#air filter

[urban-paradise]

Stoked to have the 3.0 finally!

#plant #plants #algae #green algae #spirulina #Algenair #solarpunk #air filter #cool tech #science

[thoughtportal]

Public Health Emergency ends.

Ventilation in Buildings

https://www.cdc.gov/coronavirus/2019-ncov/community/ventilation.html

#tiktok #COVID-19 #CDC #the pandemic #public health emergency #public health #ventilation #air filter #MERV-13 #uv air filter #safe working conditions

[laurellynnleake]

Just swapped out the filters on our 1st Corsi-Rosenthal cube, and what a difference! Dusty old filter above, minty fresh one below.

This particular filter box spent 10+ months on low inside our house, catching tons of wildfire smoke, PM2.5, and COVID-19 aerosols, as well as pollen, dust, and mold. Glad all that's on THERE and not in our lungs!

I highly recommend building your own CR box for your home, school, work, mutual aid meet ups, etc. All you need is 4 MERV-13 filters (sold at most hardware stores), a 20" box fan, scissors, cardboard, and duct tape.

It ends up costing about $75-100 - much cheaper and performs a lot better than a lot of fancy air purifiers. Building it with 2 people takes about an hour (mostly to measure and cut out the weird shroud thing), and swapping in new filters is much faster.

Check out the Clean Air Crew website to get started on your own! We protect each other! 💪😷✨

#corsi rosenthal box #cr box #clean air crew #DIY filter box #solarpunk #covid is airborne #diy projects #clean air #covid conscious #me #l3 host post #air filter #ventilation #Corsi-Rosenthal cube

[flock-talk]

Mad that I had to spend 300$ on a filter but hey my paranoid ass can check the air quality from my phone now so there’s that

#air filter #air purifier

[turtlesandfrogs]

Just in case someone is waking up today and realizing the air quality is bad and they should do something about it (you think I'm kidding, but there's just now people realizing how bad it is), here are some cheap diy air filters:

1) tape a filter to the back of a box fan, making sure the air can't sneak in around the edges:

2) go whole hog:

If you don't know what I'm talking about, yesterday Seattle had the worst air quality in the world due to wildfire smoke. Usually we have really good air. It has taken some people by surprise.

Here's today's air quality for the region:

Local mutual aid groups are sharing resources, so if you can't afford a box fan or filter, plug in to them and see if you can get some help.

#wildfire smoke #air quality #air filter #pnw

[fabricdragondesigns]

so not only can it cut transmission of illness, it is GENERALLY beneficial

#air pollution #air filter #covid #education #science

[sportsandlaughs]

#oil #oil change #air filter

[comfortspringstation]

How to Have a Nice Smelling Living Room Naturally

#odor #eliminate odor #smells #remove smells #add scent #add fragrance #refreshair #clean air #air cleaner #air filter #herbs #potpourri #spices #fruit

[affixjoy]

I am continuing to feel insane about life in a pandemic with a toddler. It’s hard and it sucks, and this winter has been particularly brutal for all of it.

I try to be very gentle when talking to my irl people about covid stuff, because they already think I’m overreacting to everything. So a lot of it is just casual mentions of things I do, bringing them masks, linking articles in the family chat…

It usually gets ignored but I figure I have to try, and maybe it will pay off one day.

Well today might be one of those payoff days. I think I finally convinced my pregnant sister to get a hepa filter for her classroom which will hopefully reduce risk to her, her unborn baby, and all her students. She’s already had it three times, once during this pregnancy, and I’m terrified for her and my future niece/nephew. Here’s hoping she follows through 🤞🤞

#covid isn't over #covid 19 #air filter #if only the cdc was doing their job #then I would seem less like a conspiracy theorist #tumblr is apparently for Star Trek and my unedited pandemic thoughts

[blowery]

For those of us in the path of the smoke from the fires in Canada, a homemade CR box does a great job cleaning the air. Just make sure you get Filtrete 1900 filters that can handle and filter smoke and soot.

#diy #canada fires #smoke #air filter

[teabree-shark]

sharkpup scan

#musings #3d scan #trans rights #sharkpup #air filter #polycam

[productstoreview]

#smoke air cleaner #air cleaner #air purifier #air filter #smoke cleaner #smoke cleansing

[mycochaos-oldacnt-plzfollownew]

MycoChaotiX Q&A

Q: “can you explain how you mist once you see your first pins? thanks!” A:  Greetings mycopal!Allow me to provide you with some additional information to fully address your question :) Pinning is a process that occurs throughout the entire colonized cake, where the mycelium's metabolic processes shift towards fruiting. This is why, if someone's cake develops significant side pins, you often only see pinning there, rather than flat-surface pins through the fruiting phase. It's important to ensure that the colonizing mycelium is not exposed to the same lighting conditions as during fruiting. I personally keep black tarp material on my shelves to prevent light from hitting the bottom of the clear totes. However, light serves as a secondary trigger for pinning, while increased fresh air exchange (FAE), a drop in temperature, and the presence of condensation droplets on the mycelial mat (which later dry up) are the primary triggers for pinning after colonization is complete. In my current setup using unmodified and modified 6qt shoebox tubs, I don't need to mist much. During colonization, I don't mist at all. The lid on the 6qt tubs, combined with the substrate's field capacity, provides enough moisture. You should notice notable condensation on all walls of the tubs throughout the entire process. The shoeboxes have built-in gaps in the lid-lock structure that allow for some passive FAE. These tubs were originally designed to allow air circulation for storing shoes (particularly for shoe collectors), but the passive FAE is sufficient to let excessive carbon dioxide escape while maintaining humidity around 90%. When I observe full colonization of the subsurface sides of the tub and at least 80% of the tub surface covered in surface mycelium, I transition to the fruiting stage. My process has become quite straightforward: I remove the lid from the colonized tub and place a new shoebox tub (which may or may not be modified) upside down on top of it. Before placing the new tub, I mist it lightly. Then, I move the tub to a lower shelf in my grow and research area. The top level shelves are not exposed to my grow lights and are slightly shaded; and has a slightly lower ambient temperature. I also have a timed HEPA filter running on the lowest setting, cycling on and off every 6 hours. Additionally, I use brand: mostthink LED plant lights on the fruiting shelves. This tub setup allows light to spread evenly over the substrate surface, through the new-tub into the colonized tub more effectively compared to fruiting with the lid on. If you choose to fruit with the lid on, you need to be mindful of the direction from which the light enters as the fruits can grow sideways. At this point, I still haven't misted the colonized substrate or the inner walls of the tub. The lips of the two shoebox tubs should align, but there can be a slight offset, which helps with passive FAE and allows intentional air-filtered flow for exchanging fresh air and removing carbon dioxide. After a few days, I usually start to observe budding primordia as the increased FAE and air exchange in the tub cause the condensation on the mycelial mat to dry up. Once you see primordia, it becomes easy to spot their development from that point onwards. At this stage, I closely monitor the humidity in the tub. If I notice a lack of present and collecting condensation droplets on the inner walls of both the colonized and "roof" tub, I may use a light misting hand-pump spray bottle. I personally use a 250mL hair stylist mister bottle with filtered (or boiled and cooled) water, to which I add 1 tsp of H202. However, I never spray the mycelium or the fruits directly. I MAY do a misted spray upwards, away from the colonized tub, and let it slowly sway and sink onto the substrate (but only if I havent begun to see primordia forming in that few day window I discussed above). I do this, primarily because of my belief/understanding that pins form on parts of the mycelial matte (generally rhizoid growth that have laid flat) and do so in spots where there was condensation pooled that dries from the FAE increasing :) Does this help? Follow up questions? :)Thanks for reading!

#myco #mycology #mycochaotix #mushroom #fungi #misting #pins #primorida #mycopal #mycelium #mycelia #spore #spores #air filter #mostthink #fae

[flock-talk]

Naturally Newts air filter just decided to stop working today, yknow when he’s been having sneezing problems that’s exactly the perfect timing to stop working.

The one good thing is that the replacement was $125 off, it was still $300 but hey. I would have needed to get a new one for the size of the new bird room anyways.

#that’s $300 I did not have to spend on this right now #everything always has to go wrong at once #always #air filter #air purifier

[homebestchoice]

TOP 10 Best Air Filters For Allergies - Reviews & Rankings

Allergies and respiratory illnesses are common in many people. They are wondering how to make this situation better. This is their main concern. So we have gathered the list of the best air filters for allergies for you.

#best for home #air purifiers #air filter #homebestchoice #allergies

[pandemic-info]

Efficiency vs. Effectiveness - They are Not the Same Over the past 3+ years there has been a sharp rise in interest related to indoor air cleaners. I have consistently seen confusion over the terms efficiency and effectiveness. This thread is about the difference. 1/

Richard Corsi, PhD, PE (Texas) on Twitter

A helpful & clear explanation! Some excerpts:

As an example, consider an air cleaner that removes close to 100% of particles that enters it, but that only has 1 cubic feet per minute (cfm) of air passing through it.    4/ 

In this example, the air cleaner has a Clean Air Delivery Rate (CADR) of only 1 cfm.  In a typical K-12 classroom (say, 700 square feet with 9 ft ceiling height) this would yield an equivalent of only about 0.01 additional air changes per hour.    6/ 

So, 100% “efficient” may do very little to clean the air if the air flow rate through the device is small.  This was the case for many quiet and non-filter-based air cleaners that were marketed in the 1990s and 2000s.     7/ 

On the other hand, it is possible to have a particle removal efficiency of, say, only 50%, e.g., only half of the particles (or particle mass) that enter the device are actually captured by the device, but to have that air cleaner be quite effective.  What?   9/ 

Imagine a device that is only 50% effective at removing aerosol particles from indoor air (fraction removal efficiency = 0.5).  Now, if the air flow rate though that device is 800 cfm it will have a CADR = 400 cfm (800 x 0.5).    10/

This is greater than most off-the-shelf HEPA air cleaners on the market and far greater than many other air cleaners.  In this case, for the classroom described above the air cleaner would yield an equivalent of about 3.8 additional air changes per hour.       11/ 

This is why the Clean Air Delivery Rate (CADR) is a much better metric than filter removal efficiency when comparing air cleaners.     12/ 

#air filter #filtration #ventilation #HEPA filter #HEPA #richard corsi #CADR