Our blog covers indoor air and air quality

Our blog is a guide, a reference, and an information source all in one. Here you’ll find well-grounded knowledge, practical tips and current studies about air quality and a healthy indoor climate.

We test Eoleaf's NeoPur 400 air purifier
Test measurements 10/30/2025

Review: How Good Is Eoleaf's NeoPur 400 Air Purifier Really?

We tested Eoleaf's NeoPur 400 air purifier. Learn here how it cleaned pollutant-laden air and how air quality changed as a result.

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The air-Q and the CellActivator by CellGenius as an example of modern air purifiers
Test measurements 05/05/2025

The CellActivator Air Purifier by CellGenius, Hands-On Tested

Air purifiers are an effective solution for improving indoor air quality. In this article, we test the CellActivator by CellGenius, which uses so-called Light-AirIon technology. We tested with the air-Q whether the device lives up to its own ambitious claims.

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Collage image of the Blueair Classic 680i air purifier and air-Q air monitor next to an incense cone
Test measurements 09/19/2024

air-Q Lab: The Blueair Classic 680i Air Purifier Put to the Test

The Blueair Classic 680i air purifier promises clean indoor air – but how well does it really filter pollutants? Its effectiveness was tested in our experiment with an incense cone and deodorant. Find the results here.

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Man in a cooking apron frying vegetables in a kitchen, with the air-Q air monitor and Briiv air purifier in the foreground
Test measurements 09/05/2024

air-Q Lab: How Effective Is the Briiv Air Purifier Against Particulate Matter From Cooking?

Cooking produces invisible particulate matter that can significantly impair kitchen air quality. The natural air purifier Briiv promises to effectively reduce this pollution. We measured whether it works in a real-world experiment with our air-Q air monitor.

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Male hand holding a blue e-cigarette, with the no-smoking symbol in the top left
Test measurements 08/08/2024

Secret Vaping in School Bathrooms or Public Buildings: How E-Cigarettes Affect Air Quality

Vaping is becoming increasingly popular, especially among teenagers. This brings challenges regarding the health of minors and indoor air quality in places like schools and public buildings. But how does the vapor affect air composition, and how can these changes be measured?

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Burning lavender scented candle on the right, air-Q air monitor on the left against a brown background
Test measurements 11/03/2023

air-Q Lab Hands-On Test: How Unhealthy Are Scented Candles?

In our Halloween special, we got to the bottom of the question: can scented candles and the like be harmful to health, even carcinogenic? We measured just how much the burning candles change indoor air quality. Find the results here.

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Briiv air purifier with moss refill pack and air-Q Lab logo on a green background
Test measurements 08/11/2023

Briiv – The Most Sustainable Air Filter? We Tested It in the air-Q Lab!

Clean indoor air through plant power: that's the promise of the Briiv air filter, made of 90 percent natural and renewable materials. We measured with our air-Q air monitor whether this self-proclaimed most sustainable air filter in the world lives up to these high expectations. Read the test results here.

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Collage of the CityBreeze billboard from several angles with the air-Q air monitor standing in front of it, and the caption "We measured it: CityBreeze – green marketing put to the test."
Test measurements 07/28/2023

Green Billboards for Clean City Air – How Effective Is CityBreeze Really?

Green City Solutions GmbH promises clean, fresh air for all city residents. Regenerative bio-tech filters made of moss are meant to purify ambient air. Whether this actually works is what we tested with our air monitor at a CityBreeze billboard in Leipzig. Find the results here.

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What helps against heat? | air-Q
Test measurements 07/12/2023

Heat Wave in Germany – Does THIS Trick Actually Help?

Many anti-heat tricks are currently circulating online, mostly focused on trying to cool down. We tested a fan tip from the internet and measured whether room air actually cools down. We've also summarized more heat tips at the end of the article.

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Printer with paper loaded against a gray background, with the white air-Q Lab logo on the left half of the image
Test measurements 04/28/2023

air-Q Lab: The Danger of Ultrafine Particulates from Your Printer – We Measured It

Ultrafine particulate matter is man-made and dangerous. These tiny particles penetrate deep into the body and can cause cancer. Laser printers are an often-overlooked source. In a hands-on test, we checked how much particulate matter a printer produces. Read the results here.

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Do closed windows protect against particulate matter? | air-Q
Test measurements 01/06/2023

Do Closed Windows Protect Against Particulate Matter?

Exhaust fumes and more pollute our air, often exposing it to particulate matter. The very small diameter of the particles makes this dangerous. This lets the dust enter the airways and affect health. Do closed windows prevent particulate matter from entering a home? We measured it with our air-Q air quality monitor.

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Vapes from an Elf Bar e-shisha against a brown background with the air-Q Lab logo.
Test measurements 12/09/2022

Vaping at Home: How Do E-Shishas Affect Air Quality?

Temperatures are dropping, and it's damp and cold outside. Anyone who used to smoke outside now reaches for an e-shisha from Elf Bar & Co. and vapes indoors instead. After all, vapes don't burn tobacco, they atomize pleasant scents. But how healthy is the vapor really? We measured the effects on air quality with our air-Q air quality monitor.

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