Brand | EG |
---|---|
Style | Air Quality Monitor w/ PM2.5, TVOC, HCHO, Temp/Humid (B078ZS8RVL) |
Power Source | Battery Powered |
Color | Assorted, Black |
Alarm | Audible |
Operating Humidity | 95 percent |
Sensor Type | Electrochemical |
Material | Plastic, LCD Glass |
Manufacturer | EG |
Part Number | EGVOC |
Item Weight | 7.8 ounces |
Product Dimensions | 5.9 x 2.8 x 1.7 inches |
Batteries | 1 Lithium Polymer batteries required. (included) |
Is Discontinued By Manufacturer | No |
Batteries Included? | Yes |
Batteries Required? | Yes |
Battery Cell Type | Lithium Polymer |
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Ships from: Amazon Sold by: EG Air
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Ships from: Amazon Sold by: Amazon Warehouse
Air Quality Pollution Monitor, Formaldehyde Detector, Temperature & Humidity Meter, Sensor, Tester; Detect PM2.5/PM10/PM1.0 Micron Dust, Test Indoor TVOC Volatile Organic Compound Gas; eBook
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Brand | EG |
Style | Air Quality Monitor w/ PM2.5, TVOC, HCHO, Temp/Humid (B078ZS8RVL) |
Power Source | Battery Powered |
Color | Assorted, Black |
Alarm | Audible |
Operating Humidity | 95 percent |
Sensor Type | Electrochemical |
Material | Plastic, LCD Glass |
About this item
- MULTIFUNCTIONAL & SCIENTIFIC – As our newest model, this indoor air quality monitor accurately assesses temperature in Celsius, humidity level, and multiple measures of air quality including concentrations of formaldehyde, total natural & synthetic volatile organic compounds causing most odors (TVOC), and fine particulate dust matter (PM2.5/PM1.0/PM10) which travel deeply into the respiratory tract, reaching the lung alveoli.
- PORTABLE TESTING – Spot check indoor air quality anywhere or leave device on for continuous monitoring. This easy-to-carry air quality tester can help monitor air quality at home, in the car, and in hotel rooms. The lithium battery provides portable power when DC 5V micro USB charging is not available. Information is displayed on a clear 2.8” 320 x 240 pixel color LCD display.
- ADVANCED FAN & SENSORS – This air quality monitor has a built-in fan to quickly draw in ambient air to allow REAL-TIME measurements. It incorporates a laser sensor to measure levels of dust particles and has a second electrochemical semiconductor sensor to test air quality including formaldehyde and natural/synthetic organic compound levels.
- HEALTHY HOME? – Is your family suffering from sick building syndrome? This air quality tester detects organic compounds like formaldehyde which has suspected links to nasal cancer and lung cancer emitted from many household materials. By measuring particulate pollution, an air pollution monitor can also help you know when asthma may worsen and when to change your home’s air filter.
- ORIGINAL DESIGN & USA BASED SUPPORT – We have Midwest-based technical staff including a chemist to answer any questions you have. Also included will be a 20+ page eBook on Gas and Air Quality Hazards. We have worked with the supplier that holds this air quality detector’s design rights so you can be confident this item is tried and tested.
Additional Details
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- Climate Pledge FriendlyProducts with trusted sustainability certification(s). Learn more
PRODUCT CERTIFICATION (1)
EPEAT products are assessed against criteria including energy use and have a reduced sustainability impact across their lifecycle.
Product Description
Have you gone nose blind to household odors or dust?
Check multiple measures of your home's air quality. This air quality monitor has a FAN onboard that allows REAL-TIME accurate monitoring of temperature (in C), humidity, formaldehyde (HCHO), total volatile organic compounds (TVOC), and micron-sized fine particulate dust (PM2.5/PM1.0/PM10).
Formaldehyde is an environmental carcinogen yet odorless at lower concentrations that can off-gas from various building materials. Detect low levels of airborne organic compound and odors or VOCs emitted from biologic and synthetic sources such as plastics not perceivable to the human nose. Check microscopic inhalable dust levels with PM2.5 levels.
Problems with allergies?
See when you need to change your home’s air filter. Watch the levels of indoor total volatile organic compounds and formaldehyde drop when the windows are opened. Learn where air quality is poorer and where your allergies can worsen. Allergies that are difficult to control with unexplained coughing, runny nose, and shortness of breath may be signs of sick building syndrome.
Technical Specifications
LCD Display | 2.8“ color 320 x 240 pixel LCD |
Power Source | DC 5V USB charging |
HCHO Range | 0-1.999 mg/m³ |
TVOC Range | 0-9.999 mg/m³ |
PM1.0/PM2.5/PM10 Range | 0-999 μg/m³ |
Battery Type | 1000 mAh lithium battery |
Product Dimensions | 150.0 x 67.5 x 37.4 mm |
Product Weight | 170.5 g |
Tips on Use:
- Calibrate on first use, esp. if 0.000 indoor readings noted.
- If the HCHO, temp, or PM2.5 is inaccurate, use the "Sensor Set" Menu found under SET (press D), then SENSOR (press A) to further calibrate device readings.
- Large variations & 9.999 TVOC readings do not indicate an error as this instrument is a sensitive electronic nose; environmental TVOCs vary much and high TVOCs often can result from interference from benign fragrances or odors.
- As the only US based retailer of this item, we have a chemist on staff to answer any technical questions.
Product information
Technical Details
Additional Information
ASIN | B078ZS8RVL |
---|---|
Customer Reviews |
3.8 out of 5 stars |
Best Sellers Rank | #16,830 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #14 in Indoor Air Quality Meters |
Date First Available | November 8, 2017 |
Warranty & Support
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UNBOXING EG Air Quality Pollution Monitor Detector
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Compare with similar items
This Item EG Air Quality Pollution Monitor, Formaldehyde Detector, Temperature & Humidity Meter, Sensor, Tester; Detect PM2.5/PM10/PM1.0 Micron Dust, Test Indoor TVOC Volatile Organic Compound Gas; eBook | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $114.77$114.77 | $89.99$89.99 | $68.25$68.25 | $229.00$229.00 | $15.98$15.98 | $75.99$75.99 |
Delivery | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 |
Customer Ratings | ||||||
Easy to use | 4.0 | — | — | 4.3 | 4.2 | 4.2 |
Accuracy | 3.5 | — | — | 3.7 | 3.8 | 4.0 |
Easy to read | 4.1 | — | — | 3.8 | — | 4.3 |
Sold By | EG Air | Norpolifomor | Kind Innovations | Amazon.com | Amazon.com | zhangyida LLC |
power source | Battery Powered | Battery Powered | Battery Powered | Battery Powered | Gas Powered | Battery Powered |
sensor type | Electrochemical | Electrochemical | Electrochemical | — | — | Electrochemical |
style | Air Quality Monitor w/ PM2.5, TVOC, HCHO, Temp/Humid (B078ZS8RVL) | Standalone version | Home Security | Modern | Radon Gas Test Kit | Air Quality Monitor S-HCHO TVOC PM2.5/10 CO2 |
alarm | Audible | alarm | Audible | Visual | Visual | Visual |
operating humidity | 95 percent | — | 100% | — | — | 95 percent |
weight | — | 250 grams | — | 222 grams | — | 0.7 pounds |
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the readability, performance, and air quality of the gas smoke fire alarm. For example, they mention that the user interface is fairly intuitive, the manual is clear and concise, and that it works great. Some appreciate the appearance. That said, some complain about the battery life and disagree on accuracy, value, and quality.
AI-generated from the text of customer reviews
Customers find the user interface of the gas smoke fire alarm fairly intuitive. They also appreciate the clear and concise manual. The device is easy to calibrate and use, with results that track closely to their expectations. The meter is easy and the graphics are easy to read and understand. The booklet is thorough explaining all the numbers.
"...I appreciate the most is that, once you get used to it, the meter is VERY EASY to read...." Read more
"...The display is easy to read, not too cluttered, the reading is accurate in my experience and the price below $100 is still good value." Read more
"...every 5 minutes or every 30 minutes or whatever - it might be tricky to make it usable - something like a microwave keypad or just choosing from a..." Read more
"The device itself is pretty straightforward to use although the directions should be a bit clearer about the first time using it:..." Read more
Customers like the performance of the gas smoke fire alarm. They say the device works great, is very useful, and is impressed with both the technology and the overall design. Some mention that the monitor is a good tool, and that it performs as expected. Overall, customers are satisfied with the performance and recommend it to others.
"...times, and let a friend use it... It's fascinating, a great tool to help steer you in what you want to buy...." Read more
"...So I bought this and it does apparently work fairly well!..." Read more
"...No issues, No complaints and if I did have any I'm sure customer service would help immediately...." Read more
"...The unit read 54, not too bad. The PM10 was off considerably...." Read more
Customers like the air quality of the gas smoke fire alarm. They say it does a reasonable job of measuring relative air quality, and is helpful in understanding their air quality situation. Some customers also mention that the meter can be used to qualify air improvement and know your breathing better air. Overall, customers are satisfied with the air performance of the product.
"...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..." Read more
"...Their efficient respiratory systems are exceptionally sensitive, hence the inhuman practice of using canaries in coal mines to warn of deadly..." Read more
"...4. Changes in C02 level are measured more accurately and with an acceptable update interval.Cons:1. Doesn't measure below 400 PPM...." Read more
"...It showed absolutely nothing but green and clean fresh air. No contaminates other than some point 003 dust...." Read more
Customers like the appearance of the gas smoke fire alarm. They mention that it looks good, the screen is nice, and easy to read. They also appreciate the practical design and the clear display. Overall, customers are satisfied with the product's appearance.
"...They only sell like five colors of cabinets. The cabinets really looked amazing, even saw that the boxes were made of plywood...." Read more
"...this monitor because it fits on a corner of my desk and gives an excellent clear display...." Read more
"...Leave it plugged in.Water test strips! Lol. Cute...." Read more
"...And the screen is nice and easy to read. The menu's suck though and it broke after what I would consider below normal use. Just...." Read more
Customers are mixed about the accuracy of the gas smoke fire alarm. Some mention that it seems to be reasonably accurate and sensitive, while others say that they're having trouble with the calibration and the limits of accuracy.
"...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...." Read more
"...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...." Read more
"...The replacement unit still doesn't give accurate PM2.5 readings...." Read more
"...Its HCHO and VOC was precise, but it had no alarm...." Read more
Customers are mixed about the value of the gas smoke fire alarm. Some mention that the money was well spent, it's decent for the price, and easy to use. However, others say that the readings go the maximum, making it essentially useless.
"OK so this device is fantabulous!! OK you MUST calibrate it correctly!!..." Read more
"...Good to retest. Yes our garage needed a fan because it's vents couldn't keep up. Home was built in 2021." Read more
"...For this reason, the unit is not useful to me as someone with respiratory issues that needs the US air quality results...." Read more
"All around sturdy, compact and portable CO2 monitor for an reasonable price.Pros:1...." Read more
Customers are mixed about the quality of the gas smoke fire alarm. Some mention that it's of very high quality, reliable, and accurate, while others say that it was unreliable, poor quality, and broke in a week.
"Its not industrial quality and I do not believe it is designed for that kind of environment, but it is good enough for casual use...." Read more
"All around sturdy, compact and portable CO2 monitor for an reasonable price.Pros:1...." Read more
"...So Annoying, can not feel worse than this. It is not only about product quality issues, but the problem really ruined my life and created mental..." Read more
"Overall, it seems good. It is not a lab quality device and bares no certification, calibration, or compliance stickers, or any report on accuracy...." Read more
Customers are dissatisfied with the battery life of the gas smoke fire alarm. They mention that it loses its charge right away, does not hold charge very well, and lasts for minutes when they want to monitor air. They also say that it drains the battery pretty fast and needs to be constantly charged every 3 or 4 hours or it will turn off.
"...The battery is laughably inadequate. It doesn't even last a day unplugged (micro USB, which is a pain)...." Read more
"...Few years later it doesn't charge anymore...it constantly gives the sign "low voltage" and to charge it...." Read more
"What is annoying about the product is that it goes though a battery charge in only a few hours...." Read more
"...A good reading takes 5 minutes and it will barely hold a charge so sometimes it will die on me if I’m testing a couple areas in the house...." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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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.
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.
Reviewed in the United States on November 29, 2018
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.
Top reviews from other countries
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
Secondly, on their webpage, it is stated that returns are accepted within 30 days. However, when I requested a return on January 1st, it was rejected. After ongoing arguments, they responded on January 7th, claiming that it was already beyond the 30-day return period. Isn't the issue that they consistently rejected my request, prolonging the process until it expired? From the seller's perspective, this is absolutely unreasonable.
Moreover, everything is in Chinese, posing a challenge for those who do not understand the language. Additionally, they essentially do not permit returns unless there is a product failure; dissatisfaction with the product is not considered a valid reason for return. Consider this a cautionary note about the product.
Having said that I have no reason to 'disbelieve' the data it's presenting to me.
I bought this after being hospitalised due to a rare bacterial infection which, possibly coincidentally, occurred after I had removed some tiles in my bathroom after spotting a leaking toilet seal.
For peace of mind, once I had returned home, I thought I'd buy an air quality tester to see the state of the air quality in my flat.
I'd already covered the open tile area with pvc sheeting. The air quality in various rooms, including the bathroom area, was of good quality. I placed this monitor inside the pvc sheeting (and re-sealed it) to see what it said about the air there (that had been open prior to my hospitalisation). It came up as 'unsatisfactory' - which may have been the cause of my illness.
I would say this gives you peace of mind if you suspect the air in a room is not of acceptable quality, or gives you the evidence to take corrective steps.
After replacing the tiles and re-grouting the bathroom that had the missing section, the air quality is reading 'good' again.
I would recommend this to give an indication if something may need further investigation.