Gerson 1750 N99 Particulate Respirator – NIOSH Approved, Molded Cup, Made in USA (Box of 20)

The Gerson 1750 N99 Particulate Respirator provides ≥99% filtration efficiency against non-oil-based airborne particles — four percentage points above the N95 standard — in a NIOSH-approved molded cup format. Manufactured in the United States, it is the unvalved entry in Gerson's N99 line, suited for environments where higher filtration efficiency is required by regulation, industrial hygiene programs, or individual risk assessment. Each box contains 20 respirators.

Construction and Materials

The 1750 uses Gerson's collapse-resistant double-shell molded cup construction. A soft foam nose cushion provides a comfortable, sealing fit at the bridge of the nose. The contoured nose clip — adjustable to the wearer's facial geometry — reduces fogging of safety glasses and prescription eyewear. Smooth latex-free polymer head straps do not catch on hair and require no pre-stretching. Construction is staple-free.

Compliance and Ratings

NIOSH approved for ≥99% filtration efficiency against non-oil-based airborne particles per 42 CFR Part 84. The N99 rating requires the filter to capture a minimum of 99 out of every 100 particles of the most penetrating particle size (~0.3 microns). This exceeds the N95 standard by approximately 4 percentage points, which translates to a 20% reduction in particle penetration through the filter.

Performance

In environments with fine dust, biological aerosols, or hazardous particulates at concentrations close to the permissible exposure limit, the N99 rating provides a meaningful additional margin. The unvalved design allows this respirator to be used in applications where source control is a consideration. The molded cup's structural rigidity maintains the face seal during extended wear and under physical exertion.

Strengths

• N99 NIOSH approval — ≥99% filtration against non-oil-based particles
• Collapse-resistant double-shell maintains structure during all-shift wear
• Soft foam nose cushion reduces pressure points during extended use
• Latex-free, staple-free construction
• Made in USA — ISO 9001:2015 certified facility

Limitations

• No exhalation valve — higher exhalation resistance than the valved 1760 model
• N-series rating does not address oil mist or oil aerosol environments
• N99 respirators are less commonly specified in standard industrial hygiene programs than N95 — verify that program requirements actually call for N99 before specifying

Recommended Use Cases

The 1750 is appropriate where regulatory requirements or industrial hygiene assessments specify N99 performance: certain pharmaceutical manufacturing environments, semiconductor fabrication, asbestos abatement with supplemental controls, and operations where the N95 assigned protection factor is insufficient for the measured airborne concentration.

Verdict

The Gerson 1750 is a well-built N99 molded cup respirator for the specific niche of environments that require higher than N95 filtration in an unvalved format. Buyers whose hazard assessment is satisfied by N95 protection should choose the more widely stocked Gerson 1730. For N99 with an exhalation valve, the Gerson 1760 is the direct alternative.

FAQ

What is the difference between N95 and N99 filtration?

N95 filters ≥95% of particles at the most penetrating particle size. N99 filters ≥99%. This means N99 allows approximately 1% particle penetration versus 5% for N95 — a roughly 80% reduction in filter penetration. In practice, most occupational health programs specify N95 unless a hazard assessment identifies a need for the higher filtration margin.

Is the Gerson 1750 approved for asbestos work?

OSHA's asbestos standards (29 CFR 1926.1101 for construction) permit N100, R100, or P100 respirators for the highest asbestos exposure levels, and N95 as the minimum for lower concentrations. The 1750's N99 rating meets or exceeds the N95 minimum. Confirm the specific OSHA table requirement for the measured exposure level before specifying.

How many 1750 respirators are in a case?

Each box contains 20 respirators. A standard case contains 12 boxes, totaling 240 units.

Does the Gerson 1750 have a valve?

No. The 1750 is an unvalved design. For N99 filtration with an exhalation valve, see the Gerson 1760.

Can N99 respirators be used in lieu of N100 or P100?

N99 and N100 have different assigned protection factors under OSHA. N99 disposable respirators share the N95 APF of 10. Full-facepiece respirators with N100 or P100 filters have an APF of 50. Substituting N99 for N100 in a full-face application is not equivalent from a protection factor standpoint.