Gerson 1845 R95 Particulate Respirator with Valve, Gasket, and Nuisance Vapor Relief (Box of 5)

The Gerson 1845 R95 Particulate Respirator is the specialty combination variant in Gerson's R95 line, adding an activated carbon layer that provides nuisance-level comfort relief against organic vapor, acid gas, and ozone to the core R95 oil-aerosol-resistant particulate filter. NIOSH approved for ≥95% filtration against solid and liquid aerosols including oil-based, with a full foam inner gasket, adjustable head straps, and an oversized exhalation valve for sustained industrial wear. Each box contains 5 respirators.

Construction and Materials

The 1845 is built on the 1840's molded cup platform with the addition of an activated carbon inner layer. The flame-retardant outer shell protects against spark contact in hot-work environments. The full foam inner gasket encircles the entire face contact perimeter for an improved peripheral seal over varied facial profiles. Heavy-duty adjustable head straps provide a customized fit across a broad workforce. The oversized exhalation valve expels warm exhaled air at reduced opening resistance. Latex-free, staple-free construction.

Compliance and Ratings

NIOSH approved under 42 CFR Part 84. R95 classification certifies ≥95% filtration efficiency against solid and liquid aerosols including oil-based aerosols, with time-limited (R-series) oil mist approval. The activated carbon provides nuisance-level organic vapor, acid gas, and ozone comfort relief only — it does not carry cartridge respirator certification under 42 CFR Part 84 cartridge standards. The 1845 is not a substitute for a cartridge respirator in environments with OV/AG concentrations at or above OSHA PEL.

Performance

The 1845 targets operations where oil-aerosol R95 protection is combined with mild chemical odor exposure — welding with lubricant contact, metal cutting with cutting fluid mist, foundry operations with chemical binder burning, and light chemical processing. The ozone relief capability is particularly relevant for welding and UV-generating operations where low-level ozone is a byproduct. The full foam gasket provides a better peripheral seal than standard hard-edge molded cups, which matters in the R95/OV-AG combination market where the wearer profile tends toward demanding industrial environments.

Strengths

• R95 NIOSH certification — covers oil-based and non-oil-based aerosols
• Activated carbon provides nuisance relief for OV, AG, and ozone simultaneously
• Full foam inner gasket improves peripheral seal for varied facial profiles
• Flame-retardant outer shell for hot-work environments
• Oversized exhalation valve reduces heat and humidity inside the mask

Limitations

• OV-AG-ozone carbon layer provides nuisance relief only — not approved cartridge respirator protection
• R-series time-limited designation for oil mist — not P-series (unlimited) approval
• Higher per-unit cost than standard R95 designs; justified only when carbon nuisance relief is needed
• Exhalation valve means exhaled air is unfiltered — not for source-control applications

Recommended Use Cases

The 1845 is most appropriate for welding operations where ozone or cutting-fluid aerosols are present alongside metal fume, foundry environments with chemical binder combustion products, manufacturing operations with oil mist plus mild solvent or chemical odors, and any R95 application where carbon nuisance relief improves mask acceptance and wearer compliance.

Verdict

The Gerson 1845 is the highest-specification combination respirator in Gerson's disposable line: R95 oil-aerosol filtration, full foam gasket, flame-retardant shell, and OV-AG-ozone carbon relief in a single SKU. Buyers whose applications require only particulate protection without chemical odor relief should specify the less expensive Gerson 1840. For applications where chemical concentrations exceed nuisance levels, a cartridge-based reusable respirator is required.

FAQ

What chemicals does the Gerson 1845 provide relief against?

The activated carbon layer provides nuisance-level comfort relief against organic vapors, acid gases, and ozone. This addresses odor and mild irritation at concentrations well below OSHA permissible exposure limits. It does not provide certified cartridge-level protection against any of these chemical classes.

Why is ozone relief specifically listed for the 1845?

Welding and arc cutting operations generate ozone as a byproduct of UV radiation reacting with atmospheric oxygen. The 1845's activated carbon is effective at adsorbing ozone in addition to organic vapors and acid gases, making it appropriate for welding operations where ozone is a documented byproduct.

How does the 1845 compare to the 1840?

The 1845 adds an activated carbon layer for OV-AG-ozone nuisance relief to the 1840's platform. Both use a full foam gasket and adjustable straps. The 1840 is the appropriate choice when chemical nuisance relief is not required; the 1845 is appropriate when it is.

What is the box and case quantity for the Gerson 1845?

Each box contains 5 respirators. A standard case contains 10 boxes (50 units total).

Is the Gerson 1845 approved for asbestos abatement?

OSHA's asbestos standards require at minimum N100, R100, or P100 for the highest asbestos exposure levels. The 1845's R95 rating does not meet the R100 or P100 requirement for maximum asbestos exposures. Verify the applicable OSHA table level for the measured asbestos concentration before specifying.