per notation). Multiplying a product's rated ppb by the volume you are drinking, in liters, therefore gives the mass of dissolved hydrogen directly, and the same arithmetic works for every Hydrion drinking format once you know its rated ppb and its serving volume.
Core: 300 ml at 5,000 ppb
Multiplying 5,000 micrograms per liter by 0.3 liters gives 1,500 micrograms, or about 1.5 mg of dissolved H2 in a full 300 ml bottle at its rated concentration.
Pulse: 280 ml at up to 8,000 ppb
The Pulse bottle's 280 ml cycle at its full 8,000 ppb, 10-minute setting works out to roughly 2.2 mg, while its quicker 5-minute mode, rated at about 4,000 ppb, delivers closer to 1.1 mg from the same 280 ml. The shorter cycle isn't a lesser version of the same amount; it genuinely carries about half the dissolved hydrogen for roughly half the wait.
NOVA: 2 L at up to 3,000 ppb
Because the NOVA pitcher holds a full 2 liters, its 20-minute cycle at up to 3,000 ppb converts to about 6 mg for the whole pitcher, and its faster 10-minute option, rated at roughly 2,000 ppb, comes to about 4 mg over the same 2 liters. The larger volume is doing real work here: even though NOVA's ppb rating is lower than Core's or Pulse's, the total mass per pitcher ends up higher because there is simply more water carrying the dissolved gas.
H2 tablets: 8 ppm in 500 ml
A Hydrion H2 tablet is rated at 8 ppm, the same as 8,000 ppb, dissolved into 500 ml of water. Applying the same multiplication, 8,000 micrograms per liter times 0.5 liters, gives about 4 mg of dissolved hydrogen per glass once the tablet has fully dissolved.
| Product | Volume | Rated ppb | Approx. dissolved H2 |
|---|---|---|---|
| Core bottle | 300 ml | 5,000 | ~1.5 mg |
| Pulse bottle (10-min mode) | 280 ml | 8,000 | ~2.2 mg |
| Pulse bottle (5-min mode) | 280 ml | 4,000 | ~1.1 mg |
| NOVA pitcher (20-min cycle) | 2,000 ml | 3,000 | ~6 mg |
| NOVA pitcher (10-min cycle) | 2,000 ml | 2,000 | ~4 mg |
| H2 tablet | 500 ml | 8,000 (8 ppm) | ~4 mg |
Once you have a milligram figure for the volume you actually drink, you have a number that means the same thing regardless of which bottle, pitcher or tablet it came from, which is a more honest basis for comparison than lining up ppb ratings measured on different serving sizes.
From Milligrams to Molecules: How Many H2 Molecules Is That?
Turning a milligram figure into a molecule count takes two more constants: the molar mass of hydrogen gas, about 2.016 grams per mole (source: NIST Chemistry WebBook), and Avogadro's number, about 6.022 x 10^23 molecules per mole (source: NIST CODATA). The molar mass converts a mass into a number of moles, and Avogadro's number converts moles into an actual count of molecules, so the two steps run one after the other.
Applied to Core's roughly 1.5 mg per bottle: dividing 1.5 mg by 2.016 g per mole gives about 0.00074 moles of H2, and multiplying that by Avogadro's number gives roughly 4.5 x 10^20 molecules, or about 450 quintillion. That is the same physical amount described two ways, once in a unit small enough to weigh on a kitchen scale and once in a unit built for counting individual particles, and the size of the second number reflects how small a single hydrogen molecule is, not a change in how much hydrogen is actually in the bottle.
Learn more about what that molecule actually is, and why its small size matters for how it moves through water, in this explainer on molecular hydrogen. This section stays a unit-conversion exercise: it says nothing about how many of those molecules reach a particular tissue or get used by the body, a separate question the conversion math alone cannot answer.
The Ceiling: Why PPB Can't Just Keep Climbing
Hydrogen's solubility in water has a physical limit, and the Henry's law constant for hydrogen gas puts that resting ceiling, for water left open to hydrogen gas at about 1 atmosphere and room temperature, at roughly 1.6 mg per liter, or about 1,600 ppb (source: NIST Chemistry WebBook, Henry's law data). That number describes water in equilibrium with the gas above it, sitting at whatever concentration the physics settles on and staying there as long as the conditions don't change.
The 5,000 to 8,000 ppb figures on Core, Pulse and the H2 tablets sit well above that resting ceiling, and the reason is timing rather than a contradiction of the physics: electrolysis pushes a sealed bottle into a temporary, supersaturated state, held there by a small amount of internal pressure inside the closed container. Once the cap comes off and that pressure releases, the dissolved hydrogen starts moving back down toward the roughly 1,600 ppb resting level, which is why a labeled ppb is really a starting point rather than a number the water holds indefinitely. For more on how quickly that decline actually happens once a bottle is open, see this piece on how long hydrogen stays in water.
None of this makes the labeled ppb inaccurate; a fresh bottle really does start at its rated concentration. The useful practical detail is how soon after production you drink it, since that timing decides how much of the labeled figure is still dissolved by the time it reaches you. To check a bottle's actual concentration rather than rely on the rated spec, see this guide to dissolved hydrogen meters; for how the ppb rises minute by minute during a single cycle, see this article on production time.
Putting a Drinking Dose Next to an Inhalation Machine's Output
Inhalation machines report their hydrogen output as a gas flow rate, in milliliters of gas per minute, which is a different kind of measurement from a dissolved concentration, so the two numbers have to be converted onto the same basis, milligrams of H2, before they mean anything next to each other. The ppb and ppm explainer covers the concentration side of that basis; the gas side uses the ideal-gas relationship between a gas's pressure, volume and temperature, built around the molar gas constant (source: NIST CODATA).
Assuming the output is close to room temperature and atmospheric pressure, which is the standard basis for stating a gas flow figure, 1 mole of hydrogen gas occupies about 24.5 liters, so a given milliliter-per-minute figure converts into moles per minute, and then into milligrams per minute once hydrogen's molar mass is applied.
The Hydrion Zenith publishes seven output levels, and two of them, 300 ml/min and 600 ml/min, are described specifically as pure hydrogen, at a claimed 99.99% purity. Running the conversion on those two settings puts the lower one at roughly 24.7 mg of H2 gas per minute and the higher of the two pure settings at roughly 49.4 mg per minute. The remaining settings, from 450 up to 1,800 ml/min, mix in oxygen, and the product page doesn't state what fraction of that combined flow is hydrogen, so there isn't enough information from the source to convert those particular settings into a hydrogen mass, and this article doesn't guess at one.
Set next to Core's roughly 1.5 mg per 300 ml bottle, the lower pure-hydrogen inhalation setting delivers a comparable mass of H2 gas in under four seconds, and the higher of the two pure settings does it in under two. That gap comes down to gas density: a given volume of pure hydrogen gas packs in far more H2 mass than the same volume of water carrying a few thousand parts per billion of dissolved gas, which is a fact about density, not a statement about which route puts more hydrogen to use in the body. Drinking sends hydrogen through the gut, while inhaling sends it through the lungs, and matching the milligrams on paper says nothing about how much of that hydrogen is absorbed by either route, or how the two compare physiologically; a mass comparison and a benefit comparison are two different questions, and only the first one is answered here.
Doing the Math Yourself
The full conversion only needs two numbers you can find on almost any product's spec sheet: the rated ppb (or ppm) and the volume you are actually drinking. Multiply the ppb by the volume in liters to get micrograms, divide by 1,000 for milligrams, and you have a figure that means something regardless of the bottle, pitcher or tablet it came from. The molar mass and Avogadro's number only come into it if you want to take that further step and see the same amount as a molecule count.
The habit worth keeping is comparing milligrams, not ppb, whenever you weigh one product's headline number against another's. A bottle with a lower rated ppb but a larger serving volume can deliver more total hydrogen than a smaller bottle with a flashier number, and the reverse holds just as often, which is exactly the trap a bare ppb comparison sets. Browse the full lineup of Hydrion's drinking formats in the hydrogen water collection, or see the Hydrion Core bottle's own product page for its cycle-time and capacity specification alongside the numbers worked through here. For more of this hub's specification breakdowns, browse the News blog for the rest of the Specs & How It Works series.