ChlorAir™ — Airborne Chloride Monitoring Card

Measure the corrosion potential before the corrosion itself.

The ChlorAir™ kit places a passive sampling card in your technical space to measure airborne chloride deposition over time — flagging the chemical risk while it is still building, long before pitting, contact failure or trace damage becomes visible.

Predictive, not reactive

ISO 8502-9 conductometric method

ISO 14644-1 sampling card

Swiss laboratory

Order Now — $278 → View Lab Report

Day standard exposure — extendable for long-term monitoring

$278

Kit price — worldwide shipping included

57%

RH deliquescence point of chloride salts

Intl. Patents Pending

Process

How ChlorAir™ Works

1. Mount

Unseal the sampling card and mount it in the airflow of the room or cabinet you want to monitor. No chemicals, no calibration, no specialist needed.

2. Expose

Leave the card in place for the standard 30-day period — or longer, for ongoing long-term monitoring of a room's airborne chloride trend.

3. Mail

Reseal the card and drop it in the included international postage-paid UPS return mailer. It ships directly to our Swiss laboratory.

4. Report

Receive a certified ISO 8502-9 digital report covering total soluble salts, deposition rate and years-to-limit — delivered by email.

ChlorAir airborne chloride sampling card in resealable air contamination control sleeve

Includes Return Mailer

The Kit

One Card.
One Clear Answer.

A passive airborne chloride sampling card, a Swiss lab analysis, no hidden fees. Designed for data centers, server rooms and industrial technical spaces where salt-laden air is a silent corrosion risk.

One ChlorAir™ Sampling Card — an ISO 14644-1 air contamination control card, mount and forget.
Resealable Contamination-Free Sleeve — keeps the card clean before mounting and during return shipping.
International Postage-Paid Return Mailer — ships worldwide via UPS at no extra cost.
Instructions — a short, clear mounting guide so setup takes minutes and needs no specialist.
Certified Swiss Lab Report — total soluble salts and deposition rate per ISO 8502-9, delivered by email with a Pass/Fail read.

Lab Analysis

What the ISO 8502-9 Report Tells You

All three results measure corrosion potential, not corrosion damage itself — the point is to catch the risk while it is still chemical, not yet physical. Total soluble salts quantify what has already deposited on the card. Deposition rate projects how long your equipment has before reaching the corrosion limit. And because airborne chloride salts turn conductive at a lower humidity than most other contaminants, the deliquescence threshold tells you how much margin your room's climate control is really giving you before that potential becomes active corrosion.

RESULT 01

Total Soluble Salts

ISO 8502-9 conductometric method · µg/cm²

The card is eluted with a precise volume of deionised water and the extract's conductivity is measured, then converted to chloride surface density — the total corrosive salt load the card collected during its exposure period.

Result	Limit	Status
< 5 µg/cm²	Electronics limit	✓ Pass
5 – 10 µg/cm²	Exceeds electronics limit	⚠ Marginal
> 10 µg/cm²	Exceeds building/insurer limit	✗ Fail — High risk

Why chlorides? International organizations and insurers set a 10 µg/cm² limit for buildings and general installations. Smoke from burning PVC, chemicals, acids and even concrete dust can all elevate airborne chloride levels well above this.

RESULT 02

Deposition Rate

Extrapolated from exposure period · years until limit reached

The lab divides the measured salt load by the exposure time to give a deposition rate, then projects how many years of continuous exposure at that rate it would take to reach the 10 µg/cm² limit — a direct read on your room's remaining margin.

Years to Limit	Meaning	Status
> 5 years	Exceeds average IT equipment lifespan	✓ Good
1 – 5 years	Within typical equipment lifespan	⚠ Review
< 1 year	Rapid accumulation	✗ Fail — High risk

Why five years? Five years is treated as the average life span of IT equipment, so a deposition rate that would take longer than that to reach the limit is considered a healthy result.

RESULT 03

Deliquescence Margin

Chloride DRH ≈ 57 % RH · room humidity vs. threshold

Chloride salts on a board only corrode once the air is humid enough to dissolve them. Their deliquescence point sits near 57 % RH — noticeably lower than the ~70 % RH threshold used for many other airborne contaminants. Below it, the salt stays dry and the attack essentially stalls; cross it, and an electrolyte film forms and corrosion accelerates.

Room RH	Salt State	Status
< 57 % RH	Dry, deposited but inactive	✓ Stalled
57 – 70 % RH	Intermittently dissolved	⚠ Active
> 70 % RH	Continuously conductive electrolyte	✗ High risk

Why this matters: A data center that comfortably passes a 70 % RH conductivity check can still be corroding, because chloride salts go electrolytic at a lower humidity than that check assumes.

The Science

Why Airborne Chlorides Deserve Their Own Monitor

Corrosion potential and corrosion damage are two different moments in time. By the time pitting, contact resistance or a failed trace is visible, the chemistry that caused it has usually been sitting on the hardware for months. ChlorAir™ is built to catch the earlier moment — the chloride load quietly accumulating in the air — while it is still a measurable risk and not yet a failure.

Surface-dust tests only capture what has settled and stayed on a wipeable surface at the moment of sampling. Airborne chlorides are different: they arrive continuously with the air itself, deposit on every exposed surface inside a rack — connectors, contacts, PCB traces, cooling fins — and keep accumulating between cleaning cycles. A room can look clean on a surface wipe test and still be under sustained chloride attack from the air passing through it.

Deliquescence is the process where a solid salt deposit absorbs moisture from the air and turns into a liquid electrolyte film. This happens once ambient relative humidity crosses the salt's Deliquescence Relative Humidity (DRH). For common chloride salts, that point sits near 57 % RH — well below the 70 % RH threshold many conductivity checks use as their reference. Below 57 % RH, the salts stay dry and largely inert. Cross it, and the same deposit becomes a conductive, corrosive film that attacks copper traces and connector plating around the clock.

Because that threshold is lower than for most other salts, a data center run at a "safe" 55–65 % RH band can still spend part of every day above the chloride deliquescence point — a risk that a once-off wipe test, or a check calibrated to a higher RH, will not reveal. Continuous or periodic airborne monitoring is the only way to catch it.

Monitoring Rationale

Why Monitor the Air, Not Just the Surface?

Three reasons airborne chloride monitoring belongs alongside — not instead of — surface testing.

It corrodes at a lower humidity than most contaminants

The ~57 % RH deliquescence point of chloride salts is lower than the ~70 % RH threshold used for many general dust or ESD checks, so rooms that pass those checks can still be in the active corrosion zone for chlorides specifically.

It accumulates continuously, invisibly

Unlike a settled-dust event, airborne deposition happens with every air change. A single 30-day exposure captures a realistic average, and repeat testing over time reveals whether the corrosion potential is stable, rising, or already close to becoming visible damage.

It underpins insurance and warranty claims

A dated, standard-referenced ISO 8502-9 report is the kind of evidence insurers and equipment manufacturers ask for when assessing damage claims tied to smoke, particle events, or ambient corrosivity.

ISO 8502-9

Conductometric Salt Analysis

ChlorAir™ lab results follow the ISO 8502-9 conductometric method for determining water-soluble salts, reported as chloride surface density and deposition rate.

ISO 14644-1

Air Contamination Control Card

The ChlorAir™ sampling card itself is built to the ISO 14644-1 air contamination control card standard, so it captures a representative, standardised airborne sample.

≈ 57 % RH

Chloride Deliquescence Point

Below this relative humidity, deposited chloride salts remain dry and largely inactive. Above it, they dissolve into a conductive electrolyte and corrosion accelerates sharply.

Pricing

One Card. One Price.
No Hidden Fees.

A single ChlorAir™ kit covers one sampling location for a standard 30-day exposure, both directions of shipping, and a full Swiss laboratory report against airborne chlorides per ISO 8502-9. The same kit can also be left in place longer for extended, long-term monitoring.

One ChlorAir™ Sampling Card — mounts in minutes, no specialist required.
International Postage-Paid Return Mailer — shipped via UPS, worldwide, both ways.
Instructions — clear, simple mounting steps, no specialist required.
Certified Swiss Lab Report — total soluble salts and deposition rate per ISO 8502-9, delivered by email.

ChlorAir™ Kit

US$278

Worldwide UPS shipping included

Ships worldwide via UPS. Return mailer and Swiss lab analysis included — no additional fees. 30-day standard exposure, extendable for long-term monitoring.