Honeywell North 550030 Series Half Mask Respirator 550030S 550030M 550030L

Honeywell North 550030M Half Mask Respirator — North 5500 Series, NIOSH TC-23C, APF 10, Medium Size, North Bayonet Cartridge System

Short answer: The North 550030M is a NIOSH TC-23C approved half-face respirator carrying APF 10 under OSHA 1910.134 Appendix A. It uses the North bayonet cartridge system — compatible with the full North cartridge library including OV, AG, P100, combination, and mercury vapor cartridges. The 5500 delivers the same NIOSH compliance and North bayonet cartridge access as the premium 7700 series at a lower price point — the right choice when the 7700's low-profile welding-helmet feature is not required. Select medium after OSHA-required fit testing confirms it as the correct size — medium is the recommended starting size for most workers.

Honeywell North 550030M Half Mask Respirator — Medium | North 5500 Series

Reviewed by the WC Safety Editorial Team — PPE specialists with hands-on experience across industrial, construction, chemical, and healthcare environments. Last updated: May 2026.

The Honeywell North 550030M is the medium-size half-mask respirator in the North North 5500 Series. It carries NIOSH 42 CFR 84 TC-23C approval and delivers an Assigned Protection Factor of 10 per OSHA 29 CFR 1910.134 Appendix A when properly fit-tested. The 550030M uses the North bayonet cartridge connection, providing access to the complete North cartridge library — particulate P100, organic vapor, acid gas, combination cartridges, and specialty mercury vapor protection. The 5500 series provides the same North bayonet cartridge compatibility and NIOSH compliance as the premium 7700 series in a more economical package — appropriate for programs where the 7700's low-profile welding-helmet feature is not required. OSHA 1910.134(f)(2) requires fit testing before operational deployment regardless of size selected.

Key Features — Honeywell North 550030M

• North bayonet cartridge system — same cartridge access as the 7700: The 5500 uses the same North bayonet twist-lock cartridge fitting as the premium 7700 series, giving workers access to the complete North cartridge library — OV, AG, P100, combo cartridges, and specialty mercury cartridges — at a lower facepiece cost
• Silicone face seal construction: The 5500 facepiece is constructed from durable silicone that resists degradation from oils, solvents, and industrial contaminants. Silicone maintains its flexibility and seal geometry across a wide temperature range, making it appropriate for both cold and warm industrial environments
• Value-tier compliance: The 5500 carries the same NIOSH TC-23C approval and OSHA APF 10 as the premium 7700 series — the compliance standing is identical. For programs where budget is a constraint and the low-profile welding-helmet feature of the 7700 is not required, the 5500 delivers full compliance at lower cost
• Adjustable multi-strap head harness: The adjustable head harness distributes facepiece weight evenly and allows precise tension adjustment for workers with different head dimensions — a properly adjusted harness reduces face seal pressure points during full-shift wear
• NIOSH TC-23C, APF 10: The 550030M meets the NIOSH approval requirements for half-face tight-fitting air-purifying respirators under 42 CFR Part 84. APF 10 per OSHA 1910.134 Appendix A means it is appropriate for environments up to 10× the OEL — the standard level for half-masks in OSHA-governed workplaces
• Complete North cartridge library access: The North bayonet connection gives the 550030M access to every North bayonet cartridge — from standalone P100 particulate filters to the 75852P100L mercury vapor combination cartridge, covering virtually every industrial gas, vapor, and particulate hazard. Cartridge platforms are brand-specific: North bayonet cartridges do not fit 3M, MSA, or Moldex respirators

Applications — When to Use the North 550030M

• General industrial and manufacturing: The 5500 is appropriate for general manufacturing environments where airborne concentration does not exceed 10× OEL and the low-profile welding-helmet feature of the 7700 is not required. Select cartridges based on the specific hazard identified in your site hazard assessment
• Construction and trades: Silica-generating work (concrete cutting, grinding), lead paint abatement, and asbestos in pre-1980 buildings all require P100 filtration. The 7580P100 P100 on the 5500 provides NIOSH-compliant APF 10 particulate protection for these operations
• Chemical handling and maintenance: The 5500 with appropriate North cartridge (OV, AG, OV/AG) provides gas and vapor protection for maintenance, chemical handling, and cleaning operations — same cartridge coverage as the 7700 at lower facepiece cost
• Spray painting and coating operations: OV/P100 or OV/AG/P100 protection from 7581P100L or 7583P100L on the 5500 covers solvent vapors and paint overspray particulate in lower-intensity painting environments
• Cost-sensitive multi-worker programs: For operations requiring many respirators across a workforce, the 5500 reduces per-unit cost while maintaining identical NIOSH compliance and North bayonet cartridge compatibility — a practical choice for safety managers balancing budget and compliance requirements

Compatible Cartridges — North Bayonet System

The North 550030M accepts all North bayonet cartridges and prefilters. Select based on the documented hazard profile from your site industrial hygiene assessment:

North bayonet cartridges are not compatible with 3M, MSA, Moldex, or other brands. See the complete lineup: North Respirator Cartridges & Filters at WC Safety →

For cartridge selection guidance by job site: North Respirator Cartridge Guide 2026 →

North 5500 Series — All Sizes

North 550030M vs. Alternatives

Cartridge platforms are brand-specific — North, 3M, MSA, and Moldex bayonet systems are not interchangeable. All half-masks listed carry APF 10 when properly fit-tested per OSHA 1910.134 Appendix A.

OSHA Compliance & Fit Testing

All Honeywell North half-mask respirators carry NIOSH 42 CFR 84 TC-23C approval — the NIOSH classification for tight-fitting half-face air-purifying respirators. Under OSHA 29 CFR 1910.134 Appendix A, a properly fit-tested half-mask carries an Assigned Protection Factor of 10.

• Written respiratory protection program: Required under OSHA 1910.134(c) before any worker uses a respirator operationally — must include hazard assessment, written program, medical evaluation, fit testing, and cartridge change-out procedures
• Medical evaluation first: OSHA 1910.134(e) requires a completed medical questionnaire evaluated by a PLHCP before fit testing or operational use — no exceptions
• Annual fit testing: OSHA 1910.134(f)(2) mandates annual qualitative (QLFT) or quantitative (QNFT) fit testing — required whenever the facepiece model or size changes as well
• User seal check every use: Positive and negative pressure seal checks per OSHA Appendix B-1 must be performed each time the respirator is donned before entering the work area
• Cartridge change-out schedule: OSHA 1910.134(d)(3)(iii) requires a written schedule based on objective data — never rely on odor breakthrough as the change indicator
• APF 10 ceiling: Half-masks are appropriate only when airborne concentrations do not exceed 10× the OEL. If your hazard assessment documents concentrations above 10× OEL, a full-face respirator (APF 50) or SCBA is required

Who Needs the Medium Size?

The medium is the recommended starting size for most adult workers in North 7700 and 5500 programs. If OSHA-required fit testing confirms an inadequate seal in medium, move to small (550030S). The medium covers the majority of adult facial profiles — if unsure, always begin here.

Important: Do not select size based on general body size. Facial geometry determines respirator fit. The 550030S, 550030M, and 550030L are identical in every respect — NIOSH approval, APF, cartridge compatibility — except facepiece geometry. OSHA 1910.134(f)(2) requires annual fit testing regardless of size chosen.

Frequently Asked Questions — Honeywell North 550030M

How does the North 5500 compare to the North 7700?

Both the North 5500 and 7700 carry NIOSH TC-23C approval, APF 10, and use the same North bayonet cartridge system — compliance and cartridge access are identical. The 7700 is the premium version: soft non-allergenic silicone, low-profile design for under-welding-helmet use, and higher comfort for full-shift wear. The 5500 provides the same compliance at a lower price point and is the right choice when the 7700's low-profile welding feature is not required. See: North 770030M (7700 Series Medium).

Can I use 3M cartridges on the North 5500?

No. The North 5500 uses the North bayonet twist-lock connection — a different geometry than 3M's bayonet. These systems are not interchangeable. All cartridges used on the 5500 must be North-branded bayonet cartridges. See: North Cartridges & Filters at WC Safety →.

What NIOSH approval does the North 5500 carry?

The North 5500 is NIOSH approved under 42 CFR Part 84 as a TC-23C half-face tight-fitting air-purifying respirator. Under OSHA 29 CFR 1910.134 Appendix A, a properly fit-tested 5500 carries an Assigned Protection Factor (APF) of 10 — appropriate for environments where airborne concentrations do not exceed 10× the OEL.

What size North 5500 do I need?

Facial dimensions — not body size or height — determine the correct size. Always start with the Medium (550030M) if you have not been fit tested — it fits the majority of adult workers. If medium fails OSHA fit testing, try Small (550030S) or Large (550030L) accordingly. OSHA 1910.134(f)(2) requires annual fit testing before operational deployment.

What cartridges work with the North 5500?

The 5500 accepts all North bayonet cartridges: 7580P100 (P100), 7581P100L (OV/P100), 7582P100L (AG/P100), 7583P100L (OV/AG/P100), 75852P100L (mercury vapor + P100), and gas-only cartridges N75001L (OV), N75002L (OV/AG), and N75004L (NH₃). See: North Cartridge Guide 2026 →

How do I clean and store the North 5500?

Remove cartridges before cleaning. Wash with mild soap and warm water; rinse thoroughly. For disinfection, use an approved disinfectant and allow to air dry. Inspect the face seal, valve, and head straps before each use — replace the facepiece if the silicone is cracked, permanently deformed, or if the straps have lost elasticity. Store in a clean, sealed bag away from direct sunlight, ozone sources, and chemical vapors when not in use.

Can the North 5500 be used for welding under a helmet?

Unlike the North 7700, the 5500 does not have the low-profile design specifically optimized for under-helmet use. Workers who need a half-mask that fits reliably under an auto-darkening welding helmet or grinding face shield should use the North 770030M (7700 Series) — it was specifically designed for that application. The 5500 is appropriate for general industrial use where over-mask headgear is not required.

How often do cartridges need to be changed on the North 5500?

OSHA 1910.134(d)(3)(iii) requires a written cartridge change schedule established before use — not based on odor detection. For P100 filters (7580P100), replace when breathing resistance increases or upon physical damage. For vapor and combination cartridges, use Honeywell's service life estimation tools based on chemical, concentration, humidity, and shift data. Never rely on smell as a change indicator. See: North Cartridge Guide 2026 →