The Hohenstein Institute offers Germany-wide exclusive accredited anti-dust-mite checks
On average a person spends 8 out of 24 hours asleep. Over a year, this is almost 3000 hours spent in bed, or rather, on a mattress. However, it's not just people who feel comfortable here. Mites ranging in size from 0.1 mm - 0.5 mm also feel at home.
Close-up of a mite:faeces particles reach mucus membranes via the respiratory tracts which can trigger typical symptoms:runny nose, itchy eyes and, in severe cases,even shortness of breath and asthma
® Hohenstein Institute
A mattress provides perfect conditions for mites. An average temperature of 25 degrees, humidity of up to 70 percent as well as human skin flakes on which the white arachnids feed. However, as well as in mattresses, mites are also found in bedding, upholstered furniture and carpets.
Between 4 and 5 million Germans suffer from an allergy to house dust mites, which is caused not by the mite itself, but by their faeces.
Stirred up faeces particles reach the individual's mucus membranes via the respiratory tracts and, if the individual is allergic, they trigger typical symptoms including a runny nose, streaming or itchy eyes and, in severe cases, even asthma and shortness of breath.
The Hohenstein scientists from the department for Hygiene, Environment & Medicine are testing the efficiency of textiles in reducing house dust mites and mite allergens or providing an effective barrier against them.
Tests are therefore being carried out at the Hohenstein Institute on the impermeability of bedding and encasings against mite faeces. Encasings are special mattress covers which are used to avoid contact with allergens. Scientific studies have shown that they offer relief from house dust mite allergies.
The challenge for the manufacturers is to design the casings in such a way that they form a physical barrier created from the fabric structure and the laminate network. This must also be sufficiently resistant to mite faeces when the sleeping person turns over during the night. The special feature of the encasing test carried out by the Hohenstein Institute is that real mite faeces from house dust mites are used.
Surfaces, seams, and zip fasteners are applied with real mite faeces and the strain during sleep is reconstructed through pressure and friction. The quantity of mite faeces allergens which manage to get through the material during the simulated use is measured ("Der p1"). The value for this test must not exceed two micrograms (corresponds to the sensitization threshold for persons allergic to house dust mites).
The test for resistance (barrier effect) against mite faeces allergens is a DAkkS-accredited service and will be carried out exclusively by the Hohenstein Institute across Germany using real mite faeces.
To help persons with allergies to make their decisions, tested materials are awarded the Hohenstein quality label "House Dust and Mite Barrier". This is particularly interesting for the health service and the hotel and hospitality industry as the quality label gives a reliable signal to customers and guests. In addition, complaints can be effectively minimised with the test and safety for consumers increased.
A further DAkkS-accredited test by the Hohenstein Institute is the examination of the long-term impact of textiles and chemicals that should restrict the development of house dust mites. This long-term test is carried out in accordance with standard NF G39-011. House dust mites are applied to the test samples and controls. After two population cycles, i.e. 6 weeks, under optimum conditions for the mites, the number of living mites is either counted directly using a stereo microscope or, in the case of three-dimensional test samples, the allergen content ("Der p1") is determined.
Products that are very effective at preventing the growth of the mite population receive the certificate "Anti Dust Mite". On demand it can also be awarded the quality label "Anti Dust Mite". The customer can thus easily see that he is purchasing a product suitable for persons allergic to house dust mites - a key purchasing decision.
Both quality labels presented here, "House Dust and Mite Barrier" and "Anti Dust Mite", can be easily combined with other quality labels from the Hohenstein Institute, for example, the "Sleep Comfort Vote" or "Hypoallergenic".
Contact person for anti-mite tests:
Hygiene, Environment and Medicine
Tel: +49 7143 271 444
Fax: +49 7143 271 94444
Andrea Höra | idw - Informationsdienst Wissenschaft
Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View
22.06.2018 | University of Sussex
New cellular pathway helps explain how inflammation leads to artery disease
22.06.2018 | Cedars-Sinai Medical Center
In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
22.06.2018 | Materials Sciences
22.06.2018 | Earth Sciences
22.06.2018 | Life Sciences