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FIGHTECH Carbon filter dust mask, large

The only filtration efficiency on either half of this shelf, with the laboratory named — and no filter class.

Fightech reusable carbon filter dust mask, product photograph

FIGHTECH Carbon filter dust mask, large

The only filtration efficiency on either half of this shelf, with the laboratory named — and no filter class.

Filter class
Not published by the maker. · No N95, R95, P100 or FFP designation appears
Filtration efficiency
99.941 per cent average, published, with particulate caught down to 0.1 micron · Stated tested at Nelson Laboratories, USA — the only efficiency figure and the only laboratory on either half of this shelf
Filter type
Active carbon, included, stated interchangeable and reusable along with the exhaust valves
Stated limit
Non-toxic dust, fumes, common airborne irritants and other non-oil-based particles · Stated for non-oil-based paint only
Straps
An adjustable upper strap with internal silicone grip lines, stated to prevent slipping
Sizes
The title says 2 sizes and names Large; a feature says it comes in 3 sizes
Body
Elastic material, adjustable, stated to fit most head types
Part number
850025430944
Amazon reference
B0DZJ3QGBT
EAN
0850025430944
  • Publishes an efficiency figure to three decimal places and names the laboratory
  • States what it is not for — oil-based particles — which a class letter also implies
  • No filter class, which is what the shelf compares respirators on

Best for: Sanding and shop clean-up, by somebody who will read the efficiency figure and not the word carbon

≈ $21
Check price on Amazon

Specifications

Filter class
Not published by the maker. · No N95, R95, P100 or FFP designation appears
Filtration efficiency
99.941 per cent average, published, with particulate caught down to 0.1 micron · Stated tested at Nelson Laboratories, USA — the only efficiency figure and the only laboratory on either half of this shelf
Filter type
Active carbon, included, stated interchangeable and reusable along with the exhaust valves
Stated limit
Non-toxic dust, fumes, common airborne irritants and other non-oil-based particles · Stated for non-oil-based paint only
Straps
An adjustable upper strap with internal silicone grip lines, stated to prevent slipping
Sizes
The title says 2 sizes and names Large; a feature says it comes in 3 sizes
Body
Elastic material, adjustable, stated to fit most head types
Part number
850025430944
Amazon reference
B0DZJ3QGBT
EAN
0850025430944

Every figure below names its source. Each one is a manufacturer specification read off the listing itself. The judgments are ours.

Ninety-nine point nine four one per cent

Published, to three decimal places, with particulate caught down to 0.1 micron, and the laboratory named.

Nothing else on either half of this shelf publishes an efficiency figure at all.

What it means: on the test that laboratory ran, the filter stopped all but six parts in ten thousand of the challenge aerosol.

The class letter is the specification

A respirator is bought on what its filter stops, and that is a class, not an adjective.

In Europe the scale is FFP1, FFP2 and FFP3, and the published pages on this shelf are chosen on it: FFP3 — the class hardwood dust warrants. In the United States the equivalents are N95, R95 and P100, tested and approved under a federal standard.

A listing that says carbon filter, dual filter or ten replacement filters has named a construction and not a performance. None of the three American respirators on this shelf publishes a class, and this site reports exactly what each page carries.

And an efficiency figure is not a class

A class letter is a defined test, a defined particle size, a defined flow rate and a defined approval — and it travels. FFP3 means the same thing from every maker on earth.

An efficiency percentage from one laboratory means what that test measured.

This page has the percentage and the laboratory and not the class. The published FFP3 pages on this shelf have the class and no percentage.

Neither has both.

Two sizes, or three

The title: Dust Mask 2 Sizes - Large.

The fifth feature: comes in 3 sizes and can be adjusted to meet most head types.

A mask protects only if it seals, so the size is the most consequential figure on the page — and the page gives two answers.

Non-oil-based

Stated, twice, and it is to the listing’s credit.

Oil-based aerosols — thinned spray paint, oil mist, some lubricants — degrade a medium that handles dry dust perfectly well. That is exactly why the American class system has an N for non-oil and a P for oil-proof.

For woodworking, the N end is the right end: sawdust is dry.

For spraying a solvent finish it is not — and the two respirators beside this one on this shelf are both sold for spraying, and neither names a class.

Availability

Read on the day this page was built: $21 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-10-07. The live price is at the top of the page.

What comes up most often

What does 99.941 per cent mean here?

That on the test the laboratory ran, the filter stopped all but six parts in ten thousand of the challenge aerosol on average. It is a real figure and it is published with a laboratory name, which nothing else on either half of this shelf manages. What it is not is a class: a class letter means a defined test, a defined particle size, a defined flow rate and a defined approval, and it travels — an FFP3 or a P100 means the same thing from every maker. An efficiency percentage from one laboratory means what that test measured. The number is above as published, and so is the absence of the class.

Two sizes, or three?

The title reads "Dust Mask 2 Sizes - Large" and the fifth feature reads "comes in 3 sizes and can be adjusted to meet most head types". Both are printed above. The likeliest reading is that the range has three sizes and this listing offers two of them, with Large being the one in the title — but a mask is only protective if it seals, and the size is therefore the most consequential figure on the page. It is the one a buyer has to resolve before ordering, and the page gives two answers.

Does the oil-based limit matter?

Yes, and publishing it is to the listing's credit. Oil-based aerosols — spray paint thinned with solvent, oil mists, some lubricants — degrade a filter medium that handles dry dust perfectly well, which is exactly why the American class system has an N for non-oil and a P for oil-proof. The listing states non-oil-based paint and non-oil-based particles, which places it at the N end. For woodworking that is the right end: sawdust is dry. For spraying a solvent finish it is not, and the two respirators beside it on this shelf are sold for spraying without naming a class at all.

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