3MP100 Advanced Respirator Filter 2297, 1 Pair, Helps Protect Against Oil and Non-Oil Based Particulates, Nuisance Level Organic Vapor Relief, Mining, Shipbuilding, Abatement, Utilities

The media could not be loaded. After breathing in a bunch of welding smoke, I decided to try a slim respirator. Obviously real safety gear like 3M takes priority over everything else. After seeing all the creative and knockoff options I decided to try a filter swap on my existing 3M Niosh respirator with the plastic pink filters. These were a perfect fit. I didn't notice any unusual smells. I haven't tested them with hazardous air yet but after decades of experience, plus the perfect experience with the pink, I will blindly trust 3M on this.As for welding helmets, the big chunky pink filter is too big. These soft grey filters are perfect and I even have room to scoot the welding hood closer to my face!You're already reading a 3M filter review. You've already decided to not be an internet tough guy. You're going to make it past 55. This is not expensive, send it for the 3M.

Work great for welding gases

These are great for all the ozone and smoke from steel mill oil being burned off. Obviously not a solve all, but they're better than the fake pink filters that every Chinese factory makes.

I'll take their word that it's filtering what it's supposed to. No issues so far.

Very easy to breathe through!!! The pink 2097 P100's have too much resistance for me, so I've already ordered 3 sets of these 2297 P100's. I have chemical hypersensitivities and I'm working on a PhD in science (toxicology specifically, ironic, I know), so I have to be in buildings and classrooms near laboratories all the time, and I was hoping these would enable me to continue going to campus. Sometimes they don't seem to do anything, sometimes they just delay my onset of symptoms (chest pain + chest tightness), but sometimes these filters do prevent my symptoms entirely - they even enabled me to be in a house with new paint smell without smelling a thing or getting pain. These filters definitely block out odors really well. And the doctors haven't figured out the mechanism of my sensitivities (I seem to react to low molecular weight compounds, whether I can smell them or not), so I can't really fault the filters much. Overall these filters have given me back some of my freedom and I'm happy with them. I definitely recommend these to anyone who has lung issues and need something with low resistance!!

“The filtration efficiency of selected NIOSH-approved particulate N95 and P100 filtering facepiece respirators (FFRs) and filter cartridges was investigated against the viable MS2 virus, a non-pathogenic bacteriophage, aerosolized from a liquid suspension. Tests were performed under two cyclic flow conditions (minute volumes of 85 and 135 L/min) and two constant flow rates (85 and 270 L/min). The mean penetrations of viable MS2 through the N95 and P100 FFRs/cartridges were typically less than 2 and 0.03%, respectively, under all flow conditions. All N95 and P100 FFR and cartridge models assessed in this study, therefore, met or exceeded their respective efficiency ratings of 95 and 99.97% against the viable MS2 test aerosol, even under the very high flow conditions. These NIOSH-approved FFRs and particulate respirators equipped with these cartridges can be anticipated to achieve expected levels of protection (consistent with their assigned protection factor) against airborne viral agents, provided that they are properly selected, fitted, worn, and maintained.”Gardner PD, Eshbaugh JP, Harpest SD, Richardson AW, Hofacre KC. Viable viral efficiency of N95 and P100 respirator filters at constant and cyclic flow. J Occup Environ Hyg. 2013;10(10):564‐572. doi:10.1080/15459624.2013.818228With that being stated, I’m putting my trust in NIOSH P100. Compared to the 2097 and 2297, the 2297 is indeed easier to breathe through.From the beginning of year, when this crisis was rising, I’ve been using my stockpile of 2297, which was primarily used for Fiberglass Sanding, as a means to avoid airborne disease.My first job, I’m a repairman for boats and surfboards, but it’s my second job, Private Medical Transporter, where it’s extremely useful when transporting gurney and wheelchair patients.

I did my homework on this 6 years ago, and my memory isn't perfect but here goes:Purchased for travel to India where the air pollution at ground level is harmful. If taking a rickshaw ride across the city, the grey with minimal pink may draw a little less attention than the pure pink filters.They are for people that have to work a little harder, and have a higher rate of respiration than the 2097's can sustain.As far as welding goes, you need fume removal. It's good to have something extra. The filters with rigid plastic housings do not fit under my welding helmet. These might, but I have a different one that I use for welding - and that isn't very often - only for hobby use.Not sure about today, but a few years ago the 3M site was not usable for information. The description for this product is awful in that it no longer states if it's for a pair of filters, or only a single one. I'll order because I need it for sanding but will be not be happy if a product I purchased in the past as a pair now only arrives as a single filter.