Moldex 2310N99 Disposable Particulate Respirator — Exhale Valve

Moldex 2310N99 Disposable Particulate Respirator — Exhale Valve — NIOSH-Approved N99 Disposable Respirator

Moldex 2310N99 Disposable Particulate Respirator — Exhale Valve steps above the N95 class to NIOSH N99 — at minimum 99% non-oil particulate filtration — while adding an exhalation valve for cooler wear, making it the right choice when N95's 95% baseline isn't sufficient for fine non-oil dust or sub-micron particulates but a reusable half-face respirator isn't practical for the task.

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The Moldex 2310N99 Disposable Particulate Respirator — Exhale Valve is a NIOSH-approved N99 filtering facepiece respirator from Moldex, listed on the NIOSH Certified Equipment List. Read the complete disposable respirator guide to compare NIOSH filter classes before ordering.

Key Features — 2310N99

• NIOSH N99 approval — minimum 99% filtration of non-oil particulates (higher than N95)
• Exhalation valve routes warm exhaled air out of the mask for cooler extended wear
• Molded cup design maintains shape and seal throughout the work shift
• Dual elastic headbands with adjustable nose clip for secure facial seal
• No oil resistance — appropriate for non-oil particulate environments only

Specifications

Typical Applications

• Fine non-oil dust where N95 efficiency isn't sufficient; browse all N99/N100 respirators
• Sub-micron metallic fumes in non-oil environments
• Pharmaceutical fine powder and lab environments; see all disposable respirators
• Read our N95 vs P100 guide to understand when N99 vs N95 vs P100 is right

Hazard Coverage — Moldex 2310N99 Disposable Particulate Respirator — Exhale Valve

The Moldex 2310N99 Disposable Particulate Respirator — Exhale Valve is NIOSH-approved under 42 CFR 84 Subpart K as an N99: ≥99% filtration of non-oil particulates — higher than N95 without oil resistance. Appropriate for fine non-oil dust and sub-micron metal fumes where N95 efficiency isn't sufficient. Browse all N99 and N100 respirators.

Not oil-resistant — for oil aerosols use R95 or P100. See our N95 vs P100 comparison.

Compare 2310N99 vs 4700N100 vs 4701N100

Frequently Asked Questions

What does the exhalation valve on the 2310N99 do?

The exhalation valve opens when you breathe out, allowing warm humid air to exit directly rather than passing back through the filter media. This reduces heat and moisture buildup inside the mask — a significant comfort advantage during extended or physically demanding wear. Inhalation closes the valve, so all inhaled air is filtered normally.

Does the valve on the 2310N99 reduce filtration efficiency?

No. The exhalation valve does not affect inhalation filtration efficiency — the 2310N99 still filters inhaled air at the rated N95/R95/P100 level. The valve only controls exhaled air routing. Note: because exhaled air is not filtered, valved respirators are not appropriate as source-control devices (e.g., in surgical environments or when protecting others from the wearer).

Is a valved respirator like the 2310N99 acceptable for source control?

No. A valved respirator directs exhaled air outward unfiltered and is not appropriate where the wearer must also protect others (surgical settings, some healthcare environments). Facility policies may prohibit valved masks in sterile or at-risk patient areas. For source-control requirements, use an unvalved N95 or a surgical N95.

What does N99 mean for the 2310N99?

N99 indicates NIOSH approval for ≥99% filtration of non-oil-based particles — higher than the N95 standard but without oil resistance. The 2310N99 is appropriate when N95's 95% efficiency isn't enough for fine non-oil particulates. Browse all N99 and N100 respirators.

How is the 2310N99 different from an N95?

The 2310N99 offers 99% filtration vs N95's 95% minimum — useful for finer particles like sub-micron metal fumes, extremely fine dust, or environments where a higher protection factor is desired without stepping up to a reusable half-face respirator. Neither N99 nor N95 provides oil resistance; for oil aerosols, choose R95 or P100.

Is the 2310N99 NIOSH-approved?

Yes. The 2310N99 is NIOSH-approved under 42 CFR 84 Subpart K as an N99 filtering facepiece respirator. Confirm the TC approval number on the NIOSH Certified Equipment List.

Does the 2310N99 require a fit test?

Yes. OSHA 29 CFR 1910.134 requires fit testing before first occupational use. Our fit testing guide covers both qualitative (QLFT) and quantitative (QNFT) protocols. A proper facial seal is essential for rated N99 performance.

Can the 2310N99 be used in oil mist environments?

No. N99 class respirators are rated for non-oil particulates only. In oil mist environments (spray painting, machining, oil-mist coolants), use an R95 (oil-resistant, one shift) or P100 (oil-proof, no time limit). See our N95 vs P100 comparison guide.

Is the 2310N99 reusable?

No, the 2310N99 is a disposable N99 respirator. Discard when soiled, damaged, or when breathing resistance increases. Do not wash or attempt to reconstitute the filter.

What hazards does the 2310N99 NOT protect against?

The 2310N99 does not filter gases, vapors, or chemical vapors — only non-oil particulates. For vapor hazards, you need a respirator with chemical cartridges. It also does not protect against oxygen-deficient atmospheres.

How many come in a box?

See the product title for pack count. Browse all N99 and N100 respirators for size options.

What is the shelf life of the 2310N99?

Typically 5 years from production date in original sealed packaging stored in cool, dry conditions. Check the expiration date on the box.