Respirators for Mold Remediation

The exposure limits

What the federal rule says

Each entry is condensed from the paragraph cited; the paragraph itself is the rule and the link opens it.

29 CFR 1910.134(d)(1)(iii): The employer shall identify and evaluate the respiratory hazard(s) in the workplace; this evaluation shall include a reasonable estimate of employee exposures to respiratory hazard(s) and an identification of the contaminant's chemical state and physical form. Where the employer cannot identify or reasonably estimate the employee exposure, the employer shall consider the atmosphere to be IDLH.

Source: 29 CFR, Occupational Safety and Health Standards, as published by OSHA (ecfr.gov / osha.gov), read Nov 2–3 2026.

California (Cal/OSHA)

Each entry is condensed from the paragraph cited; the paragraph itself is the rule and the link opens it.

Title 8 §5144(d)(1): Cal/OSHA carries the same hazard-evaluation requirement.

Source: California Code of Regulations, Title 8, as published by Cal/OSHA (dir.ca.gov), read Nov 2–3 2026.

What the makers' data lists for mold spores and remediation dust

The manufacturer's support article on P100 respirators and mold states that a P100 disposable mask is one-time use and that a reusable respirator takes a changeable P100 filter cartridge (North support article 000005312). The filter classes on the chart: N95 95% against non-oil aerosols, P100 99.97% against all particulates.

North cartridges and filters whose chart entry covers it

Source: North Cartridge & Filter Reference Chart; NIOSH approval labels (PIP).

North facepieces

Source: North product sheets (PIP).

North disposable respirators

Source: PIP Rich Product Data, October 2026.

Dräger filters listed for it

Source: Dräger Guide for Selection and Use of Respiratory Filtering Devices, NIOSH (DMC-104642); Dräger X-plore Bayonet Filters NIOSH product information (DMC-109824); Dräger X-plore 8000 product information (DMC-102510).

Dräger masks

Source: Dräger Product Catalog, Industrial Applications (DMC-107423).

Dräger X-plore 8000 PAPR blowers

Source: Dräger X-plore 8000 product information (DMC-102510).

Dräger disposable respirators

Source: Dräger X-plore 1300 NIOSH product information (DMC-109830).

Assigned protection factor

Source: OSHA 29 CFR 1910.134 Table 1 (Assigned Protection Factors). The APF applies only when the respirator is used in a program that meets the standard, including fit testing of tight-fitting facepieces (29 CFR 1910.134(f)) and a cartridge change schedule (29 CFR 1910.134(d)(3)(iii)).

Guides: half mask vs full facepiece · assigned protection factors · cartridge change schedules · P100 vs N95 vs R95 · what OSHA requires for fit testing · cleaning and storing respirators.

Respirators for Mold Remediation questions

Is a P100 respirator reusable for mold? The manufacturer states a P100 disposable mask is one-time use, and a reusable respirator would have a P100 changeable filter cartridge (North support article 000005312).

What is the difference between N95 and P100 for mold? Filter efficiency: N95 at least 95% against non-oil aerosols; P100 at least 99.97% against all particulates (North chart; NIOSH 42 CFR 84 classes).