VOC breath testing is an emerging, non-invasive approach to detect disease-related chemical patterns in exhaled air. In Parkinson’s disease (PD), characteristic VOC profiles appear to mirror changes in metabolism, oxidative stress and the gut–brain axis—opening the door to earlier diagnosis and objective monitoring alongside motor scales and olfactory testing. Nature Why breath? Recent clinical work […]
Electrogustometry (EGM) is an objective way to measure taste function by applying tiny, precisely controlled electrical stimuli to the tongue or oral mucosa. Because EGM quantifies taste thresholds in microamps rather than relying solely on self-report with chemical solutions, it’s a powerful complement to smell (olfactory) assessment in comprehensive chemosensory clinics and research labs across […]
When conducting air sampling—particularly for the analysis of volatile organic compounds (VOCs)—choosing the right sampling material is essential. A commonly used option is the Tedlar bag. But are these gas sampling bags truly suitable for collecting VOCs? In this article, we take a closer look at the properties of Tedlar bags and explain why this […]
In optics and ophthalmology, various types of self-adhesive foils are applied to eyeglass lenses to influence or correct vision. Two commonly used options are the Bangerter occlusion foil and the Fresnel prism foil. Although they may look similar, they serve very different purposes. Bangerter Occlusion Foil – to Suppress Vision Bangerter occlusion foils are translucent […]
If you intend to reuse Tedlar bags, it is essential that they are cleaned properly. As mentioned in our previous blog, our recommendation is not to reuse Tedlar bags (or any other type of sampling bag such as multi-foil, Kynar, or Teflon bags). However, if you do choose to reuse them, please carefully follow the […]
Tedlar bags are used worldwide for the temporary storage of air and gas samples in applications such as odor research, emission measurements, and environmental analysis. A frequently asked question is: Are Tedlar bags reusable? Reuse is possible, but with important considerations Although Tedlar gas sampling bags can theoretically be reused, this is only recommended under […]
Restoring the Lost Sense: PRP Therapy for Olfactory Dysfunction? For millions of people affected by COVID-19, the loss of smell has been more than a minor inconvenience — it’s a life-altering condition that impacts everything from appetite to emotional well-being and safety. While many patients gradually regain their sense of smell, a significant number continue […]
A smell identification test is a type of olfactory assessment in which different odors must be recognized and named by the test subject. In other words, it involves the identification of the presented odors. Although these tests come in various formats and contain different odors, their core principle remains the same: the test subject is […]
Androstenone is one of the most fascinating—and polarizing—compounds in the world of scent. Found in human sweat, saliva, and urine, as well as in pigs, this steroidal pheromone has been studied for its potential role in attraction, mood, and social signaling. For some, it’s an alluring aroma; for others, it’s downright offensive. But what exactly […]
Imagine being unable to smell roses but perfectly able to enjoy the aroma of freshly brewed coffee. This selective loss of smell is called specific anosmia, a fascinating and often overlooked condition. Unlike general anosmia, where the sense of smell is entirely absent, specific anosmia refers to the inability to detect specific odors while the […]
