for welding the P100/2097 filter is standard are these better? I get throat irritation & coldlike symptoms after welding old steel, galvanized fumes

yes they are. but as other say, the best thing is to get some sort of fume extraction going. I built one for less than 100 dollars that pulls 800cfm. if you are getting symptoms use amazon to find the bits you need to make a good cheap system to protect yourself . the growing weed industry means there are lots of functional cheaper fans available and lots of flexible ducting. i got a fan, and 25' of ducting for about 70 bucks, throw in screws, clips ,vent covers and you are done under $100.... got all of it on amazon... (garage welding )

Is there a shelf life to this filter? I intend to buy more and use what's been left.

Im sure there is but I dont know it...it last longer 2 or 3x as long as pink 2097 filters..I was using it in weld shop with weld fumes . Grinding particles. And spray paint fumes..I had very clean breathable air. With hardly any sneezing

how do you know when it's time for a new filter?

I really couldn't tell you, I am still on my first set of these and after absorbing probably 25 hours of welding fumes I can breathe through them almost as good as new. Only difference is they are really brown looking. They still work fine and can't smell any smoke or odors through them. And the fibers inside the center when you take them off the mask is still pure white so nothing is getting through. I looked as I was afraid they had a hole somewhere, I couldn't believe they lasted this long. They are pretty beat up and floppy too and still filter perfectly. Truly marvelous filters!

How many are included? Two filters or two sets of two filters == four total?

1 set, 2 filters total. Bostonbrand is wrong.

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P100 Advanced Respirator Filter 2297, NIOSH Approved, 1 Pair | Oil and Non-Oil Based Particulates, Nuisance Level Organic Vapor Relief, Mining, Shipbuilding, Abatement, Utilities

Product ID: 5411960

Details

Brand
3M
Color
Grey
Filter Class
P100
Number of Items
2
Size
Pack

🔄Twist-on bayonet design for quick filter swaps

⚙️3-layer Advanced Electret Filter for easy breathing

🛡️NIOSH P100 certified 99.97% filtration

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Description

🛡️ Elevate your safety game with 3M’s P100 power filter — breathe smarter, work stronger!

BREATHE EASY WORK HARDER - Advanced Electret Media with 3 filtration layers reduces breathing resistance by 30%, so you stay comfortable all shift long.
VERSATILE INDUSTRIAL SHIELD - Ideal for mining, shipbuilding, abatement, utilities, welding, and hazardous particle exposure up to 50x OSHA limits.
BUILT TO LAST READY TO PERFORM - Durable netting construction extends filter life, cutting replacement frequency and downtime.
SEAMLESS COMPATIBILITY INSTANT FIT - Bayonet twist-on design works effortlessly with multiple 3M respirator series for fast, secure assembly.
UNMATCHED PROTECTION CERTIFIED CONFIDENCE - NIOSH-approved P100 filter blocks 99.97% of oil & non-oil particulates, keeping you safe in the toughest industrial environments.

The 3M P100 Advanced Respirator Filter 2297 is a NIOSH-approved, reusable particulate filter delivering 99.97% efficiency against oil and non-oil based particles. Featuring a 3-layer Advanced Electret Media for easier breathing and rugged netting for durability, it fits multiple 3M half and full facepiece respirators via a quick bayonet twist-on system. Designed for demanding industrial applications like mining, shipbuilding, and welding, it also provides nuisance-level organic vapor relief and protects against contaminants up to 50 times OSHA PEL when properly fitted.

Specifications

ASIN	B009POHH94
Best Sellers Rank	#23,873 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #28 in Respirator Cartridges & Filters
Brand Name	3M
Color	Grey
Customer Reviews	4.8 4.8 out of 5 stars (1,926)
Filter Class	P100
Fit Type	Regular
Global Trade Identification Number	00051131171725, 50051131171720
Import Designation	Made in the USA
Included Components	Filters
Item Package Quantity	1
Item Type Name	3M P100 Advanced Respirator Filter 2297, 1 Pair, Helps Protect Against Oil and Non-Oil Based Particulates, Nuisance Level Organic Vapor Relief, Mining, Shipbuilding, Abatement, Utilities
Manufacturer	3M Industrial Market Center
Material	Carbon Fiber
Material Features	Organic
Number of Items	2
Part Number	051131171720
Product Style	Organic Vapor Relief
Recommended Uses For Product	Mining
Reusability	Reusable
Size	Pack
Special Features	Lightweight, Reusable
Style Number	2297
UPC	051131171725
Unit Count	1 Count

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¥4553

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

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