NMX‑CBRN‑4 / Rev 00 / decon + collective protection / HEPA + carbon 2026 · Product Page

NMX-CBRN-4 · ENGINEERED TO ORDER — CBRN DECONTAMINATION & COLLECTIVE PROTECTION

Clean it off. Keep it out.

Name: CBRN Decontamination & Collective Protection System
Brand: Neometrix

Two defensive systems against one CBRN threat. A decontamination system — hot water, dosed decon agent, pumps and spray lances on a skid or trailer — that washes chemical, biological, radiological or nuclear contamination off people, vehicles and equipment. And a collective-protection system — HEPA and impregnated-carbon NBC filtration under over-pressure, with an airlock — that keeps the threat out of a shelter or cabin. We build the apparatus and the filtration/over-pressure system; the filter media, detectors and agents are bought in. Engineered to order — no specific delivered system is claimed on this page.

Enquire — CBRN protection Capability sheet (PDF)

Illustrative image, not a delivered installation — a mobile skid-mounted decontamination unit with water tanks, a hot-water heater, a pump, hose reels and spray lances, in a clean yard, matte and unmarked, no text and no people

Fig · 01 A mobile decontamination unit — heater, pumps, tanks, hose reels and lances on a skid — illustrative, not a delivered installation

Threats

CBRNchem/bio/rad/nuc

Decontam

hot-water+ agent dosing

Collective

over-pressurefiltered air

Filtration

HEPA+carbonparticulate + gas

Form

skid/trailer+ shelter kit

ISO 9001 / 14001 Engineered to order Shelter & gas franchise Defensive / protective Noida · India

Overview

One threat, two defences.

A CBRN event contaminates two things at once: the people, vehicles and equipment that were exposed, and the air everywhere around them. Neither is solved by the other. You have to wash the contamination off what was hit, and separately filter the air so that where people shelter, work and are treated stays clean. This page is both systems — decontamination, and collective protection.

Illustrative image, not a delivered installation — a collective-protection air-filtration pack with a particulate pre-filter, large cylindrical NBC filter canisters and a blower, ducted to a shelter wall, matte and unmarked, no text and no people

Fig · 02 A collective-protection filtration pack — pre-filter, NBC filter canisters and over-pressure blower — illustrative, not a delivered installation

Clean it off — decontamination. A pre-wash removes the gross contamination, a dosed decon agent neutralises what remains, a dwell gives it contact time, and a hot-water rinse and monitoring confirm the person, vehicle or item is clean. Mechanically it is a heater, pumps, agent dosing, tanks and spray lances on a skid or trailer — a fluid system.

Keep it out — collective protection. Outside air is drawn through a particulate pre-filter, then an NBC filter (HEPA plus impregnated activated carbon) that stops both particulate and gaseous contamination, and an over-pressure fan pushes that clean air into the shelter so it sits at a slight positive pressure — which, with an airlock, means contamination can’t leak in.

Both play to our franchise. The decontamination system is fluid handling and skid fabrication; the collective-protection system is air handling built into a shelter — the same engineering behind our gas-pipeline systems and our field shelters.

Decontamination and collective protection answer the same threat from opposite ends — one cleans what the threat landed on, the other keeps it out of where people have to breathe. A serious CBRN posture needs both.

Two Jobs, One Threat

Clean it off, and keep it out

Decontamination removes contamination from what was exposed; collective protection filters the air and holds over-pressure so the sheltered space stays clean. Different physics, complementary defences — both on this page.

Franchise-Adjacent

The hardened side of our shelter & gas work

Collective protection is the CBRN add-on to our field shelter — filtration + over-pressure + airlock — built on our gas/air-handling; decontamination is fluid handling on a skid. Not a new domain: the protective edge of what we already do.

Honest on Sourcing

We build the systems; media & detectors are specialist

Neometrix builds the decon apparatus and the collective-protection filtration/over-pressure system and integrates them; the NBC filter media, CBRN detectors and decon agents are bought-in. No delivered system is claimed.

Architecture

Decontaminate, filter, protect.

The schematic shows both defences — the decontamination line that washes contamination off, and the collective-protection chain that filters the air and holds over-pressure. The detail panel covers the filter media and the over-pressure that do the work.

FIG · 03CBRN ARCHITECTURE · DECON: PRE-WASH / AGENT / RINSE · COLPRO: PRE-FILTER / NBC FILTER / OVER-PRESSURE

Fig · 03 Decontamination washes the threat off; collective protection filters the air and holds over-pressure to keep it out — two defences, one threat

Arc · 01

Decontamination Process

Pre-wash, dosed decon agent, dwell / scrub for contact time, then a hot-water rinse and monitoring to a verified clean result — for personnel, vehicles, equipment and terrain.

Arc · 02

Collective Protection Chain

A particulate pre-filter, an NBC filter (HEPA + impregnated carbon), an over-pressure fan and an airlock — together they keep a shelter or cabin clean inside while it is contaminated outside.

Arc · 03

Heat, Pumps & Dosing

The decon apparatus: a hot-water / steam heater, pumps, agent dosing / proportioning, tanks, hose reels and lances — skid- or trailer-mounted, built for field use. A fluid system, which is our franchise.

Arc · 04

Filter, Blower & Controls

The collective-protection system: the filter housing, the over-pressure blower, the airlock / protective entrance, ducting and controls — integrated into the shelter, on our air-handling and shelter competence.

Have a CBRN decontamination, collective-protection or NBC-shelter requirement? Send the threat, the throughput and the platform — a clause-by-clause compliance matrix within two working days · [email protected]

Send tender spec

Specifications

Reference systems, sized to the threat.

The parameters below describe reference decontamination and collective-protection systems. The decon throughput and heat, the filter capacity and the over-pressure all follow from the threat, the number of people or vehicles, and the platform — a man-portable set, a trailer, or a shelter fit.

Illustrative image, not a delivered installation — a decontamination line: an open steel framework arch with spray nozzles and a catchment tray, with hoses, empty with no people or vehicle, matte and unmarked, no text

Fig · 04 A decontamination line — spray arch, nozzles and a catchment bund — illustrative, not a delivered installation

Where CBRN protection goes wrong

In the details that let the threat through. Decontamination with too little contact time or the wrong agent leaves contamination behind; a collective-protection shelter that loses over-pressure — a stuck fan, a leaking seal, an airlock left open — is no longer protected; and a filter run past its capacity without monitoring quietly stops filtering.

That is why the decon process is matched to the threat and monitored to a clean result, the shelter is built to hold over-pressure with a real airlock, and the filter capacity and change-out are engineered in. CBRN protection is only worth the leak it doesn’t have.

Full specification — expand

System	CBRN (NBC) decontamination & collective protection — engineered: decon apparatus (heat, pumps, dosing, tanks, lances) + collective-protection system (filtration, over-pressure blower, airlock, ducting), integration
Threats	Defends against C/B/R/N contamination — chemical, biological, radiological, nuclear (defensive; the system removes / excludes contamination)
Decontamination	Pre-wash → dosed decon agent → dwell → hot-water rinse & monitor; for personnel, vehicles, equipment & terrain
Decon Apparatus	Hot-water / steam heater, pumps, agent dosing / proportioning, tanks, hose reels, spray lances / arches; skid- or trailer-mounted
Collective Protection	Particulate pre-filter → NBC filter → over-pressure fan → shelter / cabin; with airlock / protective entrance
NBC Filter	HEPA particulate media + impregnated activated carbon — removes both particulate and gaseous contamination
Over-Pressure & Airlock	Positive shelter pressure held by the blower; airlock / protective entrance to enter without breaking protection
Forms	Man-portable / skid / trailer decontamination; shelter- or vehicle-mounted collective protection; or a combined mobile unit
Sourcing	Neometrix builds the decon apparatus & the collective-protection system & integrates them; the NBC filter media, CBRN detectors & decon agents are bought-in specialist items
Status	Engineered to order · sized to the threat, throughput & platform · quoted across CBRN protection requirements · no specific delivered system is claimed on this page

PDF · 1 page

CBRN Decontamination & Collective Protection — Capability Sheet

Tender Response

Send your threat & platform — compliance matrix in two working days

Variants

Two systems, four fits.

Tenders call it a decontamination system, a collective-protection system, an NBC filtration set or a CBRN shelter. The two principles — wash the contamination off, and filter the air to keep it out — take these forms.

Var · 01

Personnel Decontamination

Heated showers and lines with dosed agent — for decontaminating people, including casualties, to a monitored clean result, with the run-off contained.

Var · 02

Vehicle, Equipment & Terrain

Higher-flow lances, arches and dosing for large items, vehicles, aircraft, hardstandings and routes — where volume and reach matter more than fine control.

Var · 03

Collective Protection (Shelter / Cabin)

NBC filtration + over-pressure + airlock fitted to a shelter, command post or cabin, so it stays habitable in a contaminated environment — the hardened version of our field shelter.

Var · 04

Mobile Decon-and-ColPro Unit

A trailer or skid that combines the decontamination apparatus and a collective-protection set as one deployable package — decon the exposed, and a clean space to work from.

Applications

Where it protects.

Wherever people and equipment have to survive and keep working in a contaminated environment — cleaning the exposed, and holding a clean space to shelter and treat them.

A · 01Personnel decontamination lines — to a monitored clean result

A · 02Vehicle, aircraft & equipment decontamination — high flow, wide reach

A · 03Terrain & hardstanding decontamination — routes and areas

A · 04Collective protection for shelters & command posts — habitable, protected

A · 05Collective protection for vehicles & cabins — protected crews

A · 06Field-hospital & clean-area protection — treating the exposed, safely

FAQ

Common questions.

Plain-language answers from the engineering team.

Q · 01 What is the difference between decontamination and collective protection?

They are two separate defences against the same CBRN threat, working from opposite ends, and a serious posture needs both. Decontamination deals with contamination that has already landed on something — a person, a vehicle, a piece of equipment, a patch of ground — and its job is to remove or neutralise that contamination and confirm the result is clean. It is an active, wet process: pre-wash, apply a decontamination agent, give it contact time, rinse with hot water, and monitor. Collective protection deals with contamination in the air, and its job is to keep it out of a defined space — a shelter, a command post, a cabin — so that the people inside can work, rest, or be treated without protective masks and suits. It does that by drawing air through an NBC filter and holding the space at a slight over-pressure behind an airlock, so any leakage is outward. You cannot substitute one for the other: decontamination cleans what was hit but does nothing for the air; collective protection keeps a space clean but does nothing for a contaminated vehicle outside it. This page covers both because a real CBRN requirement almost always needs both.

Q · 02 What threats does it protect against?

The four classes covered by the term CBRN — Chemical, Biological, Radiological and Nuclear (the older term is NBC, nuclear-biological-chemical). In practice that means chemical agent vapour and liquid, biological aerosols, and radioactive particulate (fallout / dust). The important point is that this is entirely defensive equipment: everything here exists to remove contamination from people and kit, and to exclude it from a protected space — there is nothing offensive on this page, and we deliberately describe the threats only as the contamination the system defends against, not in any operational detail. The system is configured to the threat: the decontamination agent and process are chosen for the contamination type, and the NBC filter media are specified to stop the relevant particulate and gaseous hazards. So while the machine and its plumbing, filtration and over-pressure are the same in principle, the agents, filter media and monitoring are matched to what the requirement says the system must protect against.

Q · 03 How does an NBC filter actually work?

In two stages, because a CBRN threat has two physical forms — particles and gases — that need different physics to remove. First, a HEPA (high-efficiency particulate air) filter traps the particulate hazards: dust, aerosols, radioactive fallout particles and biological agents, all of which are solid or liquid particles, captured to very high efficiency by the fine filter medium. Second, a bed of impregnated activated carbon removes the gaseous and vapour hazards: activated carbon has an enormous internal surface area that adsorbs chemical vapours, and it is impregnated with additives that chemically react with and hold the specific vapours that plain carbon would not retain well. A particulate pre-filter sits ahead of both to catch coarse dust so the expensive main filter is not clogged prematurely. Because the carbon is gradually consumed and the HEPA gradually loads, the filter has a finite capacity, so the system is designed with the right filter size for the required duration and with a defined change-out regime — a filter that is quietly past its capacity is the classic way collective protection fails, which is why capacity and monitoring are engineered in from the start.

Q · 04 What are the over-pressure and airlock for?

Together they turn a filtered air supply into a genuinely protected space. Filtering the incoming air is necessary but not sufficient: if the shelter simply leaked, contaminated air would find its way in through every seam, cable gland and door gap. The fix is over-pressure — the blower pushes in more clean, filtered air than leaks out, so the inside of the shelter sits at a slightly higher pressure than outside, and every leak path therefore flows outward, carrying clean air out rather than letting contaminated air in. The remaining problem is the door: opening it would dump the over-pressure and let contamination in. That is what the airlock (or protective entrance) solves — a small ante-chamber with two doors, used one at a time, so people can enter and leave, and decontaminate on the way in, without ever creating an open path from outside to the protected volume. Engineered properly, the two give a shelter that stays clean and habitable indefinitely in a contaminated environment, as long as the filter has capacity and the over-pressure is maintained — which is why we build the shelter to actually hold pressure and instrument the fan and pressure, rather than treating them as an afterthought.

Q · 05 Do you make the filter media, detectors and decon agents?

No — and we are clear about the boundary, because it is the honest one. The NBC filter media (the HEPA element and the impregnated activated carbon), the CBRN detectors and monitors, and the decontamination agents themselves are specialist products — the filter media and agents are consumables with defined performance and shelf-life, and the detectors are precision instruments — and they come from established specialist suppliers. What Neometrix engineers, builds and integrates is the equipment around them: the decontamination apparatus (the hot-water or steam heater, the pumps, the agent dosing and proportioning, the tanks, hose reels and spray lances, and the skid or trailer), and the collective-protection system (the filter housing, the over-pressure blower, the airlock and protective entrance, the ducting and the controls), and the integration of both into a shelter, vehicle or deployable package. That division plays to strength: the hardware — fluid handling, air handling, fabrication and shelter integration — is exactly our franchise, while the filter chemistry, detection and agents are best sourced from the specialists who make them. To be plain about status: this is offered engineered-to-order and quoted against CBRN protection requirements; no specific delivered system is claimed on this page.

Q · 06 How does this relate to your field shelter and gas-pipeline pages?

It is the protective, CBRN-hardened edge of exactly those two franchises — which is why we can build it credibly rather than as a bolt-on. Our field technical shelter and command posts already provide the transportable, environmentally-controlled protected structure; collective protection is precisely the CBRN upgrade to one of those shelters — add the NBC filtration, the over-pressure blower and the airlock, and build the shelter to hold pressure, and it becomes a protected space. That, in turn, is an air-handling problem, which sits on the same competence as our medical & industrial gas-pipeline systems — moving, filtering and controlling a gas to a specification. The decontamination side is a fluid-handling problem — heaters, pumps, dosing, tanks and spray — which is our fluid-systems and skid-fabrication work. And it sits alongside our ballistic protection as the other half of a protective-defence line: one keeps out projectiles, this keeps out contamination. So rather than a new and unrelated product, this is the point where our shelter, gas/air-handling, fluid-systems and protection franchises meet, pointed at the CBRN threat.

↗

The protection line from Neometrix.

The field shelter it hardens, the gas and air handling behind it, and the ballistic protection alongside it — engineered at our Noida facility.

↗ Shelter

Field Technical Shelter & Command Post

The transportable protected structure — collective protection is its CBRN-hardened add-on.

↗ Gas & Air

Medical & Industrial Gas Pipeline Systems

Moving, filtering and controlling a gas to spec — the air-handling competence behind ColPro.

↗ Protection

Modular Ballistic Protection System

The other half of the protective line — one keeps out projectiles, this keeps out contamination.

Browse all Neometrix product lines.

Get a quotation

Send the threat
and the platform.

The defence programmes desk replies within two working days with a clause-by-clause compliance matrix and a budgetary quotation. Write to [email protected] or use the form.

Enquire — CBRN protection Capability sheet (PDF) +91 7777 876 876

ISO 9001 / 14001 ENGINEERED TO ORDER — CBRN DECONTAMINATION & COLLECTIVE PROTECTION DECON: HOT WATER + AGENT · COLPRO: HEPA + CARBON · OVER-PRESSURE + AIRLOCK ENGINEERED IN NOIDA · INDIA

Clean it off. Keep it out.

One threat, two defences.

Clean it off, and keep it out

The hardened side of our shelter & gas work

We build the systems; media & detectors are specialist

Decontaminate, filter, protect.

Decontamination Process

Collective Protection Chain

Heat, Pumps & Dosing

Filter, Blower & Controls

Reference systems, sized to the threat.

Where CBRN protection goes wrong

Two systems, four fits.

Personnel Decontamination

Vehicle, Equipment & Terrain

Collective Protection (Shelter / Cabin)

Mobile Decon-and-ColPro Unit

Where it protects.

Common questions.

The protection line from Neometrix.

Field Technical Shelter & Command Post

Medical & Industrial Gas Pipeline Systems

Modular Ballistic Protection System

Send the threat
and the platform.

Similar Products

Share This Page

Clean it off. Keep it out.

One threat, two defences.

Clean it off, and keep it out

The hardened side of our shelter & gas work

We build the systems; media & detectors are specialist

Decontaminate, filter, protect.

Decontamination Process

Collective Protection Chain

Heat, Pumps & Dosing

Filter, Blower & Controls

Reference systems, sized to the threat.

Where CBRN protection goes wrong

Two systems, four fits.

Personnel Decontamination

Vehicle, Equipment & Terrain

Collective Protection (Shelter / Cabin)

Mobile Decon-and-ColPro Unit

Where it protects.

Common questions.

The protection line from Neometrix.

Field Technical Shelter & Command Post

Medical & Industrial Gas Pipeline Systems

Modular Ballistic Protection System

Send the threatand the platform.

Similar Products

Share This Page

Send the threat
and the platform.