PAPR Systems

[Dave Fritz]

OK, I get easily confused with numbers and fine details so I wonder if there's a simple, straightforward review of the various PAPR systems comparing them in terms of filtering capability? In leu of that are there a couple of features or categories to look for to compare them? I'm asking specifically about the filtering capability, not style or comfort.

 

[Mark Jundanian]

You might also be interested in the impact resistance (e.g Z87 & Z87+). But as to filtration ratings do a search on NIOSH ratings: n95, n100, p100 and HEPA. That may "clear the air".

 

[Tim Tucker]

Dave I am no expert…. But own 3 PAPRs of different brands. I would refer to the OSHA and ANSI for edification on standards of measure and assigned protrction factors. Clearly, your want to protect your lungs and face, and I commend you for taking this serious enough to research. I wish it more common.

 

[Dave Fritz]

Interesting that the Power Cap doesn't appear to be rated. https://pekesafety.com/products/power-cap-active-impact-visor-replacement-kit?variant=29892926242894
Products that do not list an explicit NIOSH approval on our website do not carry such an approval and should not be used in OSHA regulated environments without the expressed, written approval of a qualified safety manager or local representative of OSHA. All respiratory and safety equipment, regardless of approval, should not be used without prior medical sign-off by a certified physician.

Of course I could have misunderstood. Wouldn't be the first time.

Powercap Active IP Respirator

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[Tim Tucker]

That is why my preferred daily wear is the Sundstrom 500/570 combo, and the Powercap is for occassional guests

 

[Dave Fritz]

That is why my preferred daily wear is the Sundstrom 500/570 combo, and the Powercap is for occassional guests

And why I'll most likely stick with my 3M Airstream. Appreciate your input Tim.

 

[Tim Tucker]

My pleasure! Nothing wrong with the 3M. Because it is the largest in the marketplace - you can usually find deals on parts, cartridges, etc on Ebay. One thing about the Sunstrum. is how cheap the cartridges are. And - it is carried by Woodturner's Wonders.

 

[Bill Boehme]

And why I'll most likely stick with my 3M Airstream. Appreciate your input Tim.

I’m keeping my Airstream. Even though it has been discontinued, I have about ten filters which should last me at least ten years which is pretty longer than I will last. I also have three batteries which is two more than I really need. I also have a spare polycarbonate visor and several face seals. I can fabricate other items. I also have a Versaflo which is super nice although the external turbo unit and hose make it feel like a space suit and I bump into things in the cramped spaces of my ultra tiny shop.

 

[Bill Boehme]

Does anyone know if the prefilter can be fabricated from a similar rated material cut to size? I tend to be very frugal.

Al, what does the prefilter look like? On the Airstream it is a piece of open-cell foam. It can be washed and reused for as long as it stays in one piece, That can probably be found at McMaster-Carr. If it is pleated filter material then it might be wise to not be pinching pennies when it comes to your health.

 

[Al Chavez]

This is it Bill. And it does appear to be open cell foam.

This is an option that i was looking at and it is MERV 16 Filter material in a roll. Not sure if it is a good choice or not. Reviews say it is stiff like card stock paper and I wonder if it will impede the air flow.

I also thought about similar rolls of Carbon Pad Pre Filter Roll for Air Purifiers Furnace Filters Trash Cans and Air Conditioner Filters. This is about 1/16" thick. I don't think it would impede the air flow like the MERC 16 one above might.

The actual 3m prefilters are about $25 for a pack of ten. They are extremely thin open cell like you've described but not as expensive as I originally thought.

 

[Bill Boehme]

The actual 3m prefilters are about $25 for a pack of ten. They are extremely thin open cell like you've described.

$25 for a pack of ten prefilters is cheap considering that it is industrial PPE. I would be very hesitant to make a "better" filter because it might reduce the effectiveness of the main filter because of reduced airflow.

 

[Mark Jundanian]

Al, activated carbon is for removing Volatile Organic Compounds, not particulates. Sure it will filter some big stuff, but that is not what it's for.