Contact Us

  • The Face Mask Store
  • 01749 938 160
  • Anglo Trading Estate, Shepton Mallet BA4 5BY Registered Company - 12448451 VAT Number - 351617117

About us

Put something nice about your company here...

Alpha Sentinel Half Mask

Was: £27.99
Now: £15.99
(Inc. VAT)
Was: £23.32
Now: £13.32
(Ex. VAT)
Adding to cart… The item has been added

Alpha Sentinel Half Mask

The Sentinel Half Face Mask is premium quality RPE that has been manufactured and assembled entirely in the UK by Alpha Solway. They are a brand you can fully trust, protecting people for over quarter of a century and remain one of the world’s fastest growing respiratory protection manufacturers.

Available in 3 sizes creating a tailored fit profile, superb fit and comfort for any workforce. The weight has been kept as low as possible to ensure user comfort throughout the day whilst still offering a high impact durable design you can rely on. 

All parts from this mask are removeable and replaceable, so you can easily keep your mask fully maintained as and when you need to.

Replacement filters available here


  • Available in 3 sizes
  • Well-balanced and light weight (140g), providing optimum wearer comfort
  • Low profile shape to maximise the field of vision and allow exceptional compatibility with other PPE
  • Premium quality elastic strap provides a secure high comfort fit and retains mask positioning
  • Easily cleaned and maintained with spare parts available
  • Quantitative face fit adapter available
  • Respirators are supplied with user seal check covers, which double as particulate retainers for combination filter


Head Harness

  • Fully adjustable head harness, offering easy fitting and adjustment, with a robust and trusted fit when in use

Exhalation Valve

  • The large exhalation valve reduces heat and moisture build up, providing low breathing resistance


  • Alpha Sentinel filters are fitted with a simple connection which easily click into position


  • Facepiece – TPE (Thermoplastic Elastomer)
  • Front Cover – ABS (Acrylonitrile butadiene styrene)
  • Head Harnes – TPE (Thermoplastic Elastomer)
  • Straps – Polyester
  • Neck Clasp – Polypropylene
  • Exhilation valve – Silicone
  • Inhilation valve – Silicone


  • See here


  • Tested to EN 140:1998
  • CE Certified
  • UKCA Approved
  • Product conforms to the requirement of: UK Regulation 2016/425 on PPE, brought into UK Law and amended & Regulation (EU) 2016/425 of the European Parliament and of the Council as Personal Protective Equipment (PPE)
  • Product Weight - 140g
Technical Information
Calculated at Checkout