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3M 4279 Half Mask

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The 3M 4279 half-mask protects from organic gases, vapours, particulates and acid gases. It is a hugely popular product due to its single-piece design, maintenance-free and simple-to-use design. A central valve ensures users do not become too hot and minimises breathing resistance.
SKU#:
2011
Availability: In stock
£30.80
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3M 4279 Half Mask ABEK1 P3 The 3M 4279 respirator assures protection against organic gases, vapours, acid gases, ammonia and particulates. Incorporating a highly adjustable head cradle and neck straps, this product comfortably fits any head size. The innovative single-piece design of all the 4000 series masks makes them hugely popular since they are maintenance-free and simple to use since they do not require any additional filters or parts. In addition, the central valve ensures the user is less likely to experience breathing resistance of overheat in the mask.
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Christmas-New Year Dispatch Dates:

  • 21st December midday cut off.

Any orders placed after this date will be processed.

  • 28th December midday cut off.
  • 29th December midday cut off.
  • Next dispatch date: 2nd January 2024.
    • Whilst standard delivery is stated as 1-3 days we are currently delivering over 99% of orders the next business day as a standard service if placed before 2.30 pm.

Delivery Options:

  • Standard Delivery: (1-3 business days) (£ 5.75 - £ 6.20)
  • Next Business Day Delivery: (Order Must be placed before 2 pm) (£ 9.50 ex vat)
  • Next Day Working Day Delivery Pre 12 delivery (Order Must be placed before 2 pm): £ 11.50 ex vat
  • Next Working Day Delivery Pre 10.30 delivery (Order Must be placed before 2 pm): £ 13.95 ex vat
  • Weekend Delivery Options:
  • Saturday Delivery: (Order Must be placed before 12 pm) £ 22.50 ex vat

FREE DELIVERY OVER £ 75 NET

  • The free delivery over £ 75 net is only available for UK mainland.
  • Deliveries to Islands and highlands are a 2-3 day delivery option only & charged at £ 16 ex vat.
FREE DELIVERY ORDERS OVER £70

Excludes Islands, Highlands & Channel Islands.

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Frequently Asked Questions

Protective masks, respiratory equipment (RPE) is divided into 2 main areas: (A) Filtering face Pieces (FFP) & (B) Air Supplied Equipment.

Additional information can be found within each category section:

01: What's the difference between FFP1, FFP2 and FFP3 Disposable masks?

The European safety standard EN149: 2001 + A1: 2009 for disposable protective masks includes performance tests in filter penetration; extended exposure test; flammability; breathing resistance and total inward leakage. Masks that meet this standard are classified according to their filtering efficiency & protection as FFP1, FFP2, FFP3.

FFP1 (80% Filter efficiency) Protection from non‐toxic contaminants in concentrations up to 4 x OEL or 4 x APF. Particles filtered are larger than 5 microns Dust, Fumes, Aqueous mists, Oils based mists.

FFP2(94% Filter efficiency) Protection from low to average toxicity contaminants in concentrations up to 12 x OEL or 10 x APF . Particle size filtration 2-5 microns - Fine dust, Aqueous / Oil-based mists.

FFP3 (99% Filter efficiency) Protection from toxicity contaminants in concentrations up to 50 x OEL or 20 x APF. Particles size less than 2 microns - Very fine dust, Fibres, Aqueous/ Oil-based mists.

Dolomite test for clogging signifies a mask with low breathing resistance in very dusty environments.

02: What are the safety standards for Reusable Half Masks?

Half mask respirators (Reusable masks) are required to meet the European standards EN140, EN141, 143 and EN371.

The European standard - EN140 covers the technical specifications for half masks. A half mask is defined as covering the nose, mouth & chin.

EN141 European standard -Gas filters for protection against specified gases and vapours or combined filters for protection against solids and/or liquid particles & specified gases and vapours.

Filters are classified as Class 1, Class 2 & Class 3 .

EN143 European standard - Filters for protection against particulates. These are classified according to their filtering efficiency P1, P2 & P3. P3 filters provide the highest level of filtration.

EN371 European standard - AX filters.

P1 (80% Filter efficiency) Protection from non‐toxic contaminants in concentrations up to 4 x OEL or 4 x APF. Particles larger than 5 microns Dusts, Fumes, Aqueous mists, Oils based mists.

P2(94% Filter efficiency) Protection from low to average toxicity contaminants in concentrations up to 12 x OEL or 10 x APF . Particle size filtration 2-5 microns - Fine dust, Aqueous / Oil-based mists.

P3(99% Filter efficiency) Protection from toxicity contaminants in concentrations up to 50 x OEL or 20 x APF. Particles size less than 2 microns - Very fine dust, Fibres, Aqueous/ Oil-based mists.

03: What are the safety standards for Full Face Masks?

EN136 European standard for Full Face masks. Negative pressure, powered or supplied air systems.

Full face masks are classified as:

Class 1 - Light Duty & Maintenance

Class 2 – General Duty & Maintenance

Class 3 – Heavy Duty – Fire Service

Full face masks when used with particulate filters provide the following APF protection levels. P2 filter APF 10 & P3 filter APF 40 when used with a full face mask.

04: What are the different types of powered air respirators?

The European safety standards for powered air respirators are the EN146 & EN12941 standard with the powered respirators classified into three protective categories, TH1, TH2 & TH3. (Turbo Hood)

The powered respirator includes hood & powered air unit.

The powered air respirators are a recommended solution as a dust mask for bearded personnel.

TH1P provides an APF protection factor of 10 (APF 10) & TH2P provide an APF protection factor of 20 (APF 20)

05: What is an air-fed respirator?

European standards EN270 & EN1835 incorporates the Helmet/hood (Covers the face) supplied with breathable air from a compressed air unit as well as the respirators operation. The adjustable continuous flow valve must incorporate a low warning device.

Standard EN1835 covers three classes LDH1, LDH2 & LDH3 (LDH=Light Duty Hose). The maximum permissible length of air line (Valve (Regulator) to the Air source (Compressor) is 30 metres EN270) & 10 metres EN1835.