Four names, one enclosure
A fume cabinet and a fume hood are the same piece of equipment. So are a fume cupboard and a fume chamber. A safety cabinet is not. Mixing those two up is how people get hurt. You can meet all four names on a single project. Here is what each name means, and how to be sure the enclosure that arrives is the one your work needs.
FIG. 01One enclosure, four names, and a fifth that is something else. The full mapping, with the standard behind each name, is in the name decoder below.
A fume cabinet is a ventilated enclosure you work inside. You reach in under a glass front that slides up and down. The cabinet pulls room air in past your hands. It carries harmful vapours, gases, dust and fumes off to a safe discharge. The protection runs one way only. It guards the person, not the sample.
That single line settles most arguments about which enclosure a job needs. If the thing you are trying to protect is the sample, this is the wrong enclosure. If the thing you are trying to protect is the person at the bench, it is the right one.
The same enclosure answers to other names. “Fume cabinet” is the wording on Indian and British purchase documents and in lab-furniture catalogues. Testing language calls it a fume hood. European standards work calls it a fume cupboard. Fume chamber is a fourth name, common in Indian teaching labs. All four are one device.
Which word you meet tells you which rulebook is in play. Fume hood is the term used by ASHRAE 110, ANSI/AIHA Z9.5 and SEFA 1. Fume cupboard is used throughout EN 14175. All four names are judged on one number: the face velocity across the sash opening, generally 0.3 to 0.5 m/s (60 to 100 fpm).
Room air in
Air is pulled in across the sash opening at 0.3 to 0.5 m/s.
Swept past the work
The sweep carries vapour away from the breathing zone, behind the sash.
Out to discharge
It leaves through the baffle and the riser, exhausted outside or carbon filtered.
FIG. 02Side section. Room air is drawn in across the sash opening, swept away from the breathing zone and discharged. Nothing in this path protects the sample.
Everything else on this page is a vocabulary problem. This part is a safety problem, so it comes first.
Four of the five names mean one thing. The fifth does not. Ask a supplier for a “safety cabinet” and you may be sent a biological safety cabinet. That one is built for live organisms, not chemicals. Or you may be sent a flammable storage cabinet. That is a fire-rated cupboard you keep solvents in and never work inside.
Chemical hazard
Also called a fume hood, a fume cupboard or a fume chamber.
Biological hazard
A different device, built and validated for live organisms.
FIG. 03Head to head on the two enclosures that share the words “safety cabinet”. The third product that shares them is beside this table.
And a third product answers to the same words
A fire-rated steel cupboard you keep solvents in. It is a store, not laboratory ventilation, and nobody works inside one.
The reason is physics, not paperwork. A biological safety cabinet protects by HEPA filtration. And HEPA captures airborne particulates only, never gases or vapours. So it will hold a bacterial aerosol and do nothing at all about solvent vapour. Most units also send part of their air back into the room.
The rule
The rule is short. A chemical hazard means a fume cabinet. A biological hazard means a biosafety cabinet , which Fabtech engineers and builds in-house.
So if a document says only “safety cabinet”, treat it as an unanswered question. It is one email at enquiry stage. It is a much harder conversation once the unit is on the bench.
Every one of these names is correct somewhere. What changes is who is speaking. It also changes which document they are reading from, and which standard governs the test.
Five names, top to bottom. Each one resolves onto the machine it denotes.
No standard uses this word
Purchase orders and catalogues
ASHRAE 110, ANSI/AIHA Z9.5
SEFA 1, manufacturer datasheets
EN 14175
Titled for fume cupboards
Tested as a fume hood
Lab manuals, older textbooks
NSF/ANSI 49
WHO Laboratory Biosafety Manual
Machine 01
Room air in across the sash at 0.3 to 0.5 m/s, then exhausted outside or carbon filtered.
Machine 02
HEPA downflow over the work, plus an inward air barrier at the opening.
Four of the five names resolve onto MACHINE 01. The fifth resolves onto MACHINE 02, a machine that protects the opposite thing. HEPA captures airborne particulates only, never gases or vapours, so neither substitutes for the other.
FIG. 04Five names in common Indian and international use, resolved onto the two machines they actually denote. The highlight walks one name at a time. Under reduced motion every link is lit at once.
Read the table below as a translation table. Find the name in front of you. The row tells you who tends to use it, where it came from, and which document you are most likely holding.
Treat the first four as synonyms. Read the fifth as a question, not as an instruction. If a specification says “safety cabinet” without saying which kind, ask before anyone quotes against it.
| Name | What it refers to | Where the name came from | The document you meet it in |
|---|---|---|---|
| Fume cabinet | the ventilated chemical enclosure | Indian and British commercial usage | lab-furniture catalogues, Indian tender and purchase documents |
| Fume hood | the same enclosure | American English, now the default technical term | ASHRAE 110, ANSI/AIHA Z9.5, SEFA 1, manufacturer datasheets |
| Fume cupboard | the same enclosure | British English, the formal term in European standards | EN 14175, which is titled for fume cupboards, and UK and EU specifications |
| Fume chamber | the same enclosure, informally | Indian academic and teaching labs | university inventories, lab manuals, older textbooks |
| Safety cabinet | ambiguous, two unrelated products share it | biology labs and fire-safety codes, respectively | may mean a biological safety cabinet or a flammable storage cabinet |
| Biological safety cabinet (BSC) | a different device, for biohazards | biosafety practice | NSF/ANSI 49, WHO Laboratory Biosafety Manual |
FIG. 05Read across: the name in front of you, what it refers to, and the document you are most likely holding.
None of this is anybody's mistake. Two engineering traditions named the same object, and both names travelled.
British English
Two vocabularies grew up in parallel and never merged. British laboratories called it a cupboard. That is what British English calls a tall enclosed unit with doors. The European standards bodies wrote their test method in British English. That is why EN 14175 governs fume cupboards.
American English
American laboratories called the same thing a hood. They borrowed the word from the extraction hoods above industrial workstations. ASHRAE, ANSI and SEFA all publish in American English. So “fume hood” is what the technical literature settled on.
India inherited both
India inherited both. One project can carry a fume cupboard in the specification, a fume hood on the datasheet and a fume cabinet on the purchase order. All three describe a single unit. “Cabinet” comes from the furniture side of the trade, where the enclosure is sold alongside benches and sinks. So an Indian buyer can be perfectly correct in three different words on the same day.
The one that matters
A chemical hazard means a fume cabinet. A biological hazard means a biosafety cabinet.
Not by itself. What it changes is the document you are reading. It also changes the test the unit will be judged by.
The worry behind the question is fair. In most buying, a different word does mean a different product. Here it does not.
A specification written around EN 14175 expects a type test and an on-site containment test in that standard's format. One written around ASHRAE 110 expects a tracer-gas containment result. That result is quoted as-manufactured, as-installed or as-used. The same equipment satisfies both. Somebody just has to notice at quotation stage which framework the buyer is working in.
So when the words differ, check three things instead: the containment standard, ducted or ductless, and the internal materials against your chemistry. Those settle the specification. The name settles nothing.
Check these three instead
EN 14175 or ASHRAE 110. That decides the test the unit has to pass, and the format the result is reported in.
Where the air ends up. It decides the building work, the replacement air and the filter regime.
Matched against your chemistry. Acid, solvent and perchloric duty each want a different lining.
Two things decide whether an enclosure protects you. Neither of them is in its name.
Room air is pulled in across the opening left by the sash. It moves at a controlled face velocity, generally 0.3 to 0.5 m/s under ANSI/AIHA Z9.5 practice. That sweep carries vapour away from your breathing zone. When an enclosure stops containing, it is nearly always the airflow. And it is usually because nobody supplied the replacement air the room needs.
A ducted unit sends it outside through a blower and duct. It copes with broad and heavy chemistry, and it needs conditioned replacement air. A ductless unit passes the air through an activated-carbon filter and returns it to the lab. So it is only ever as safe as the match between that filter and your chemical list.
Known, stable, low-volume chemistry suits ductless. A changing list should be ducted out. So should anything with no smell to warn you when the carbon saturates. See ductless fume hood , and chemical fume hood for acid, polypropylene and perchloric duty.
Nothing exposes the vocabulary split faster than the standards themselves.
India has no single Indian Standard acting as “the” fume cabinet code. Any IS or BIS reference is confirmed per project.
What always applies is the discharge. CPCB (Central Pollution Control Board) emission expectations govern what may go up the stack. That decides whether a scrubber belongs on the exhaust.
Then there is the room around the enclosure. In a classified pharmaceutical or QC laboratory, that room is designed to ISO 14644. The relevant EU-GMP Annex 1 expectations apply to it as well. So do the Schedule M expectations. All three classify the room, not the enclosure.
You do not need to own any of these documents. You do need to know which one your specification was written from. That is the test your enclosure will be asked to pass.
Room classification lives with the room, not with the enclosure.
Names are one thing. The job in front of you is another. Find your work in the left column and follow the route.
If two rows look close, the hazard decides, not the wording. Chemical, biological and particle protection are three different enclosures. Only one of the three is a fume cabinet.
| What you are doing | What you need |
|---|---|
| Toxic, corrosive, flammable or strongly odorous chemicals | A fume cabinet. The engineering is on fume hood |
| Live cultures, infectious agents or other biohazards | A biosafety cabinet, which is not a fume cabinet |
| Keeping a sterile sample or component free of particles | A laminar airflow unit, which blows clean air over the work |
| Storing solvents when nobody is working with them | A fire-rated storage cabinet, not laboratory ventilation |
| No duct route, and a known, stable chemical list | A ductless fume hood, carbon matched to that list |
| Acid digestion, or perchloric acid work | An acid, polypropylene or perchloric wash-down unit, see chemical fume hood |
| Specifying enclosures across a whole lab fit-out | Sizing and bench integration, on laboratory fume hood |
| Working out the cost before you ask | What drives the number, on fume hood price |
FIG. 06Chemical, biological and particle protection are three different enclosures. Only one of the three is a fume cabinet.
An enclosure is only ever as good as the room it has to work in. That is the part we can answer for, because we build the room as well.
Fabtech specifies, supplies, installs, integrates and validates fume cabinets for Indian laboratories. They stand alone on a bench, or they go inside a laboratory or cleanroom we are building. Configurations are ducted, ductless and chemical-resistant
The part that decides whether an enclosure is any good is the part we own end to end. Internal materials are matched to your chemistry. The exhaust and replacement air are sized so the unit genuinely contains. Discharge stays within CPCB limits, and the unit fits the room's pressure regime.
Equipment-level validation and AMC follow where the project calls for them. Where the hazard is biological, the right enclosure is the biosafety cabinet , which Fabtech engineers and builds in-house.
Behind that sits Fabtech Cleanrooms, which has designed, built and validated more than 2,000 controlled environments across every industry that needs controlled air since 2004. That work runs under ISO 9001. Those rooms are built to stand up to inspection under EU-GMP, US-FDA, WHO-GMP and cGMP.
A named fume cabinet reference is available on request
Two questions are answered next door rather than here. Whether an enclosure needs ducting is on fume hood , and what drives the number is on fume hood price .
A fume cabinet is a ventilated enclosure for working safely with substances that give off harmful vapours, gases, dust or fumes. Room air is pulled in across the front opening, then exhausted outside or carbon-filtered. It protects the person working at it, not the sample.
Yes. They are two names for one piece of equipment. “Fume cabinet” is the wording on Indian and British purchase documents and in lab-furniture catalogues. “Fume hood” is the American term, used in ASHRAE 110, ANSI/AIHA Z9.5 and SEFA 1, and so in most datasheets.
None, in the equipment. “Fume cupboard” is British English and the formal term in the European standard EN 14175. “Fume hood” is American English, used in ASHRAE 110 and ANSI/AIHA Z9.5. The name tells you which standards framework the document came from, not which product to buy.
No, and this is the confusion worth catching. “Safety cabinet” is shorthand shared by two unrelated products. One is a biological safety cabinet, which protects against biohazards. The other is a flammable storage cabinet, a fire-rated cupboard for solvents that is never worked in. Ask which is meant.
A fume cabinet protects the operator from chemical vapours. It pulls the air away and exhausts or carbon-filters it. A biological safety cabinet protects the operator, the product and the environment from biohazards, using HEPA filtration. HEPA captures particulates only, never gases or vapours, so neither substitutes for the other.
“Fume chamber” is another name for a fume cabinet or fume hood. It is used mostly in Indian teaching and academic laboratories, and in older textbooks. It describes the same ventilated enclosure, which captures hazardous fumes at the point of use, away from the operator's breathing zone.
There is no single Indian Standard acting as the fume cabinet code. Indian projects are usually specified against ASHRAE 110 for containment, ANSI/AIHA Z9.5 for laboratory ventilation, or EN 14175 where the project has European parentage. What always applies is CPCB expectations for what leaves the exhaust stack.
Fabtech specifies, supplies, installs, integrates and validates fume cabinets for Indian laboratories, standalone or inside a laboratory or cleanroom it is building. The same team engineers the room, the exhaust and the replacement air, so the enclosure is specified to the lab it will sit in.
Send us the chemicals you handle and the room it has to sit in. We will name the right enclosure, and the standard it should be tested to, whatever your specification calls it.
