ML00997 - Miller LPR-100 OV Half Mask Respirator P100 Filters (M/L)

Technical Overview of the Miller LPR-100 OV Respirator

The Miller LPR-100 OV Half Mask Respirator (SKU: ML00997) is a high-performance personal protective device engineered specifically for industrial environments involving welding, metalworking, and paint weldment cleaning. This Medium/Large unit is designed to provide respiratory protection against airborne particulates, oil aerosols, and specific organic vapors. The respirator utilizes P100 filter cartridges, which deliver a filtration efficiency of 99.97%, effectively capturing hazardous contaminants such as hexavalent chromium, stainless steel fumes, galvanized steel residue, manganese alloys, aluminum dust, cadmium, and lead fumes.

A defining technical characteristic of the ML00997 is its integrated Organic Vapor (OV) relief. The P100 filters feature an added layer of activated carbon with a specialized pore structure designed for maximum absorption efficiency. This allows the respirator to mitigate nuisance-level organic vapor odors that exist below OSHA Permissible Exposure Limits (PEL), making it suitable for environments where both particulate and vapor hazards are present. The filters are encased in a wrap-around spark guard, protecting the media from sparks and debris common in welding operations.

Ergonomically, the LPR-100 OV is constructed to minimize physiological strain on the user. It features an extreme low-profile design that accommodates the spatial constraints of welding helmets, including the Miller T94™ and Elite™ series. This ensures that the user's field of vision remains unobstructed and that the respirator does not interfere with other protective eyewear. The mask body is manufactured from medical-grade materials that are odor-free, non-allergenic, latex-free, and silicone-free, ensuring biocompatibility. A large non-return exhaust valve is centrally located to facilitate the rapid expulsion of exhaled air, thereby reducing heat buildup, moisture accumulation, and breathing resistance. The four-point head strap system allows for precise tension adjustments, ensuring a secure seal and an Assigned Protection Factor (APF) of 10.