VvV

@Biff234523 Well, the G2 I have now is basically down to <5 min battery so effectively it needs to be plugged in, no longer mobile. “Outdoors” also includes inside a car, or even a bright room. Lots of reasons why those two drawbacks are dealbreakers, though yes, best portable PM meter atm.

All very valid poinfs for some people, but none really apply to my use case I only use these devices for a quick check when entering into a space for the first time, so battery life never a factor. Why would someone want to use one outdoors? They’re not designed for that anyway. I don’t have any care for history either, I would prefer no connectivity at all, I just want a current reading I’ll take whatever can give a decent PM reading for the cheapest price, with the exception that I’d be willing to pay extra for something smaller to be able to take everywhere

@airgradienthq is releasing a new portable open source air quality monitor in June. CO2, Particulates and TVOC. And built in GPS to track *where* pollution is bad. 199.00 pre-order price - not including shipping and customs which are calculated at checkout, which for me would come out to $248. airgradient.com/portable/ I'm pretty interested in this form factor and feature set, and unlike the AtmoTube Pro 2, this has a built in e-Ink display so you can read the results without needing a cell phone. I've not owned any AirGradient products so I can't yet vouch for them personally, but I've been a fan of the information on their website for a while and I really like the idea of their open source designs. (Image of pre-production model from airgradient dot com)

Plus, better sensors from what I can tell.

@Biff234523 @ghhughes @airgradienthq IMO can’t compare the AirGradient Go and AirFanta G2. G2 battery is measured in min, maybe 1-2 hours. Next ver maybe 12 hours max. The Go is weeks. Then there’s the G2 screen, impossible to see (too dark) except indoors. And the app/data history, Tuya if it works vs open source.

@LapstrakeNYS @Sassafrass_84 Yes, we can only trust the grifters selling unregulated supplements and treatments. They would never lie to us about vaccines or anything else!

@Sassafrass_84 I don't have any advice, Sass. But I support you 100%. We cannot trust our government nor our medical community any more. They both have lied to us. I wish you all the best though. You are very intelligent; You can figure this out.

Wait a darn minute. My sister in law just told me to make sure I take all my mosquito shots before I go to Costa Rica in a few weeks. Um...say what? I am vaccine hesitant after covid vaccines and the mrna bs. Please tell me she was joking because I am definitely not taking anything. I will however take mosquito spray. As in OFF. ADVICE?!

@messele @moreisdifferent This mask is not anywhere near the quality/level of the 3M Aura OP is wearing, and likely doesn’t seal well resulting in fine dust getting inside around the mask. You should probably upgrade your respiratory PPE, if you value breathing.

@moreisdifferent This is the inside of a mask after a bit of light demolition work. Grit particles are millions of times larger than pathogens You do you, I’ll take the piss

At the British Museum for 3 hours. I am the only one masking! This is wild! If you are traveling by yourself, why not mask? You have literally nothing to lose, only random strangers will judge you. The heath benefits of masking are enormous relative to cost. #COVIDisAirborne

@DankoffIvan @moreisdifferent Yes! You should use your intelligently designed nasopharynx in West Africa to help treat Ebola patients sans mask! That’ll show em you’re not a penis.

@moreisdifferent I'll stick with my god given/ intelligently designed / evolved nasopharynx to keep me safe thanks. It works better than anything by 3M and you have the benefit of not looking like a prize penis.

@comancheriaNor @N95Anaesthetist Where is the power to trip on?

@vlotty @N95Anaesthetist It's NOT PREVENTION its PSYCHO BULLSHIT THAT YALL MAKE UP AND THEN POWER TRIP ON that doesnt actually do anything beneficial And people are done with it

Ebola is airborne. Secretions aerosolise. Droplet dogma in medicine is harming and killing people.

@LinsanityStrong @TannisBell1 How does promoting N95s minimize handwashing?

@vlotty @TannisBell1 N95s wouldn’t kill more people, but minimizing handwashing would

@SpinosaPrunus Really sorry to hear that. If you haven’t been able to fit test, Covid Safe Cologne has done fit testing in the past, and might be able to help or direct to someone that can!

After my #longCovidkid had gotten a bit better, she tried going to school for one lesson. Loved it. Of course she wore a mask, but still caught COVID again. Mostly bedridden for 4 weeks again 😢

MIT found Alzheimer's-like amyloid plaques in the brains of people who died of COVID. buff.ly/ikYRPuI Spike proteins were clustering with amyloid. This was not in older adults with pre-existing disease. It was caused by COVID.

@goingtogetugly @BirdieBittern Exactly! Buildings don’t exist. Prove that they have been isolated!! You can’t!

@BirdieBittern "54 Viruses Found In Building Dust" That is an outright lie.

54 Viruses Found In Building Dust: It Could Change How We Track Outbreaks Researchers at Ohio State found that vacuumed indoor dust can reveal 54 different viruses at once, including flu, SARS-CoV-2, and norovirus, across schools, dorms, and offices. studyfinds.com/viruses-in-bui…

@BenjaminvN1997 @1goodtern lol, we’ve seen this movie before. You’d rather wait until that grows even more exponentially? And then you really have to worry? What’s the problem with stopping it here and now?

@1goodtern To be precise, 0.00051% of the population of the Democratic Republic of the Congo is infected (based on the 600 suspected cases out of 116.5 million people). Stop spreading fear propaganda!!

Wow. This graph puts the speed of this outbreak into context. It's not an illusion. This is *very fast*. 👀 x.com/i/status/20569…

@jhammond1993 @N95Anaesthetist Pandemics are “created” when people don’t use the precautionary principle. Ie calm-mongering. Like what happened at the beginning of SARS-CoV-2. They even changed the name to make it sound friendlier even as it was spreading out of control.

@N95Anaesthetist Stop trying to "create" another pandemic... its laughable you are a medical professional.

@LinsanityStrong @TannisBell1 How would using higher level PPE (eg N95s) kill more people? Precautionary principle.

@TannisBell1 @N95Anaesthetist Mayo Clinic’s position is that Ebola is never airborne. Ebola can be airborne, BUT surface/droplet spread takes precedence, and people who are promoting airborne spread could be promoting ineffective procedures that kill more people. Gloves work better. mayoclinic.org/diseases-condi…

@comancheriaNor @N95Anaesthetist Providing info to make it EASIER to CONTAIN a virus is the OPPOSITE of what you’re afraid of. So there is no need to panic, and if prevention makes you feel that, something to discuss with a professional.

@N95Anaesthetist Stop trying to induce panic and fear among people. We know yall are addicted to despair and fear, but 6 years is enough. Give it up.

@leanhealth @Engineer_Wong @Themislv_vls Along with the comment from Nathalie, what you describe isn’t how air purifiers are intended to be used— they don’t provide a clean bubble, they need to clean the air in a room as fast as possible over time. 5% unfiltered in one pass doesn’t matter.

@Engineer_Wong @Themislv_vls This is only true if the 5% unfiltered in first pass (that will be actively & wideley distributed due to the strong created airflow) are insufficient to create an infection Otherwise you trade more infections with ⬇️ initial virus load against less infections with ⬆️ load

Recently, I've received several emails requesting H13 or even higher-grade filters. I would still like to explain here why H13 and higher-grade filters are not a good choice for air purifiers. A good air purifier's primary goal is to clean the air in a room as quickly as possible. There is a specific metric to describe this: CADR (Clean Air Delivery Rate). The higher the CADR, the faster the purifier captures airborne particles on the filter. Achieving a high CADR requires two conditions: High filtration efficiency – the filter should capture a high percentage of particles that pass through it. Large airflow volume – a large amount of air should flow through the filter per unit of time. If the airflow is large but the filtration efficiency is low, only a few particles are captured each pass. Conversely, if the efficiency is high but the airflow is small, the total number of captured particles is also low. But these two factors contradict each other. With the same fan, using a higher-grade filter improves efficiency, but it also increases resistance, which reduces the airflow. So a higher-grade filter is not always better. Filters like H13 or H14 commonly found on the market have very high resistance, significantly reducing airflow and thereby lowering CADR — meaning slower purification. After extensive testing, I found that the E11 filter offers the best balance. With about 95% filtration efficiency, its airflow loss is minimal, resulting in the highest overall CADR and thus the fastest cleaning speed.

@mosesmasks DM’d if interested in testing it on QNFT

@vlotty @RndmStreetMedic They mention the leaking, that is something I've been concerned after the last time I used it, so this is good information to know, thank you. My dream is to have a 3M PAPR or a CleanSpace HALO

ty for posting cause I forgot what my pfp looked like

@open_erv Are you selling the extra quiet high CADR fan yet?

The air purifier workshop yesterday was a great success. We build two machines that have a higher performance to cost ratio than anything you can buy, by a factor of a couple, with an excellent CADR to noise ratio. The one with the cheapie fans was $79 CAD and the one with the P14 fans was $92 IIRC. The airflow multiplied by 0.85 was about 215 CFM, for both. This is slightly lower than the 250 of the first one made last Tuesday (which was approx 41.5 dBa at full power), I have some hypothesis for why, including the measurement error but that's not a big deal right now. Based on CADR and noise and price, the cheapie fans are actually I think a bit better. We tested the machines to show they work, with a highly sensitive particle detector, an anemometer and a fog generator. One workshop participant bought one machine at the cost of parts. Someone wanted the other one but thought someone else wanted it and things got confused and I ended up with it, I'll find a home for it another time, or I might actually just cut the tape and dismantle it so we can build it again next time which is a bit of a shame but they are pretty easy to build. I again found that people were not actually very receptive to the disease suppression side of things, even with the recent Hantavirus business. They were more concerned with PM pollution of various kinds, and the effects. This disappoints me of course as I think this is the doozy. I hope to hold the event again in maybe 2 months, and every 2 months or so, making it a bit better each time. It was a nice day, we had tremendous airflow, just like being outside, a strong breeze through the room, enough to slam the door shut so hard I thought it might break the glass. I guess we could have measured it with the anemometer, but it varies greatly over time of course. Two or three of us masked anyway. We also had a ~750 CFM CADR Extra-quiet CR box in operation. AltDocs also came to the larger event and conducted pluslife testing on anyone who wanted it, including me before the workshop. AltDocs also had a great table in the main area where he taught about masking, testing, sip valves etc., did fit testing with the Portacount the three of us bought, and showed CO2 and particle meters and all kinds of great stuff. I asked if we could take a group photo but the answer was no, so that was that, that is why there are no pics of the participants, we do not want to support mass surveillance.

@NukitToBeSure Thoughts on an “air curtain” and purifiers inside the curtain? Essentially splitting the room in half, and purifying one half of it?

Unfortunately, "protective bubbles" are almost entirely a marketing myth. Where you place an air purifier in a room in relation to yourself has almost no effect on how much protection it grants you. Air is a fluid, and fluids mix constantly with the slightest movement. It's like trying to make a "cream only" bubble in your coffee while you're stirring. Only in a room, people are the spoon. This is easy to verify with even a cheap particle counter. Take a measurement with an air purifier across the room, take a measurement with it next to you- it will be almost identical. The measurement will remain almost identical until you are a few centimeters from the air purifier's output. People feel a breeze from a purifier blowing on their face, so they think they are protected, but with the exception of some very specialized units like the Air Fanta Wear, there is almost no localized effect- it's all CADR per room, not CADR per cm away from you. Here's a CFD model with an air purifier in various locations and the relation to particle count in the breathing box (inhalation zone) of a room occupant. In short, it doesn't matter if you have a lot of CADR close to the performer, just how many CADR in the room. Big air purifiers on stage are mostly for feels and vibes. The data just does not support it. It's too much air, mixing too quickly for a localized effect. A particle counter near the performer and in the audience will show almost the same number.

@mosesmasks @RndmStreetMedic For reference, these don’t seem to perform very well: reddit.com/r/Masks4All/co…

@RndmStreetMedic This is what I got, the BROAD AirPro PAPR It takes a long time to charge though so sometimes I'll have it plugged into a power bank while I'm using it cause you can only charge the battery while it's inside the device