Product details

Full specifications

Model: ST-AGX-1

Construction: 5 layers, two spunbond outer layers, high-efficiency core, filter density layer, electrostatic cotton center

Capture: particles below 2.5 microns, the electrostatic center traps nano-scale particles 100× smaller than a human hair

Performance: up to 90% particle exposure reduction in the TS-AX

Service life: up to 24 hours continuous, or 1–2 weeks occasional use per pad

Pad size: 4.25 × 3 in (10.5 × 7.5 cm)

Pack: 10 pads, approximately 240 hours of protection

Compatibility chart

The ten-second swap.

  • Fits: the Tesoro TS-AX half mask, and the older ST-AG if you've owned one for years
  • The motion: open the compartment, slide the old pad out, new one in, sealed. Ten seconds, sawdust still on your hands
  • Not for the cartridge masks: TS-100, TS-100X and TS-M101 use threaded filters, not pads
  • Know the lane: five layers stop particles brilliantly and vapors not at all, there's no carbon here. Spraying paint or solvents? That's TS-100 or TS-M101 work
  • The cadence: fresh pad every 24 work hours, or every week or two of casual use
Works with

A pack of these covers the whole dusty calendar:

  • Workshop: sanding, sawing, routing, turning, and the sweep-up afterward
  • Site days: drywall sanding, concrete and cement dust, demolition cleanup
  • Outdoors: mowing, leaf blowing, tilling, dry-summer landscaping
  • The seasons: spring pollen, harvest dust, smoky-sky autumn days
  • Craft + hobby: plaster, chalk, clay, casting cleanup

Hand-off line: anything with fumes, vapors or a chemical smell belongs to the carbon-filter masks. Pads do particles, and they do them very well.

Included in the Box

  • 10 × PM2.5 five-layer filter pads, sealed pack

When should I replace my filter?

Replace your filter when breathing feels harder, you notice odor or taste breakthrough, the filter looks damaged, or it has been used for an extended period in a dusty, chemical, or vapor-heavy environment.

Can I buy replacement filters separately?

Yes. TESORO sells replacement filters for each compatible mask, so you can keep your respirator ready without replacing the full mask.

Are TESORO masks reusable?

Yes, TESORO’s core respirator masks are reusable. Filters are replaceable and should be changed based on use, exposure level, and condition.

What is the difference between full-face and half-face respirators?

Full-face respirators cover your eyes, nose, and mouth for broader protection and visibility. Half-face respirators cover the nose and mouth and are useful for many work, DIY, and general protection tasks.

Do I need eye protection too?

For painting, spraying, dust-heavy work, or chemical exposure, eye protection is often important. TESORO’s TS-M101 includes a half-face respirator and goggle set for users who need both respiratory and eye coverage.

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