Science Snapshot
Two forms of oxygen, two different behaviors
Dissolved oxygen exists at the molecular level. Oxygen nanobubbles are microscopic gas-filled structures suspended in water.
6-minute read
The words dissolved oxygen and oxygen nanobubbles are sometimes used as though they mean the same thing. They do not. Both describe oxygen present in water, but the oxygen is held in a different physical form.
Understanding that distinction is the foundation of Nano Fit’s Dual Oxygen Technology.
What is dissolved oxygen?
Dissolved oxygen, commonly abbreviated as DO, refers to individual oxygen molecules dispersed throughout water. These molecules are too small to see and do not make water fizzy.
Dissolved oxygen is routinely measured in environmental science, aquaculture, drinking-water systems, wastewater treatment, and beverage production. Its concentration is commonly reported in milligrams per liter or as percent saturation.
Water naturally exchanges oxygen with the surrounding air. Production equipment can increase the amount of dissolved oxygen by improving gas-to-water contact, applying pressure, lowering temperature, or using fine diffusion.
What is an oxygen nanobubble?
An oxygen nanobubble is a nanoscale bubble whose interior contains oxygen gas. Instead of being a single dissolved molecule, it is a microscopic gas pocket surrounded by a gas-water interface.
Nanobubbles are far smaller than the visible bubbles in sparkling water. Their tiny size changes how they move and how quickly they escape. Rather than immediately rising and bursting like a large bubble, they can remain dispersed within the liquid for longer periods.
The key differences
| Feature | Dissolved oxygen | Oxygen nanobubbles |
|---|---|---|
| Physical form | Individual molecules in water | Microscopic gas-filled bubbles |
| Visibility | Invisible | Too small to see individually |
| Measurement | Measured with a dissolved-oxygen meter | Characterized by size and particle analysis |
| Behavior | Affected by temperature, pressure and gas exchange | Can remain suspended because of nanoscale properties |
Why doesn’t oxygenated water fizz?
Fizz comes from relatively large carbon-dioxide bubbles leaving solution. Elevated oxygen does not automatically create the same sensation. Dissolved oxygen is invisible, and nanobubbles are too small to produce the familiar sparkling-water bite.
Nano Fit is deliberately non-carbonated, which helps preserve its fresh, silky-smooth drinking experience.
Why combine both forms?
Nano Fit Technology
Dual Oxygen Technology
Nano Fit combines elevated dissolved oxygen with oxygen nanobubbles rather than relying on only one form.
The two forms are not interchangeable. Dissolved oxygen describes oxygen already integrated at the molecular level, while nanobubbles provide a separate suspended phase. Combining them creates a distinct water profile and is the engineering principle behind Nano Fit.
What the comparison does not prove
The existence and physical behavior of dissolved oxygen and nanobubbles can be measured. That does not, by itself, prove a specific medical, recovery, or athletic outcome. Human research on oxygenated drinking water remains mixed, and claims should be evaluated study by study.
Nano Fit’s approach is to be clear about what the technology is, what can be measured, and what is still under investigation.
Frequently asked questions
Are nanobubbles simply very high dissolved oxygen?
No. Dissolved oxygen and nanobubbles are different physical phases, although nanobubbles can influence oxygen transfer into the surrounding water.
Can a standard dissolved-oxygen meter count nanobubbles?
A DO meter measures oxygen available in the water according to the instrument’s method. It does not directly provide a nanobubble count or size distribution.
Is this the same as carbonation?
No. Carbonation uses carbon dioxide and produces visible fizz. Nano Fit uses oxygen and is non-carbonated.
Continue learning
Start with What Is Oxygenated Water?, then explore How Nanobubbles Stay Suspended in Water.
This article is for general educational purposes and is not medical advice.
