Reddit Reddit reviews First Alert Fire Extinguisher | Tundra Fire Extinguishing Aerosol Spray, Pack of 2, AF400-2

We found 8 Reddit comments about First Alert Fire Extinguisher | Tundra Fire Extinguishing Aerosol Spray, Pack of 2, AF400-2. Here are the top ones, ranked by their Reddit score.

Tools & Home Improvement
Safety & Security
Fire Extinguishers
Fire Safety
First Alert Fire Extinguisher | Tundra Fire Extinguishing Aerosol Spray, Pack of 2, AF400-2
The first alert tundra portable fire extinguisher discharges 4 times longer than a traditional fire extinguisher, providing 32 seconds of firefighting timeLight aerosol can is easy to hold, carry, and use; Ideal for kitchen, garage, boat, RV, dorm, and moreExtinguishes paper, fabric, wood, grease, and electrical firesFormula is biodegradable and nontoxic and wipes clean3 years limited warranty; ETL ratedFirst Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert brand trust survey in February 2018)
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8 Reddit comments about First Alert Fire Extinguisher | Tundra Fire Extinguishing Aerosol Spray, Pack of 2, AF400-2:

u/engine__Ear · 9 pointsr/Damnthatsinteresting

In short: yes! You do so by introducing a chain breaking chemical. Others have mentioned halon as a good example of this. So is Tundra which in a little aerosol can fire extinguisher with a potassium containing chemical that works by the same mechanism: breaking the chemical reaction chain.

If you look up the combustion chemical reaction, it is generally something like CH4 + 2O2 = CO2 + 2H2O (roughly for methane). However, that reaction is just the net sum of what's really happening.

Big clunky CH4 molecules dancing around don't commonly bump into other big O2 molecules. And when they do, it's highly unlikely everything will get rearranged perfectly to make CO2 and H2O. Instead, a bunch of little steps happen in the middle. A chain reaction of steps called a reaction mechanism. We know this by understanding rates of reactions.

Since we understand roughly how reaction rates work, we also know which ones are fast and therefore happen much more often. In combustion, the first ones are called INITIATION REACTIONS where those big clunky molecules break apart (decompose or dissociate by some ignition event like a spark) into smaller, more reactive stuff. An example is O2 = 2O. One oxygen molecule makes two oxygen radicals. That means one molecule moving around hitting things is not two running around hitting things over twice as often.

Now we have some big molecules and radicals dancing around. Something to note is that those molecules we start and end with (CH4, H2O, CO2, H2O) are relatively stable compared to those radicals like H, OH, O, etc. Those radicals are unstable forms of this atoms so they want to bump into other molecules, make or break bonds, and reach something more stable.

So when a big more stable molecule runs into one of those little reactive radicals we make more things happen. An example is O2 + H = OH + O. So we started with one unstable radical and ended up with two unstable radicals running off to react with more molecules. This is called a BRANCHING REACTION and it's how the chain reaction accelerates. There are also PROPAGATION REACTIONS where you start and end with the same number of radicals so you rearranged bonds but generally speaking didn't speed up or slow down he overall chain reaction.

Finally we have TERMINATION REACTIONS where we end up with fewer radicals than we start with. An example would be H + OH + M = H2O + M (ignore that M for now, just means the reaction needs a helper molecule to proceed so it will happen more at higher pressures). We start with two reactive radicals and end with one.

This is where halon or that Tundra stuff come in. They react very fast with radicals that develop early in the reaction, like Halon with H radicals, so you overwhelm the chain reaction with TERMINATION REACTIONS before it can keep going. Kill the chain and you kill the combustion, even with fuel oxidizer and heat there. As long as that radical scavenging chemical remains to keep breaking the chain, the combustion won't proceed.

Google combustion reaction mechanisms to learn more.

Source: firefighter and getting PhD on combustion.

Edit: punctuation

u/MrsRedBull · 8 pointsr/gaming

Accidental fires are how you learn! Thats why you should make sure you pick up some of these bad boys :)

http://www.amazon.com/First-Alert-AF400-2-Extinguisher-Aerosol/dp/B002U0KGDY/ref=sr_1_7?s=hi&ie=UTF8&qid=1343421103&sr=1-7

u/razrielle · 3 pointsr/LifeProTips

This is what I have. I still recommend a 5 or 10 pound extinguisher for your primary one but this works in a pinch.

First Alert Fire Extinguisher | Tundra Fire Extinguishing Aerosol Spray, Pack of 2, AF400-2 https://www.amazon.com/dp/B002U0KGDY/ref=cm_sw_r_cp_api_i_HrC3DbJS0S8R8

u/Droid017 · 2 pointsr/OregonEclipse

These are small enough to carry around in your backpack. I'll have one with me at all times.

u/Tekpc007 · 2 pointsr/3Dprinting

Very good post ! and you broke some very common sense rules. Smoke detector next to the printer is a must with a fire extinguisher close by! I print overnight and remotely with octoprint , have a wifi cam on my printer and a wifi power outlet so i can shutdown remotely . In the process now of rebuilding my cr10s control box to go into a PC case with a safer PC ATX power supply and better mosfets , better wiring . You really do have to check every single part of a new printer and make sure every screw is tight and inspect all parts about every month , its a must ! this is how you find bad wires, heat damage and faulty loose parts. The quality of these printers coming from china is always suspect , they don't have the same rules about safety and quality of electrical parts , especially these cheap power supplies.

these a good to have next to a printer .

https://www.amazon.com/dp/B002U0KGDY/ref=sspa_dk_detail_0?psc=1&pd_rd_i=B002U0KGDY&pd_rd_wg=gjVoO&pd_rd_r=H3NFRFDNXWWC786AGKFA&pd_rd_w=lT4EK

for unattended printing , i have been considering the fire extinguisher ball

https://www.amazon.com/Extinguisher-Suppression-Device-Safety-Product/dp/B01JVXFQ6E/ref=pd_sim_469_1?_encoding=UTF8&pd_rd_i=B01JVXFQ6E&pd_rd_r=HG0JX9DBWW38VCY9K200&pd_rd_w=9YkPE&pd_rd_wg=OpFhs&psc=1&refRID=HG0JX9DBWW38VCY9K200

u/[deleted] · 2 pointsr/AskWomen

Random safety devices to help offset my own paranoia. Like this seatbelt cutter/glass breaker for cars, this rape whistle/personal alarm for jogging and such, this aerosol fire stopper for around the house, and a few other goodies.

u/TwistyTurret · 1 pointr/Whatcouldgowrong

Get some of these aerosols and keep them in your kitchen. They spray with one finger like hairspray. We keep one in the kitchen and one in the laundry room (we have a gas dryer).

First Alert Fire Extinguisher | Tundra Fire Extinguishing Aerosol Spray, Pack of 2, AF400-2 https://www.amazon.com/dp/B002U0KGDY/ref=cm_sw_r_cp_api_i_nEQKDbRAGBEP1

u/KarmaAndLies · 1 pointr/WTF

Two quick questions:

  • In my home country we were always taught to just get any old kitchen towel, damp it, and then throw it over the fire to smother it. Is this advice incorrect? I can totally understand why you wouldn't want to use a real fire blanket, as they're heavy and hard to position, but this wet kitchen towel thing seems unlikely to knock over the oil as the towel wouldn't have enough weight to move it. Worst case scenario it would catch fire itself.
  • What is your opinion on these: http://www.amazon.com/First-Alert-AF400-2-Extinguisher-Aerosol/dp/B002U0KGDY they claim they can handle oil and grease fires?