23. Juli 2020
Effective protection from viruses and bacteria starts in your own bathroom. According to Hygiene Professor Klaus-Dieter Zastrow, rimless toilets featuring a special flush technology can help prevent the spread of aerosol particles – protecting people from potential infections.
Our own bathroom, especially the toilet, is a place where we feel comfortable – and we assume that it is clean. In fact, it is a major source of germs and bacteria. Experts are especially concerned about so-called aerosols – tiny droplets in the air that help to spread germs, which can then cause respiratory infections.
But how do these aerosols make their way into the bathroom? Nearly every commercially available toilet has a toilet bowl with a rim. Anyone who has cleaned a toilet knows that this rim is a critical part of the toilet. It’s difficult to clean underneath this rim with a brush and cloth, and impossible to see what dirt or waste is left behind – even after thorough cleaning. Hygiene Professor Klaus-Dieter Zastrow examined this specific issue, and discovered that the area below the rim is a kind of “reservoir” of germs and viruses. Experts are also concerned about the type of flush found in conventional toilets: Tiny droplets containing germs can spray beyond the edge of the toilet, and remain suspended in air for a short period of time – enough time for people to inhale them.
Women’s magazine Brigitte provided a more dramatic description based on a study conducted by the Medical Center at New York University. According to Brigitte, conventional toilets produce aerosols when flushed – and these combine to form a “toilet water cloud” that spreads out into the surrounding area. If the door is closed or ventilation in the bathroom is poor, it is possible that people could inhale these aerosols – which could in turn cause infections.
One provider of rimless toilets is TOTO, a sanitary ware manufacturer with a special focus on hygiene. TOTO’s European headquarters are located in Düsseldorf, and the company is based in Japan – widely considered a model country when it comes to hygiene. For this reason, it makes sense to look at their developments. Zastrow examined two of the company’s newest toilets, paying extra attention to the innovative “circulating” flush technology: He reported: “This flush creates a circulating whirlpool of water that washes every square centimetre of the toilet bowl several times. The flush water swirls in a circle. This movement keeps the water inside the toilet. One could say that the whirlpool created by the flush spreads fewer bacteria in the bathroom. As a result, this type of toilet is especially well-suited for use in hospitals,” Zastrow continued. And things that help in the hospital could also be helpful at home. The study also closely inspected whether or not droplets had settled on the previously cleaned, high-gloss polished floor surrounding the toilet after flushing, as this would indicate the formation of aerosol particles. The hygiene specialist was able to confirm: “The aerosols that are produced by conventional toilets from time to time are not an issue for rimless toilets.”
When discussing the tested toilets, Zastrow also answered a question regarding whether or not coronaviruses behave the same as the germs he used in the study. From his point of view, there is no difference: “Coronaviruses are part of the stool, which means that there is no difference. They are washed away like all other bacteria.”
Link to the interview with Hygiene Professor Klaus-Dieter Zastrow:
https://www.youtube.com/watch?v=kZxHYc-f5GE
TOTO brings luxury to bathroom culture, creating innovations that deliver the ultimate in design, comfort and hygiene without revealing the sophisticated technology integrated within. Japan’s leading supplier of bathroom products, TOTO develops comprehensive solutions for high-end private and public spaces around the world, including the European market since 2009. The company is shaping bathroom design with innovative sanitary ware, faucets, and, most importantly, WASHLET – selling over 70 million worldwide. TOTO’s Japanese design philosophy reflects a respect for others. It centres on people and their needs, inspiring intuitive, easy-to-use products and elegantly understated designs. TOTO shows this same respect for the environment, developing water-saving technologies that help conserve resources while pursuing its sustainability strategy in internationally recognised initiatives like Climate Group RE100 and the Science Based Targets Initiative.