10. January 2022

Lactose-free products: important facts about food labelling

Lactose-free Milk

In order to advertise special products in the trade accordingly, manufacturers must comply with legal limit values

Lactose intolerance is one of the most common food intolerances worldwide. In Switzerland alone, every fifth person is affected. It has now been proven that almost all people become lactose intolerant in the course of their life and that they can no longer tolerate dairy products or tolerate them significantly worse. The reason: In order to process milk sugar (lactose) in the body, the enzyme lactase is required. Its production, however, declines with increasing adulthood. Because lactose is found in many products to improve consistency or as a carrier, the population comes into contact with it significantly more than in previous generations – an explanation for why the number of lactose intolerant people is increasing.

In contrast to cow’s milk allergy, in which the body reacts to the milk protein, the immune system is not involved in lactose intolerance; the body simply cannot process the milk sugar. Lactose intolerant people can therefore replace appropriate foods such as milk with lactose-free products if necessary. Grocery stores now offer a large selection of appropriately declared special products.

But when can dairy products be described as lactose-free? Who is responsible for correct food labeling and do all dairy products automatically contain lactose?

We have put together answers to some important questions about the legal requirements for manufacturers of food labeling.

Food labeling of packaged goods

The European Food Information Regulation regulates what information product packaging must contain. Among other things, it is important for manufacturers to list all ingredients according to their proportion of the total weight in descending order as well as all additives (emulsifiers, flavors).

Particularly strict rules apply to allergen labeling. It currently comprises 14 substances to which people may be allergic or oversensitive. In addition to milk, these include soy, wheat and peanuts. Allergenic ingredients must be clearly highlighted in the list of ingredients – for example in bold or capital letters. If a product contains milk or milk components, these must be explicitly named as such.

The labeling obligation for food also applies to operators of online shops who sell prepackaged food. All mandatory information about ingredients, allergens, etc. must be made available to the consumer before the purchase is made.

Limits for lactose-free products

Unprocessed products such as cow’s milk have the highest lactose content. In cheese, on the other hand, the milk sugar is only present in small quantities. In general, the longer a dairy product has matured, the less lactose it contains, as the lactose is broken down into its components during the maturation process. Milk chocolate, for example, still has a lactose content of around 13 percent, while cheeses such as Parmesan or Gouda usually have less than 0.1 percent lactose.

Food retailers now offers a variety of lactose-free products. In contrast to foods labeled as vegan, which are often based on plant-based milk alternatives such as soy, oats or almonds, lactose-free milk or yoghurt are also made from cow’s milk. The lactose contained is split into the building blocks glucose and galactose during the manufacturing process, which means that the products can be consumed by lactose intolerant people without any problems.

According to the ordinance of the Federal Department of the Interior (FDHA) on special foods, a food is considered to be lactose-free if the ready-to-eat product contains less than 0.1 g of lactose per 100 g or 100 ml. Only then can manufacturers advertise and declare their dairy products as lactose-free. Products such as hard cheese, which generally contain little or no lactose due to the long ripening time, can be described as “naturally lactose-free”.

Trace information on food packaging

Traces of lactose cannot be ruled out in many industrially manufactured products – a company often produces both lactose-free products and foods containing lactose. Mixing (contamination) can therefore occur during transport, storage or during the manufacturing process. According to food legislation, a so-called “may contain” (may contain milk, may contain traces of milk) must appear at the end of the list of ingredients be advised of unintentional mixing if the lactose content could exceed 1 gram per kilogram or liter of ready-to-eat food. Possible mixtures below this limit can be voluntarily shown with such a notice. In principle, manufacturers must be able to prove that all precautions have been taken to prevent contamination during production.

Reliable quality management through regular analyzes

The manufacturers themselves are responsible for ensuring that their products are correctly labeled, that all ingredients are identified and that they are entitled to use the “lactose-free” label. In order to meet the legal requirements, the food labels should be checked by professional service providers. Depending on the manufacturing process, special laboratories such as Biolytix rely on tailor-made analytics: Lactose-free testing of foods is offered for all work steps in the food manufacturing process – from the raw material to the end product and in addition to hygiene tests.

Contact us

16. November 2021

Christmas 2021: What you need to know for your planning and logistics

Weihnachten 2021: Öffnungszeiten

Christmas and the end of the year are fast approaching. Would you like to use our services during this time and have samples analyzed in the laboratory? – You’re welcome to! So that you can plan accordingly, we ask you to observe the following information on our sample submission and opening times.

Our laboratory will be open Monday through Friday the week before Christmas and after Christmas.

Note for the delivery of microbiological samples on Friday, 24.12.2021:

Food, drinking water and legionella samples can only be accepted until 12 noon.

Note for drinking water samples with result request before Christmas – Microbiology:

In order to guarantee result reports for drinking water analyses before Christmas, we need drinking water samples by Tuesday, December 22.

Note for GMO and allergen samples in express mode with result request before Christmas:

For express, next-day and superexpress samples, we can only guarantee a result before Christmas if the samples arrive at our laboratory in Witterswil by and including Thursday, December 23, 2021 by 12 noon!

From Monday, January 3, 2022 we will be back with normal opening hours for you!

Thank you for your understanding, we wish you happy holidays!

-Biolytix Team

5. November 2021

Legionella in the dental practice: Self-control through regular water analyzes

Legionellen in der Zahnarztpraxis – Selbstkontrolle durch regelmässige Wasseranalysen

The dentists’ water systems in Swiss dental practices are sometimes heavily contaminated with germs. The hygiene in the dental practice can be actively improved through water tests and hygiene management.

The water quality in dental treatment units: a topic that has been discussed for years because it is inadequate in many Swiss dental practices. Of over 260 samples from 21 dental practices in German-speaking Switzerland, almost 60 percent were heavily contaminated with germs last year. Many samples had values of tens to hundreds of thousands of colony forming units (CFU) per milliliter of water. For comparison: the legal upper limit of 300 CFU/ml applies to drinking water.

Since there are no binding legal standards, the dental practices themselves have to take action and establish reliable hygiene controls – for example through cooperation with independent analysis laboratories such as Biolytix. With “Dentalytix”, the laboratory for molecular biological and microbiological analysis has specialized in testing the quality of the water in dentist chairs and in comprehensive hygiene monitoring for dental practices and dental hygiene businesses.

Legionella in dental practices – dental units provide an ideal breeding ground

As so-called environmental germs, Legionella can be detected in almost all natural humid environments in mostly small quantities. On the other hand, artificial man-made water systems offers them best conditions to multiply extensively. The legionella concentration in the water is strongly dependent on temperature, the bacteria prefer values between 25 and 45 degrees Celsius. The numerous small tubes through which the fresh water runs within the dental equipment of a dental practice, form an ideal breeding ground for the Legionella pneumophila bacterium.

Dental treatment often results in minor injuries or larger wound areas in the oral cavity, through which various germs can get into the human bloodstream. In addition, the water is atomized into fine aerosols during dental treatment by rapidly rotating devices such as the drill. These aerosols are absorbed through the respiratory tract and are a frequent route of infection for the life-threatening Legionnaires’ disease. Lung disease caused by Legionella has increased in Switzerland in recent years.

In 2019, 582 cases of Legionnaires’ disease were recorded; five to ten percent of the diseases were fatal.

Comprehensive practice hygiene and regular water analyzes by independent laboratories

In response to the increasing number of diseases caused by Legionella, the FSVO, which is responsible for drinking water, set two maximum values for Legionella in water from sanitary facilities in 2017 – these are regulated in the food legislation.

However, there are no binding standards based on defined limit values – such as for the bacterial load in water systems in dental practices. Dental practices are also not obliged to test the water quality regularly. The problem of contaminated water in dentists’ chairs has been known for a long time and is not limited to Switzerland. In Germany, for example, Legionella was detected in every fourth dental chair in 2013 by the Hessian Center for Health Protection.

So what can practices do to improve water hygiene and thus protect the health of patients and practice employees? – In addition to the daily rinsing of the dental units for at least three minutes before starting work, the cooperation with independent analysis laboratories such as Biolytix serves to prove correct operation through regular water tests. The company offers comprehensive hygiene monitoring for dental practices and dental hygiene businesses. The professional cleaning of surfaces and devices as well as the water quality on the dentist’s chairs and the hygienic status of the hands of the staff are tested. The total number of germs can be reduced by taking appropriate measures.

At least once a year, the water in dental units should be microbiologically examined using water tests – embedded in a comprehensive hygiene plan for dental practices. As a long-term goal, the practice staff must be given guidelines that have long been used for the sterilization of practice devices, for example. Clear guidelines and checklists are required in order to document the tests of the water and therefore the water hygiene, to reduce the total number of germs in the future and to actively contribute to the prevention of Legionella diseases through reliable hygiene controls.

It is very important to adhere to the hygiene standards, especially during the corona pandemic. That is why we recommend regular hygiene checks! We are happy to answer any questions you may have.
Contact us!

20. November 2020

Biolytix: Opening hours over Christmas and New Year 2020


Our laboratories are only open on certain days during Christmas and New Year. Please note the adjusted dates for your planning and logistics:

Biolytix will be closed on the following days:

– Christmas: Friday, 25. December 2020
– New Year: Friday, 1. January 2021

Please note the following for sample delivery:

Drinking water samples before Christmas – Microbiology
To guarantee results before Christmas, we need drinking water samples by Monday, 21. December
Food, drinking water and legionella samples can be taken up to and including Thursday, 24. December until 12 noon.

GMO and allergen samples in express mode
For Express, Next-Day and Superexpress samples, we can only guarantee a result before Christmas if the samples arrive at our laboratory in Witterswil by and on Wednesday, 23. December 2020!

From Monday, 4. January 2021 we will be back with normal opening hours!

Thank you for your understanding, we wish you a Merry Christmas!

-Biolytix Team

21. October 2020

CertiQua awards quality label "very good" to the company Biolytix AG

Witterswil, 20. October 2020 – Biolytix AG from Witterswil has received the award “very good” from CertiQua – it is one of the top companies within its industry.

The CertiQua quality label only awards this distinction to companies that regularly receive top marks from their customers. CertiQua is an independent organization and ensures that the performance of the companies is evaluated based on real customer feedback. The survey focuses on the factors of adherence to delivery dates, competence, customer orientation and price-performance ratio.

“An excellent performance” emphasizes Caroline Roosens of CertiQua, “this proves that for Biolytix AG the satisfaction of its customers is the top priority”.
Even after the awarding of the label CertiQua continuously checks if the customers are still satisfied. Private and business customers are thus always informed about the best qualified companies.

Adrian Härri, CEO of Biolytix, is happy about the label: “This award shows us that we fulfill the wishes and needs of our customers and that our work is appreciated”.

The current rating of Biolytix can be viewed here:
Biolytix AG – CertiQua Firmendetails

About CertiQua


The independent evaluation portal CertiQua determines the customer and quality orientation of trade and service companies. Customers of these companies receive a unique link for each order, where they can rate the order fulfillment, competence, customer orientation, price-performance, etc. Companies that are continuously rated “very good” by their customers receive the CertiQua quality label. The awarded companies can be easily searched for by zip code on the CertiQua website.

2. September 2020

Microbiological testing of hygiene masks according to ISO standards


Witterswil, 2. September 2020 – Hygiene masks are now an everyday product. However, masks of varying quality are found in circulation. This fact was also discovered on 1. September by the Swiss program “Kassensturz”.

If you would like to check whether your masks have been stored properly and whether the regulations according to ISO standards have been fulfilled by the producer, we are the right partner.

For medical protective masks of type II, a test of the germ content according to EN14683 with examination of the microbiological purity according to ISO11737-1 is required for official marketing. The test according to ISO 11737 also determines the presence of mould and fungi.

We can offer the following analyses: Microbiological purity (bioburden) according to ISO11737-1

An identification of morphologically different moulds can then be carried out using mass spectroscopy (MALDI-TOF-MS/MS). A classification of the pathogenic potential for the detected moulds is also possible afterwards.

Further analyses:
– Bacterial filter performance according to EN14683 Appendix B
– Determination of breathability (differential pressure) according to EN14683 Annex C
– Testing against penetration/ splash protection according to ISO22609
– Biocompatibility test for medical devices: Cytotoxicity test according to ISO10993-5


– Kassensturz – Hygienemasken vom 2. Sept 2020 (in German)-
Photo by Noah on Unsplash
Contact us with questions.

15. July 2020

Coronavirus Health Monitoring for Employees and Companies an important component of personnel hygiene concept


Witterswil, 15 July 2020 – Since mid-June 2020 many measures to combat the new coronavirus in Switzerland have been relaxed by the Federal Council, but a residual risk still remains.

The restrictions and additionally implemented hygiene rules required process adjustments in many companies. The individual rules of conduct as well as the absence of numerous customer visits have changed the daily business routine for many companies.

With the notification dated 24. June 2020, the federal government, based on the updated sampling strategy of the FOPH, assumes the costs of molecular biological and serological analyses performed on an outpatient basis and related services for SARS-CoV-2 for persons who meet the suspicion, sampling and notification criteria of the FOPH dated June 24, 2020.

Unfortunately for many companies and enterprises the criteria of the FOPH are not fulfilled, but the daily business must continue nevertheless; Biolytix has put together a special offer for exactly these affected companies.

Companies that want to combine preventive corona measures with a systematic and pragmatic monitoring of their employees can contact us. This ensures not only the safety of the employees, but also the general process safety of the company.

Example of a Possible Monitoring Process

We examine your throat swab samples, which are taken by your company physician, for SARS-CoV-2 using molecular biological methods and thus detect acute infections or potential virus excretion.

In addition, we can also test blood samples taken by your in-house medical team for specific SARS-CoV-2 IgG and IgM antibodies. These indicate survived infections and thus a possible existing immunity.

We would be pleased to prepare a customer-specific offer for the systematic testing of your employees.

BAG_Coverage Analyses for SARS-CoV-2
Photo by CDC on Unsplash
Please contact us.

1. July 2020

GobiX GmbH and Biolytix AG join forces to deliver turn-key CE-certified COVID-19 test kit production systems


Enabling independent onsite production of test kits anywhere and on demand

Baar, Switzerland – 30 June 2020 – GobiX GmbH, a MedTech start-up, and Biolytix AG, an ISO 17025-accredited service laboratory based in Switzerland, announce their partnership to address the global shortage of COVID-19 test kits.  This initiative is empowered by Formlabs, a leading 3D printing company.  The partnership will allow GobiX GmbH to quickly provide COVID-19 nasal testing swabs, virus-deactivating and conserving lysis buffer for fluid collection and knowledge transfer to ramp up independent testing facilities anywhere in the world where they are needed.

The multi-disciplinary team of experts from GobiX GmbH and Biolytix AG quickly came together in Switzerland following a shortage of COVID-19 test kits – particularly the nasopharyngeal (NP) swabs – during the peak of the outbreak in Switzerland in March.  In less than a month, Switzerland had sufficient means and know-how to produce its own test kits to cover the testing of people with COVID-19 symptoms.

The swabs and viral-collection fluid normally used in Switzerland prior to the COVID-19 crisis were produced in other countries, leaving Switzerland vulnerable to supply chain disruption. Because of global shortage, and in order to be independent of international supply chains, the Surgeon General of the Swiss Armed Forces, responsible for coordinating preparations and the deployment of Swiss public health resources in special and exceptional situations, launched a collaborative effort to develop production inside Swiss borders.

Thanks to swift collaboration between the Swiss Armed Forces, GobiX GmbH, its partner Biolytix AG, and volunteer healthcare experts, Switzerland now has a COVID-19 test production chain enabled by Formlabs 3D printing technology within its borders that was put in place in less than a month.

During this time, GobiX GmbH applied its medical and engineering expertise, and tapped into its network to create a scalable, fast system for swab and transportation fluid production. The swab design – developed by GobiX GmbH co-founder Patrice Gobat, a mechanical engineer and 3D printing expert from the Swiss Federal Institute of Technology in Zurich (ETH) – can be printed at scale on demand, with each office-printer sized printer having a capacity of up to several hundred swabs per day.

Physician and GobiX GmbH co-founder, Michel Bielecki, said that who lead the prototyping and deployment of the solution, said, “Two of the big problems with COVID-19 testing are 1 –  the availability of testing kits because we rely on external production and 2 –  accuracy and comfort since the use of a cotton swab, currently widely-used due to no other options, can be very unpleasant and is highly inaccurate for diagnostic purposes. Our solution doesn’t completely solve the shortage, but it ensures that we have an efficient and comfortable swab and can bypass short-term shortages during times when timing is crucial.”

The swabs, designed by GobiX during the first Swiss COVID-19 outbreak in Ticino, Switzerland, and clinically-tested by a team of ten doctors and medical laboratory analysts for collection efficiency, testing ease, and patient comfort, are CE-certified as a Medical class I device and in full production.  GobiX GmbH produces and packages the swabs for distribution among test locations across the country.

Adrian Härri, CEO, Biolytix AG, said, “Today, the key to fighting COVID-19 is simply identifying those who are infected as early as possible.  This is the motivation behind our collaboration with GobiX and Formlabs – we are teaming to address the critical need for tools and equipment needed to safely collect and transport viral samples.  One of the big challenges is getting the test samples to the analysis facility, without the risks involved of transporting a pathogenic virus.  Our sample collection fluid deactivates the virus upon contact, preserves the viral RNA for up to four days and does not require cooled transportation – greatly facilitating testing in remote locations and the safety of anybody involved.  Additionally, comparative tests have shown that the 3D printed swabs yield a higher amount of RNA, compared to its traditional counterparts, significantly improving the accuracy of the real-time PCR tests. We are extremely proud that our solution will contribute to accurate testing during this global crisis.”

Stefan Holländer, General Manager of Formlabs EMEA, explained, A single Form 3B printer can produce hundreds of swabs a day using our Surgical Guide resin, a certified biocompatible Class 1 material. The Form 3B printer enables fast, localized production of critical tools needed to support healthcare workers on the frontline of the COVID-19 pandemic. We are delighted that 3D printed swabs by GobiX GmbH in Switzerland have now become a segue to expand COVID-19 testing to save lives in hard-hit areas, around the world, quickly and economically.”

GobiX GmbH is now spearheading a partnership with Inqaba Biotechnical Industries (Pty) Ltd to distribute swab production systems throughout sub-Saharan Africa. Dr Oliver PreisigExecutive Director of Inqaba Biotechnical Industries (Pty) Ltd, explained, “All of the African continent is impacted by the shortage of COVID-19 test components, compounded by border closing. We have a unique ability to make widespread testing possible throughout Africa thanks to this strategic partnership with GobiX GmbH for the swab production systems and our own infrastructure with offices in Ghana, Nigeria, Kenya, Senegal and Tanzania and staff in Namibia, Uganda, Cameroon, Mali and Zimbabwe. This unique network for a life science company is currently essential to support the COVID-19 testing efforts in sub-Saharan Africa as we have team members in each of these countries. We are poised to implement the swab production system immediately and without delay, get people tested and help control the pandemic.”

Prof. Patricia Schlagenhauf, Co-Director of the WHO Collaborating Centre for Travellers’ Health, at the University of Zurich (UZH) and COVID-19 research collaborator with GobiX co-founder M. Bielecki, said “Having access to tests and test kits is so important especially in resource limited, vulnerable countries. Without tests, developing countries will not be able to monitor and control the spread of COVID-19.”

Press Release (EN)

2. June 2020

Food Supplements Purity Testing in NMN and Heavy Metal Screening


Swiss law defines dietary supplements as foodstuffs intended to supplement the normal diet. They consist of single or multiple concentrates of vitamins, minerals, or other substances with a nutritional or physiological effect and are marketed in dose form.

The law also makes a distinction between dietary supplements (for example low dose vitamin products and enriched foodstuffs) and medicinal products (for example high dose vitamin products and their claims of medicinal effects).

Many food supplements, nutritional additives and other non-regulated dietary supplements go through cycles of popularity. Biolytix observes these cycles through the different customer requests it gets. One particularly common question is to verify the purity content of Nicotinamide Mononucleotide or NMN.

Nicotinamide Mononucleotide (NMN) is often sold through internet marketplaces, with promises to slow down the pace of ageing and claims to promote a longer life. Because of high demand and cost of this compound, it seems that some untrustworthy companies have begun selling fake NMN supplements.


Testing Purity of NMN and the absence of Heavy Metals


We offer NMN purity analysis and strongly suggest to also test for heavy metals, to make sure that the product contains what it promises.

  • Nicotinamide mononucleotide Analysis (HPLC-MS/MS): 250 CHF /sample
  • Heavy Metal Screening: 350 CHF /sample

We analyze the following elements:




Disclaimer / Sources
Contact us!

24. April 2020

Biolytix: Opening hours over 1 May - Swiss Labor Day

Our laboratories will be closed on 1. May 2020 – Labor Day. Please note the adjusted dates for your planning and logistics:

Water and food samples – Microbiology
In order to guarantee results Labor Day, we require drinking water and food samples by Monday, 27 April 2020 until 12:00 noon:

Water samples to test for drinking water hygiene:
– Samples received Monday, 27. April 2020 -> Analysis report 30. April 2020
– Samples received from Tuesday, 28. April – 30 April 2020 -> Analysis report 4. May 2020

Sampling Water – Microbiology
Water samples for testing for drinking water hygiene and legionella can be accepted in the week of the 27. April until Thursday 30th April at 15:00.

Allergen and GMO samples
Friday, 1. May 2020: no reception, analysis and processing of EXPRESS and NEXT-DAY samples

From Monday, 4 May 2020 we will be back with normal opening hours!

Thank you for your understanding and stay healthy!

-Biolytix Team

6. April 2020

Opening hours over Easter holidays 2020

Due to the Easter holidays Biolytix AG will be closed on Friday, 10 April 2020 and on Monday, 13 April 2020.

For your planning and logistics we therefore ask you to observe the following information:

Microbiology – water and food samples 
Please note that in week 15 (before Easter) we can only accept drinking water and Legionella samples until Thursday, 9 April 2020 at 16:00 for the corresponding analyses.

Microbiological results will be available for completed orders from Tuesday, April 14, 2020.

Express: Allergen food samples, as well as feed and seed samples
24-hour express: If samples are received by Wednesday, 8 April 2020, the result can be guaranteed on Thursday, 9 April 2020

8 hours super express: If samples are received by Thursday, April 9, 2020 by 11:00 a.m., the result can be guaranteed on Thursday, April 9, 2020 in the evening.

From Tuesday 14 April 2020 we will be back with normal opening hours!

Biolytix is closed on the following days:
– Friday, 10 April 2020 Good Friday
– Monday, 13 April 2020 Easter Monday

18. March 2020

Coronavirus / Covid-19 Biolytix is open and continues to analyze

Biolytix AG remains open and offers its services as usual. We do not expect any significant delays.

Contact us!

20. November 2019

Biolytix AG can detect Xylella fastidiosa and produces kits on request

Xylella in Olive tree in South italy

Xylella fastidiosa causes major damage to cultivated plants in Europe, especially in Italy, Spain and France
– Real-time PCR analysis kits for Xylella fastidiosa available on request

Witterswil, 20 November 2019 – Xylella fastidiosa, a vector-transmitted bacterial plant pathogen, is currently causing major problems in parts of Europe. Xylella fastidiosa was first detected on olive trees in southern Italy in Europe in 2013. Since then, the pathogenic bacterium has also been reported in France, Spain and Germany.

In Salento in southern Italy, the pathogenic bacterium has led to the so-called “Olive Quick-Down Syndrome” (OQDS), which results in the death of the leaves and branches of the olive tree, so that the trees can no longer produce olive plants.

“Plant pathogens such as Xylella fastidiosa can have serious effects on the economy of entire regions, especially if the disease is transmitted to important crops,” says Dr. Ralf Seyfarth, CSO of Biolytix.

The speed and presentation of symptoms on the plant depends very much on the following factors: host plant species, the level of bacterial inoculum, the subspecies involved and even the specific recombinations within the same or different subspecies as well as climatic conditions. (see Agroscope Fact Sheet (in German): Das Feuerbakterium – Xylella fastidiosa)

Thanks to our team of dedicated scientists, we are able to offer an analytical method for the detection of Xylella fastidiosa. If Xylella is suspected and you want to make sure that it is not Xylella fastidiosa – contact us!

For analytical laboratories and institutes: We also manufacture Xylella fastidiosa real-time PCR analysis kits for all common PCR devices.

Contact us!

7. December 2018

Death of Board Member Prof. Dr. Oreste Ghisalba

The management and board of directors of Biolytix have the painful duty to inform that Prof. Dr. Oreste Ghisalba, founding member of Biolytix, board member and longtime friend, unexpectedly died on 4. December 2018 at the age of 72.

The entire Biolytix team express their sincere condolences to Oreste’s wife and family.

With Oreste Ghisalba we lost a good friend and competent colleagues. His many years of experience and his network have shaped the Biolytix from the beginning and were essential for the success of the company.

The board of directors will announce Oreste’s replacement in due course.

18. October 2018

Accumulation of listeriosis cases in Switzerland

– Federal Office of Public Health informs: Unexplained accumulation of listeriosis cases
– Listeriosis is caused by the bacterium Listeria monocytogenes
– Biolytix routinely analyzes foods for Listeria monocytogenes

Witterswil, 18 October 2018 – Since mid-2018, the weekly statistics of the Swiss Federal Office of Public Health have shown an unusual increase in listeriosis cases. The bacterium Listeria monocytogenes is found almost everywhere in the environment and can lead to listeriosis in humans.

Transmission takes place through the consumption of contaminated food. Listeriosis is a rare infectious disease, but it can have severe consequences in immunocompromised individuals. In women who become infected with Listeria during pregnancy, it can also lead to infection of the child.

The sources of infection are animal foods such as meat, sausages, fish, raw milk and dairy products (e.g., soft cheeses), but also vegetable foods (e.g., precut salads or fruits).

Biolytix routinely analyzes various foods for Listeria monocytogenes and can offer qualitative and quantitative test methods.

The result is available within 3-4 days. If interested, send us your food samples using the order form attached below.

Detection of Listeria monocytogenes

real-time PCR, after enrichment acc. EN / ISO 11290-1, qualitative
Duration: 3-4 days
Analysis code: Lmo

Germ count according to EN / ISO 11290-2, quantitative
Duration: 3-4 days
Analysis code: Lmo quant

(Source in german: BAG Bulletin 42/18:

Other microorganism analyses.

2. July 2018

Biolytix AG celebrates its 20th anniversary with a new logo, new website and new projects

– Anniversary celebration in the Technology Center Witterswil with over 100 invited guests
– New logo, new website, new customer portal – were unveiled and presented at the anniversary
– Speeches by Christoph Keigel (President of the Board – Biolytix AG), Dr. Remo Ankli (Kanton Solothurn Governing Council) and Adrian Härri (Founder and CEO Biolytix AG).

Witterswil, 2 July 2018 – Biolytix AG celebrated its 20th anniversary at the Technology Center Witterswil on June 29, 2018 with a big party. The service laboratory for molecular and microbiological analyzes has made a name for itself nationally and internationally over the past two decades and was able to thank over 100 international invited guests for their trust and loyalty.

What began twenty years ago with two employees and an idea is today a company with over 20 employees. In order to reflect the innovative progress of recent years in the appearance, Biolytix unveiled their new brand at the festival in front of gathered audience.

«The new appearance of Biolytix transports the old logo into a new and digital world. It stands for the digitization and modernization of the company, “says Adrian Härri, CEO and founder of Biolytix.

At the same time, the Biolytix website was re-launched with the new brand and a new customer portal was announced for the customers. The new customer portal will be presented to selected customers for the first time in the third quarter of 2018 and should significantly facilitate and improve data transfer and communication.

Christoph Keigel, President of the Board of Biolytix AG, highlighted in his address various bright spots of the last 20 years of Biolytix and thanked the management and the employees.

Dr. Remo Ankli, Kanton Solothurn governing councilor for education and culture, was able to underline the importance of the SME role in the Swiss economy.

Media requests to:

Marco Ferraro
+41 61 725 20 70

13. June 2018

Ethoxyquin in Fish Feed

Ethoxyquin in Fisch

Ethoxyquin is a Antioxidant that delays the oxidation of lipophilic Vitamins (Carotine, Xanthophylle, Vitamin A und Vitamin E). It was widely used for the preservation of fishmeal (especially feed for fish farms). Prior to its ban as a plant protection product, ethoxyquin was also used as a post-harvest treatment against tan in apples and pears.

In June 2017 the European commission has formally suspended the authorization for the antioxidant ethoxyquin (EQ) as a feed additive with the publication of Regulation (EU) 2017/962.

Biolytix can help check the Ethoxyquin values in fish feed and fish meat. The detection limits are extremely sensitive (µg/kg = parts per billion).

Detection Limits

Ethoxyquin + Ethoxyquin-Dimer: 2 µg/kg + 5 µg/kg
BHA (Butylhydroxyanisol / E320):  10 µg/kg
BHT (Butylhydroxytoluol / E321):  10 µg/kg


Contact us today to get a quote!

24. May 2018

Arsenic found in soil of municipality of Liesberg

Arsen Analyse

According to a newspaper article in the Basellandschaftliche Zeitung, arsenic was found in the soil in the municipality of Liesberg.

The authorities warn against eating and growing vegetables in the affected areas.

“Unfortunately, it often happens that we find harmful substances in everyday life.” says CEO Adrian Härri, “We can provide certainty with our analyzes.”

We support in soil analysis. If you want to analyze your soil (for example, earth, sand, mud, ..), or even vegetables or fruits, send us 10 gram. You will receive the result in 2-5 working days. The cost is CHF 60 (excluding VAT).

Offer is valid until the end of June 2018.


Contact us today!

26. April 2018

Spring is here, time to tidy the allotment garden


Spring is here and summer is around the corner. Time to clean up the allotment garden and sow the first salad and carrots.

However, caution should be exercised when applying pesticides. In Switzerland, up to 200 tonnes of pesticides are used annually for private purposes.

“We have often measured elevated pesticide levels in regional gardens.” says CEO Adrian Härri, “Unfortunately, hobby gardeners are often unaware of how many pollutants are in their soil.”

Biolytix analyzes the vegetables and soil for pesticides and heavy metals (lead, cadmium, copper and zinc) to make sure that the hard-working vegetables can be enjoyed without worry.

(Source in German:

Contact us today!

13. April 2018

Dentalytix - Now part of Biolytix

Dentalytix - Now part of Biolytix

We are pleased to announce that on 1 April 2018 the Dentalytix business of Prochema AG, Allschwil, was handed over to Biolytix AG.

As a regional ISO17025 accredited service laboratory, Biolytix has established itself in the field of molecular and microbiology analyses in Switzerland over the last 20 years. Especially in hygiene control and monitoring, Biolytix has a lot of experience.

“Dentalytix was professionally managed and built by Prochema. We are pleased to continue the good work and expand the range of services for our customers” said Adrian Härri, CEO.

In the future, we look forward to offering hygiene monitoring in dental surgeries under the Dentalytix name. We not only offer the monitoring of surfaces and equipment hygiene, but also test the water quality and the hygiene status of the staff’s hands.

7. December 2017

"Traces of poison in organic salmon" Biolytix Quoted in Tages-Anzeiger

Adrian Härri, head of Biolytix, a company that conducts molecular biological and microbiological analyzes, repeatedly proves the poison in biofish.

“We have never had a sample that did not contain ethoxyquin,” says Härri. Anyone who thinks that the organic salmon is free of pesticides is wrong. “In fact, consumers are misled with the organic label,” says Härri.

Read full article

11. May 2017

GMO petunia on the European market!

Evira (Finnish food safety authority) has published on their web page on April 27th, 2017, that genetic engineering changes could be detected in petunia. These were petunias with orange-colored flowers which are merchandised in Finland under the trade names Pegasus Orange Morn, Pegasus Orange, Pegasus Table Orange, Potunia Plus Papaya, Go!Tunia Orange, Bonnie Orange, Sanguna Patio Salmon and Sanguna Salmon.

Biolytix AG is now able to carry out appropriate analyses for testing for GMO petunias in its ISO 17025 accredited laboratory. All it takes is 10 g of plant material. In addition to plant parts, seed can also be examined to determine whether the corresponding GMO markers are detectable. The analysis is carried out in 2-5 working days for 162 CHF. Express analyses are possible upon agreement within 24 hours or within 8 hours as a super express analysis.

Offer is valid until end of December 2017

Contact us with Questions.

14. January 2016

Bacteria: Biolytix in SRF 1 "Einstein"

Einstein Biolytix Video

On 14 January 2016 Biolytix was invited to be part of the television program Einstein as a bacteria expert. (Biolytix appearance at 04:34)

Go to the Video

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