EG Air Quality Monitor, Formaldehyde Detector, Pollution Meter, Sensor, Tester; Detect & Test Indoor Pollution, TVOC Volatile Organic Compound Gas, PM2.5 2.5 Micron Particulate Matter Dust; eBook

OK so this device is fantabulous!! OK you MUST calibrate it correctly!! Follow the directions for the first callibration ever - I think that might be 20 minutes outside. Don't ever callibrate it inside. So each time, I set it outside in the clean air and let it do it's countdown in the fresh air. Now, I take it where I want to go and set it in the room for about five minutes. It has helped us SO MANY TIMES! We bought furniture from "The Cannery." It came with quite a smell. I am sensitive to some odors, what was the smell? Was it Mahogany or was it something else? This device told me that the odor was NO PROBLEM at all, so the smell was probably fresh mahogany!! Next, we were kitchen cabinet shopping. Didnt want to spend an arm and a leg. Went to to Kitchen Cabinet store in which the prices are AMAZING. They only sell like five colors of cabinets. The cabinets really looked amazing, even saw that the boxes were made of plywood. The cabinets were shipped in, and then the company would put them together - or you could yourself. We were very close to making an order but before hand, I just had to wonder... Why were they priced so well? I sat out in my car with my device callibrating up through my sunroof on the top of my car in the fresh air. It was time to go in the store... Hiding my device, I went into the store... Only moments later heading over to the cabinet section - "BEEP BEEP BEEP!!!" My device was sounding! Quick, I stuck it in the drawer of the cabinets - it was in the RED!! A little longer and I set it in another cabinet (it doesn't keep beeping) TALK ABOUT TVOC'S!! The formaldahyde was also elevated. OKAY SO YEAH. So just the AIR in that warehouse had elevated TVOC's and formaldahyde, I was concerned for the safety of the workers. They were mostly young and most likely naive to what they were breathing. I did a little research and after speaking with someone knowledgeable on the levels, I learned that the levels in the air shouldn't harm the workers, and that if I bought the cabinets, I'd probably need to air them out or run a fan on them - sound like for weeks or months to help bring those levels down. We've used this multiple times, and let a friend use it... It's fascinating, a great tool to help steer you in what you want to buy. DON'T BE ALARMED and freaked out - understand it's not PPM's - it's a different measurement. Be careful not to freak out and become a "Karen" when something reaches a high number, orange or red color and starts beeping. But, know it's helpful for you to help you make healthier buying deciscions.

Upon my initial observation of the box that this device was shipped in, I was kind of amazed at the quality of the packing and the device itself. I've been using this device for the past couple of days and am fairly impressed with the accuracy and sensitivity of the device. An absolute must for anyone with allergies, or if the household is getting sick for no apparent reason. I highly recommend you follow the directions, especially during the initial unpacking of the device. As recommended, you should leave the device outside in open air for at least 30-60 minutes before turning it on to allow all sensors to vent. Some sensors contain heating elements within it thats necessary for it to function. For best results, let everything air out before applying power. Once I got the device working, I was utilizing it to measure various areas. I took it to work to measure the air quality in one of the datacenter labs and had HCHO of 0.000, TVOC of 0.001, and PM2.5 of 000. The device pretty much provides real time stats because as I was working in the lab, every time I walked by the device, the readings changed very slightly (i.e. TVOC 0.001 increased to 0.005, PM2.5 went from 000 to 002, etc). Numbers all went back to zero after a few moments. This device is so sensitive, as I walked around my home, the measurements showed up in real time. When I walked into the hallway, readings dropped fairly low. Reason is we have a HEPA air filter in the hallway situated near the cat litter. This device is so sensitive, it can tell a difference when I drive down I-280 and I-101 with my windows down. Where I live, I-280 is a freeway completely surrounded by trees, whereas I-101 is mostly industrial. Readings are much lower when driving along I-280. See? Trees are very beneficial to help keeping our air clean! This device is so sensitive, it kinda makes going #2 fun. Because fecal matter releases VOCs due to the sulfurs, and many other chemicals used in your body for digestion, it will register a higher TVOC value on the device. Stinker the poop, higher the TVOC value! You or someone smokes? While smoking, run this device and see how detrimental smoking does to your air quality. Second hand smoke is no joke! Live in California like me? Take this device (rechargeable battery and portable, so convenient!) with you when you go outside to check your air quality due to the many wildfires going on in the state. Although this device will tell you your Air Quality Index (or AQI), it won't be able to do anything more than tell you. Very helpful to allow you to take extra measures to protect yourself (especially if you have asthma, such as myself). Because this device measures the separate AQI values in real time, use this device to check the effectiveness of your air purifier! Bought a new car? Take a reading with this device in your new car's interior. That new car smell, believe it or not, is the emissions of formaldehyde caused by glues and resins curing. Bought new furniture? Use this device to check the HCHO levels that new furniture has the potential of giving off. Most furniture is made of MDF, or particle board. Particle boards are bits of wood bonded by chemicals and glues that emit formaldehyde. What I thought could have made this product cooler: * Ability to save histograms when measurements is started. You have to be on the graphs page and leave it there to get historical graphs. If you leave the page and go back to it, you won't be able to view past measurements. * Ability for the device to save calibration data across power cycles. When you calibrate the device and zero it out, next time you power cycle the device the readings may be a bit different. * Ability to export results over time * Ability to change the user interface color schema This product is perfect for taking spot measurements to get a good idea of present environmental conditions. You won't be able to see past readings. I highly recommend getting this product!

** Update 12/8 ** I've updated from 2 stars to 4 I had to post an update because of the amazing customer service.. it wasn't immediate but it was efficient. I honestly didn't expect much at all and was planning on returning my device. I did not and here's why.. I purchased during the CA wildfires so I could not calibrate the device and it was inaccurate. So, if you are buying during bad air quality outdoors it will not be accurate, though will still show you if things get better or worse until you can. Once I calibrated to the "fresh" outdoors a couple weeks later when our "hazardous" (worst in the world) air became "fresh" I could spend more time working on calibrations.. it took several attempts and did this over several days (2 weeks) in an effort for consistency. I did have to adjust manually but the online eBook was helpful through the process. I'm not sure I totally believe all of the HCHO are totally accurate as I know some essential oils that actually aid in respiratory health and if nearby will set the monitor off, then dissipate over 10-30 min and the machine is happy again. So, some things heavier than air will register.. know what is nearby and make your own conclusion as to your safety of the air. The PM2.5 which is huge for CA wildfires and to me, with a respiratory medical disability is most important. It is quite accurate though once you finally calibrate. Because of the time it took me to calibrate and believe the unit, I didn't want to return the unit. What I found out was that it's difficult to find machines that will show US guidelines so you will get a green, yellow, or red face on your machine. Just know, it is still green when it should be yellow/orange in US guidelines. I was willing to keep the unit for a discount for all of these difficulties and the company came through and compensated me more for my troubles. I've upped my rating from 2 to 4. My reason for not a full 5 is because of the time to actually get things working as they should and the fact I basically have the US standards memorized, I can't always count on the happy green smile to be good for my own health. The readings however, are pretty much dead on now (outside) with EPA reports. I do believe your results will be accurate, however you may need to decipher them to US standards or your own personal sensitivities. The company is very receptive to questions and offering a response. --------------------------------------------------- ORIGINAL POST I purchased this during the CA wildfires when the air quality was in the "Purple/Hazardous" zone on the US charts (see my last photo for US PM2.5 values). Our air quality PM2.5 was over 300 ug/m3 but this tester showed a yellow "poor" face. Since you can't calibrate it indoors, I had to wait 12 days to get a good air quality day. I've recalibrated the machine at least 5 times. The time apparently resets each time you do this too so the time is always back in 2015. I give the unit 2 stars because after calibrating is is moderately accurate. Not enough to use to measure actual air quality standards, but it will fluctuate when put near harmful products enough to know there are VOCs around. The fact it tests for formaldehyde is cool too, but I'm not sure about the accuracy as it jumps from green to poor and back for no apparent reason. Photos in order: The first photo is show what my unit looks like purchased at $109. I clicked in the link to review earlier today and this model ( https://www.amazon.com/dp/B074FTVHFN/ref=dp_prsubs_1) showed up with all the same reviews and comments as the model I have. Hmm As I review this afternoon, the image again shows my model purchased. Just be aware what you are purchasing. Second photo is after all of my calibrations on another day the PM2.5 was reported by the EPA here as 57 which is unhealthy. The unit read 54, not too bad. The PM10 was off considerably. The biggest issue I have is that after reading the manual, I finally realized why the unit kept saying "normal" when it was "unhealthy" by US standards. The unit goes off the China air quality chart (see photo 4 from manual). Photos 3 and 4 show air quality taken at the same time as the monitor indicated in photo 2. For this reason, the unit is not useful to me as someone with respiratory issues that needs the US air quality results. See last photo 6 for US standards chart and compare to what you will actually see with the unit on photo 5 China standards chart. It's just too far off for me and I'm not going to figure it out on my own, though one could. I contacted the seller 3 days ago as their email said to do that before posting a negative review but have heard nothing back. My request was asking how to change the unit to US standards if it's possible at all. If that can't be done, I will be returning it. I'm hoping this review will prompt a response, otherwise the unit is going back.

I liked having this little meter tell me about my internal air quality and then being able to take it outside to determine if the air quality outside was better. Some days with fires, when it didn't smell like fires it was useful to know the 2.5 PPM counts. It also let me figure out if closing up my house and running my filters if I was making a difference - big difference as we could get and keep our 2.5 PPM's down below 20 when the outside was up above 80 or 90. It showed me that my filter choice for my HVAC MERV values when high wasn't really doing anything more to help than lower value MERV. All that was great . . . unit only lasted 6 months though and now I have something which won't take a charge and is useless. I was hoping this would last a few years. Any help from the seller on this. What's the warranty? Update 10/2 - I reached out to Amazon and asked to have to be in touch the vendor. Amazon said they would but haven't seen anything and it been 4 or 5 days. If the vendor wants to resolve this - please reply with your contact email/phone in your comments.

I have a bunch of air quality monitoring devices from a variety of manufacturers and extensive air filtration in my home. I have pretty acute asthma and I know that my environment aggravates it. Because all my devices have different readings for the same air and they monitor different contaminants, I wanted a device that monitored as many things as possible and was accurate. I can't speak to the accuracy of this device because I have no way to calibrate it with an objective, calibrated source. However it does monitor things that my other devices do not, and when they're reporting low or no contaminants, this device does report that there are measurable levels of particularly volatiles and hydrocarbons (everyone else seems to agree about pm1/2.5/10). So I have learned some data I didn't have before I had this device. But there are definitely some issues. The battery is laughably inadequate. It doesn't even last a day unplugged (micro USB, which is a pain). So you have to leave it plugged in, which causes the device to heat up. This causes two additional problems. First, when it gets hot, it has a fan that turns on. Obviously this changes the reading on the device because it works by sampling air across a sensor. The device is obviously less accurate when the fan is running, which is hard to avoid. The fan itself is noisy but not too bad. Between the fan noise and the reduced/nearly useless accuracy when it's hot, I find that it's not actually useful to leave it on all the time and it makes much more sense to use it when you need it, rather than use it for continuous monitoring, which is what I wanted this for. It has zero integration with IoT/smart devices, so you can't poll it or set up ifttt to work with it. And of course you can't store data from it. So while it's a very useful meter, the fact that you can't log data makes it much less useful. The interface is absolutely terrible. If you're just using it for quick measurements and verification of your environment, it's not that big a deal, but even setting the date and time is a chore. And this brings up the next point. There's no remote, no app interface, and the on device interface is awful -- but also it has an alarm which is incessant when it is alerting (and when it gets hot the TVOC meter gets pegged so it's beeping continuously). It's either impossible or very difficult to configure the alerting (which will also alert when it thinks it's too cold or too hot). You can turn off the buzzer entirely but the selection for this ("buzzer closed") is unintuitive and not very useful. Even if you could leave it running continuously without it overheating, there's no way to mount it on the wall, and there's no way to leave the display on continuously. So you can't monitor it with an app, you can't run it continuously, you can't use the display continuously, and the options for alerting seem to be "alert all the time or don't alert at all." Ultimately I don't think I can use this device at all, which is a bummer because it has potential and seems like it could be useful. Questionable design choices however mean that this thing is just sitting unplugged and useless on a shelf. That said I did successfully use this device to learn about irritants in the air I was unaware of. I just need to find a different device to monitor those specific things so I can begin to address what they are and what causes them. Pretty disappointed for something that cost this much.

My 6 yo daughter keeps waking up around the same early morning time with a very bad cough. Discussion between my wife and I thought it to be an eviromemtal issue since it kicked up soon after we started using our central outside natural gas heat. She already sleeps with a humidifier to help keep moisture in the air. We thought possibly a gas or exhaust coming through the vent. I searched online for a reasonable user friendly Air Quality Monitor and found this one. I'm no expert but it seemed easy enough to operate and set up. Although the enclosed user manual is a wee bit short on details, enough is there to get you up and running. Fully charged, calibrated and ready to see what could be causing my daughter to nightly wake up at 3 a.m. coughing. After allowing it to run all night I immediately checked it the following morning. It showed absolutely nothing but green and clean fresh air. No contaminates other than some point 003 dust. I knew I must have done something wrong so I called HVAC/Air Quality professional in. He came and checked the house out top and bottom. He found nothing also. I showed him my Air Quality Monitor I had used and he was glad to inform me that I had a good one to use and he said after looking at the logs that it was spot on with his findings. We are still searching for the cause of the cough but we know thanks to my purchase of this Air Quality Monitor from EG EVERHOLD LLC that our air is clean and that I have a nice tool to use to help keep it that way! No issues, No complaints and if I did have any I'm sure customer service would help immediately. A plus is that you can check the air quality anywhere also. Use with the enclose ac charger or with the self contained battery, either way I'm glad I bought one!

I purchased this product to test the air quality of the manufacturing shop I work in. OSHA was on site recently and during my conversation with the OSHA inspector it came to my attention that my company had not disclosed to OSHA that we weld Chrome Rod. I also learned during this discussion with OSHA that welding Chrome Rod is toxic and a known carcinogen. We all knew that the air was incredibly unhealthy as it regularly looks like a rock concert with fog machines in the shop, but finding out that it wasn't just regular weld smoke but potentially toxic Hexavalent Chromium that we were breathing in all day motivated me to purchase this device to monitor the air quality myself. I am very happy with how this performs, directions are clear and concise which made it easy to use as I have no experience operating this equipment before. When I start it up outside it shows the Particulate Matter of our outdoor air as a reference point, usually around PM 2.5 12 or so, a safe "Good" level. Then after it has adjusted to the outdoor air and I walk through our shop the sensitivity of the device shows and it instantly starts climbing from "Good" to quickly passing "Moderate" and rising to "Unhealthy for Sensitive Groups" then to "Unhealthy" charging on to "Very Unhealthy" then finally reaching the "Hazardous" designation before it finally maxes out the meter at a PM 2.5 of 999. I find the design very useful as it references different levels as mentioned this way, although I hope you don't find yourself in the "Hazardous" level like we usually are in our shop. I chose the beginning of this video to demonstrate what it looks like going from fresh air outdoor to our poor air inside, I had to trim the video due to its length but also included a picture of the meter while it is maxed out at PM 2.5 999.

upon first glance it seems like a decent device. When you get it out and get it going and start to see the numbers you think... hey its working cool. I soon realized I was getting false readings and things just didnt seem consistent so I ordered another brand of detector at a higher price and when it got here i compared them side by side. I followed all guidelines and restrictions but it was obvious the formaldehyde detector was going off for everything. Dont get me wrong it was picking up some but also giving the wrong numbers that were way to inconsistent. What made me give this review is the fact that when I turned it on this morning at work I heard a grinding noise coming from inside. The fan has begun to malfunction. It is an important component of the system since it allows constant outside air to be pulled though rather than sit stagnant. I really wanted to trust it and I dont know if i can even trust the other one but the fact that I was getting crazy numbers back from the same unventalated and unoccupied room within minutes just was the final straw so I'm going to be sending this back right after I finished the review. I usually dont write reviews but I felt compelled since I know how important a device working as designed is and how disappointing it is when they dont. You dont often find true honest reviews so I felt I needed to do one for this. I'm not trashing the seller and I do have a track record of being the lucky one to always pick the broken item off the shelf but in my case it's just not working and I think its only fair to add this review.

The quality is terrible. After charging it once, it said that the PM 2.5 reached 999, the screen flickered, and then it shut down and could not be turned on again. I am applying for a return.

Las lecturas de PM 2.5, PM 10, PM 1.0, temperatura y humedad no concuerdan con los valores verdaderos. En la calibración manual se puede ajustar la sensibilidad del sensor de PM 2.5 hasta mas menos 33%, pero en el equipo que recibí no fue suficiente. El otro ajuste disponible es básicamente sumar o restar un valor constante y se puede lograr que la lectura concuerde con el valor real, pero al poner una muestra de aire con PM=0 en vez de indicar cero muestra el valor que se sumó o restó. No hay ajuste de sensibilidad para la temperatura y humedad, sólo se puede sumar o restar un valor constante a las lecturas. No tengo medios para verificar si la lectura de concentración de substancias volátiles es exacta. Es posible que se trate de un defecto de fábrica, pero decidí pedir un reembolso en vez de un remplazo

As home inspectors with one of the best reputations in the Niagara Falls to Hamilton area of Ontario we are always looking to improve our service. By being able to offer Air Quality testing during our home inspections this further strengthens our position in this market. This equipment is easy to use and share results with a great appealing screen on the monitor. We're very happy with our purchase🔅🔅🔅🔅🔅

There was nothing I disliked about this.... Once calibrated, it showed me that I had a big problem with my air quality due to VOCs from an item I had purchased .. I removed the item..I removed the problem...not confused, headache gone, coordination back to normal, asthma clear...if in any doubt as to what you're breathing is safe...GET ONE...I was a novice in these matters...this cleared my mind and also my breathing.. EXCELLENT

Accuracy quite good. Compare to the readings on my air purifiers.