Nitropress DS
Wait, what now?
My friend said "I've got this great gadget in my kitchen. I just push a button and drinks (e.g. coffee cold brew) are injected with nitrogen. Just like Guinness. No gas canisters required!"
I'm sure it is delicious, but since I'm a nitrox certified scuba diver, and I've seen all the massive, expensive, loud, time consuming equipment that goes into making special gas mixtures for deep / repetitious scuba diving... how could any countertop device possibly filter air into ~pure nitrogen in seconds? At any price?
Apparently the answer is: "it doesn't."
It's just injecting air. Which is fine? Air is 78% nitrogen anyway. So they're not lying. They're mostly adding nitrogen. And so are you, every time you inhale.
I Google'd (Kagi'd) around for the specs, science, eventually gave up and threw the question out to ChatGPT 4o, which spewed forth the following:
When the Nitropress DS forces air through its 200 micron filter, how much nitrogen, CO2, and oxygen is in the result?
🌬️ NitroPress DS – Gas Composition After Filtration
The NitroPress DS is a countertop device designed to infuse beverages with nitrogen, creating a smooth, creamy texture similar to nitro cold brew coffee.
Unlike traditional systems that use disposable nitrogen cartridges, the NitroPress DS extracts nitrogen directly from ambient air and passes it through a 200-micron filter.
🧪 Ambient Air Composition (After 200-Micron Filter)
| Gas | Approximate % |
|---|---|
| Nitrogen (N₂) | ~78% |
| Oxygen (O₂) | ~21% |
| Carbon Dioxide (CO₂) | ~0.04% |
| Other Gases | ~1% (argon, neon, etc.) |
Note: The 200-micron filter only removes particulates, not gases — so the composition remains the same as ambient air.
⚠️ Considerations
-
Nitrogen Purity: Because the system uses air, nitrogen is not as pure as from cartridges. This may result in a milder nitro effect.
-
Oxygen Presence: Oxygen is still present in the gas mix, which can accelerate oxidation in some beverages.
-
Taste and Texture: While the NitroPress DS does create a smooth texture, results may differ slightly from pure nitrogen infusion systems.
Video demo: Nitro Cold Brew from thin air! | NitroPress DS -- dude compares original Nitropress (using ~100% nitrogen single-use canisters) vs Nitropress DS (air (~78% nitrogen)).
[ Unless you're living at extreme altitude, your air is not "thin." --Jay ]
Jay's Conclusion: I'm sure it's great, and not having to pay for single-use canisters must save a ton of money assuming you use it a bunch.
This made me think of the Triton 'Tankless' Scuba Mask scam of 2013. Tiny tech that's somehow converting the molecular composition of water / air rapidly?
Nitropress is just for drinks, harmless, I wouldn't say they're lying. The marketing is just confusing to gas nerds like me.
When Triton lied about scuba tech people could die (drown).
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