What the Water Introduces to the Metal

Every builder conditions their tubes. Run the cell for days in distilled water, change it when it clouds, wait for the residue to stop, watch the current settle. Three hundred and eighty-one posts in this archive's forums describe it, and the recipes converge.

Stan describes it too, in Capacitance (Cd) — and the clause usually left off the end is the testable one:

the stainless steel T304 material … undergo particle alignment of its atomic structure … after a pre-set time … remains in electrical atomic alignment after pulse off-time … allowing the resultant Surface Polarity Effect (skin effect) to supply a sufficient residual atomic "Electrical Charge Field" to help maintain molecular alignment of water atoms during pulsing operations

Four claims: it develops over time, it survives pulse-off, it leaves a residual field, and that field holds the water's alignment through the gap. And note where he puts it — surface material, surface polarity, skin effect.

The mechanism fails; the location does not

A field cannot align anything inside a metal. Put one on and the electrons cancel it within 0.055 nm — a fifth of an atom. That is not a small effect you could beat with more voltage; it is the definition of a conductor.

But 304 stainless wears an oxide film, and the film is real, documented and exactly where he said the change was:

thickness	1 to 3 nm
structure	p-type Cr₂O₃ inside, n-type iron oxide outside
growth	thickens as you hold the metal positive
how fast	the film grows in minutes; stripping the free iron takes days

Where the voltage lives — and for how long

inside the metal	0.055 nm — nothing
Helmholtz layer	0.3 nm
conditioned oxide	1.8 nm
diffuse layer (20 ppm rain water)	18 nm
the water gap	2,286,000 nm

That is the DC picture. During a pulse it inverts:

interface capacitance (film + double layer, one tube)	0.55 mF
bulk water resistance, 20 ppm	~40 Ω
so the interface charges in	22 ms
meaning above about	7 Hz
at 10 kHz: interface 0.03 Ω, bulk gap	3,700 Ω

During a kilohertz pulse the interface is a short and the volts sit across the water. Which is why conditioning effects show up most clearly at low frequency and DC — and why what conditioning changes and whether it matters at your frequency are two separate questions.

Stephen's barrier is nearly a real object

What we realized was that the water that makes contact with the metal sets up a barrier. It's a barrier technology…

Alloying is not doping — 18 % chromium is metallurgy. But the oxide is doped, by its own defects and by ions from the water, and it is a bilayer: Mott-Schottky on 304 in near-neutral water gives a negative slope for the inner Cr₂O₃ and a positive one for the outer iron oxide. There is a p-n structure in that film, two nanometres thick, that the cell grew. His "symmetry with transistor technology" is nearer than it sounds.

Two corrections to this archive's own pages

• The Fermi Level Barrier says the Fermi level of 304L "is typically located within the energy band gap". A metal has no band gap at its Fermi level — that is why it conducts.
• General Conditioning Principles says chromium is "a common impurity in natural water" and that the Cr₂O₃ forms from chromium ions in the water. It does not. The chromium is the 18 % already in the alloy.

Why the current falls — two reasons, not one

1. The film is thicker, so charge crosses harder. (Meyer's own figure 7-14 is a plot of exactly this trade.)
2. The corrosion current has gone. Before conditioning, part of your current dissolves the free iron smeared over the surface: Fe → Fe²⁺ + 2e⁻, no gas at all. Stephen, in 2007: the brown material "is coming from the metal".

And that second one comes with a receipt: 1 g of iron = 0.96 Ah. Filter the sludge, dry it, weigh it, and you have the amp-hours that were never going to make gas.

The bench card, honestly calibrated

amps	current probe into a scope, not a panel meter
gas	inverted cylinder, temperature logged
divide	litres per amp-hour
Faraday's ceiling	0.627 L/Ah (10.45 mL/min/A)

Expect the amps to fall and the gas to roughly hold. That is ordinary electrochemistry — the iron has stopped stealing electrons and your Faraday efficiency is climbing toward the ceiling. It is a better electrolyser, which is worth having, and it is not Meyer's effect.

The result that would be extraordinary is gas per amp-hour above 0.627 L. Nothing has ever beaten that ceiling.

Still open

• No measured oxide thickness for a conditioned Meyer tube. (EIS; any corrosion lab.)
• Nobody has scoped the off-time hold — his own sharpest claim.
• Nobody has weighed the sludge against the amp-hours.
• And nobody has found the transpassive edge: above ~1.2 V at the interface chromium leaves as chromate and the water goes faintly yellow. Stephen describes the end of it — "the cell seems to die on them, and then they have to … replace the stainless steel". Conditioning and dying are the same curve at different times.

See Gas yield and Faraday efficiency.