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Thomas Chauvin

Radonova accelerates European expansion plan with German appointment

By News No Comments

Radonova Laboratories has appointed Patrik Nöteberg, an experienced radon specialist, who will be responsible for the company’s strategic growth in Germany. Like many other European countries, Germany has introduced new stringent national rules as a result of EURATOM Directive BSS 59/2013. This means that the demand for reliable, flexible and cost-effective radon measurements will increase. In addition to measuring radon in housing, the German market will now have a major focus on workplace measurements.

Except for the mining industry, awareness of the health implications of radon exposure has been relatively low in Germany. However, due to Germany’s large population about 1,900 civilians are estimated to die from radon-related lung cancer each year. Across Europe, Radonova is committed to ensuring that the general public fully understands the implications of radon levels in both their homes and workplaces.

Process, service and quality are crucial in eradicating radon

“Geographically, it’s typically in the southern and eastern parts of the country that ground radon is a problem. With new laws and regulations, the demand for professional consultants who can provide expert measurement and analysis will increase. I am delighted to join a company that is at the forefront of radon measurement technologies. In addition to technical innovation, Radonova excels in terms of standards, processes and support, providing a comprehensive solution to customers. These are crucial factors when you look to approach a large and technically mature market such as Germany”, comments Patrik Nöteberg.

“Being raised and educated in Germany, Patrik has crucial local knowledge which is essential as we continue to establish our service in the German market. We already have a presence, but with Patrik onboard our expansion plans will speed up. Patrik’s knowledge of the German culture and sales process are vital as we continue to expand our presence across Europe”, comments Karl Nilsson, CEO of Radonova Laboratories.

Patrik Nöteberg holds a master’s degree in physics (measurement technology) and has vast experience in international technical sales and support. In addition to Germany, Patrik will also be responsible for Radonova’s growth in Switzerland and Austria.

What is radon?

Radon is a radioactive gas that leaks from the ground and in some cases comes from building materials. Depending on the ground beneath the house and the type of building construction, harmful high concentrations of radon can occur. Radon is a health risk that, after smoking, is the most common cause of lung cancer.

Globally, an estimated 230 000 people are affected by lung cancer each year as a result of long-term exposure to radon. According to the World Health Organization (WHO) 3% – 14% of all lung cancer cases are caused by radon depending on where you live. WHO recommends a limit value for radon content of 100 Bq/m³.

About Radonova

Radonova is the laboratory of choice for numerous government radon surveys, as well as other public and private sector large scale measurement contracts around the world. A truly global laboratory, Radonova is active in over 50 countries and has performed millions of measurements.

For more information about radon and radon measurement visit www.radonovalaboratories.com

For more information, contact Karl Nilsson, CEO Radonova Laboratories AB
Phone: 070-639 01 31, Email: karl.nilsson@radonova.com

Patrik Nöteberg

Seasonal Peak for the Radonova Instrument Workshop

By Measurement No Comments

The season for measuring ground radon is nearly upon us. This coincides with there being a sharp increase in the global demand for reliable radon instruments. For Fredrik Lindén and his colleagues at Radonova’s radon instrument production department, this equates to long days to fulfil customer requests.

”When assembling radon instruments we use state-of-the-art technology, but there is still a requirement for experience and craftsmanship. Our quality standards are very high, and every instrument that is manufactured here is tested for reliability to ensure it is field ready”, comments Fredrik Lindén.

Focus on timely, fast delivery

“To meet market demand, we are currently focusing on producing high volumes of MARKUS 10 – a portable, battery-powered instrument. We pride ourselves on our ability to deliver quickly, therefore we have to stay one step ahead of orders to ensure our stock is always able to accommodate future sales. Every instrument consists of numerous components, which means we have a very close relationship with our suppliers to ensure that all deadlines are met. Parts used to create our instruments are as important as each other, therefore high standards are expected throughout the supply chain”, continues Fredrik Lindén.

Robustness and ease of use

“For a product to be successful it needs to be robust, user-friendly and thoroughly tested – these are critical manufacturing factors for us. MARKUS 10 is a very good example. As you would expect, customers demand a reliable instrument and we always strive to exceed those expectations. Prior to each final assembly, we test all components based on our own high internal standards”, concludes Fredrik Lindén.

MARKUS 10 – an overview

Ground radon is the most common cause of elevated radon levels. MARKUS 10 is a precision instrument that measures high radon concentrations. It is portable and battery-powered. Attach the MARKUS 10 and hollow measurement probe to the ground and simply press a button to start measuring. Air is pumped through the probe tube into a chamber that detects radon daughters (fine solid particles which result from the radioactive decay of radon gas). Following the pumping phase, the measurement phase commences. The result is presented in the display after 12 minutes.

Seasonal Peak for the Radonova Instrument Workshop

Radonova’s Tryggve Rönnqvist honoured by the ERA

By News No Comments

At this year’s European Radon Week, Radonova’s radon specialist Tryggve Rönnqvist received the prestigious European Radon Association award. Tryggve was given the award for his many years of work and expertise in the field of radon awareness and research, as well as his involvement in the development of new innovative radon measurement solutions.

With an overwhelming majority of the votes, Tryggve Rönnqvist was awarded the prize over three other nominees, each a radon expert. In addition to his knowledge and experience, Tryggve’s availability and willingness to help industry colleagues with radon-related issues was also taken into account.

“The ERA is a key industry organization, that has great influence on research, knowledge sharing and developing and introducing common methods and standards in radon measurement. Of course, I am delighted to receive this award from my industry peers. My entire professional life has been focussed on radon-related research and studies. I am therefore very proud to be acknowledged and thank the ERA members for their support. The prize is also a reminder that the fight against the harmful effects of radon is an international concern and we all must work together”, says Tryggve Rönnqvist.

The European Radon Week was held in Vienna on February 24-28. The conference presented a series of research projects and showcased new solutions. Radonova presented on the challenges it faced and lessons learnt in communicating the risk of radon in Sweden.

Tryggve Rönnqvist works as CTO at Radonova Laboratories.

For more information about ERA visit www.radoneurope.org

For more information about radon and radon measurement visit www.radonova.co.uk

Radonova's Tryggve Rönnqvist honoured by the ERA

Is radon only in basements?

By Home, Measurement No Comments

Radon is completely odorless as well as being invisible. Because it is often found unexpectedly in basements, some people mistakenly believe that it only occurs in basements. This is a dangerous assumption that may damage your ability to protect your home if you are not careful.

Most commonly homes with basements are suspect for having higher radon levels. The fact that porous foundation walls allow radon gas to enter a home is no secret and with most basements containing a sump well, there are many access points from which radon can enter a home.

However, homes above a crawl space suffer the same fate. Whether your crawl space is a dirt crawl (unfinished), poured concrete (finished), or even lined with a protective barrier, radon can still enter your home. Additionally, with its closer proximity to the ground, the living areas of the home may be more susceptible to radon as it does not have the same amount of time to decay in a full basement prior to entering living areas.

Not to be forgotten, homes built on a slab are also at risk for high radon levels. As a matter of fact, homes built on a slab to not have the ‘buffer’ of a basement or crawl space to absorb and dissipate radon gas before it enters the living area of a home.

There is truly no single style of home that is not prone to radon gas and potentially highly dangerous levels.

What about new homes built with radon-resistant construction techniques?

As early as 1990 some homes have been built using radon-resistant materials and with pre-piped radon mitigation systems installed. Clean gravel “airflow layers”, vapor barriers, additional polyurethane caulking, and vent pipes are all widely used. However, as the name states, these techniques are radon ‘“resistant” and cannot fully remove the risk of a high radon level. Testing should still be performed to determine a homes radon level and in instances when a high radon level is present, some of the installed vent pipes used for passive radon reduction can easily be converted to an active system by a professional radon mitigation specialist.

Other sources of radon

If you have certain building materials in your home, then you need to worry about radon sources other than just below your home. In general, naturally occurring stone, rock and brick building materials always contain some Uranium that decays into Radon… These types of stone typically used for countertops and/or fireplace mantels may be a potential source of radon in your home. In most cases, the amount of radon immediate here is not a huge problem, but you need to know for sure.

In general, detection is your number one weapon against radon exposure. Make sure that you test your home regularly. This is the only ways that you will be able to protect yourself against the detrimental effects of radon in your home.

More informations about radon here.

Is radon only in basements

Radonova strengthens support team to meet increased customer demand

By News No Comments

The global demand for reliable radon technology and measurements is increasingThis has led to Radonova strengthening its support team with the appointment of Erica Hall who joined the company in 2019. Here, Erica tells us about her role, the Radonova work environment and how her new job is helping her to develop new customer facing skills. 

Tell us a little about your background…

I have a pretty mixed background in terms of education and work experience. In terms of academia, I focused on hotels, tourism, finance and administration. In terms of work, I have, among other things, run my own business, been a store manager and worked with order administration. Today, it feels like an advantage to have a broad background and extensive experience of working with people. Providing a high level of service has been expected no matter where I have worked. That philosophy and determination to help customers has served me well in my new role at Radonova. 

What attracted you to Radonova?

It felt like a company with a great vision and a business that is basically about improving human health. My first impression was that it was a workplace where you can grow as an individual, and over the subsequent months I have been proved rightYou are given a lot of freedom and responsibility. If you want to develop and move on to new roles, there are plenty of opportunities. 

How do you view support work?

I really enjoy customer contact and ensuring that all who request help are completely satisfied. Many customers have limited experience in regard to radon measurements, therefore we need to make it as simple as possible to conduct a measurement, regardless of how much experience the customer may have. 

In what way is the work stimulating?

Frequently my contacts are repeat customers. This helps in building a more personal relationship. At the same time, the job does vary a great deal. You never know what can happen from day to day, sometimes there’s a huge volume of  incoming calls many of which need to be resolved quickly. As a person, I thrive when there are a number of tasks which need to be completed to a specific deadline. I also manage the administrative process in regard to our measuring instruments. In summary, my job is varied and offers a good mix of different activities. 

Is there anything that you have found particularly challenging?

Naturally learning a whole new sector creates its own challenges. It´s an ongoing process, but I learn something new every day and have the benefit of attending training courses which helps me to manage situations which I may not have come across before. Radon measurement is about precision and is fact-intensive, which enables me to learn new things every dayHaving said that, facts can only take you so far. If you work in support you have to enjoy working with people and in regard to that I think my broad background and experience comes into its own and enables me to offer a support service that customers appreciate. 

What is Radonova like as a workplace?

We are a broad mix of people in terms of age, background, knowledge and interests. It’s been easy to become part of the Radonova community and it feels like I’ve been here longer than I have. As a newcomer you benefit from the knowledge and experience of those around youThere’s a team philosophy at Radonova which is important if youre doing a role which you’re not familiar withHowever, you quickly get a perspective on how the company operates in terms of flow and processes. This is important as my support role demands that I am able to give direct answers to a wide range of customer queries.

Erica Hall

Record levels of interest in European Radon Week 2020

By News No Comments

Interest in “European Radon Week” has surpassed all previous levels, making it one of the standout dates in the calendar for national authorities, the scientific radon community, industry and all other experts interested in radon. The conferenceheld in Vienna from 24-28 Februaryhas been sold out for many months. The event is supported by the European Radon Association (ERA), the European Commission and Europe’s largest radon project, MetroRADON. 

This year’s program includes presentations on research conducted by MetroRADON – a project funded by the European Metrology Programme for Innovation and Research (EMPIR)Attendees will also be provided with an update on the new EURATOM BSS directive and how it is progressing in individual European countries. 

– The Vienna conference is without doubt one of the most important events this year. This is where European researchers, authorities and companies gather to exchange experiences and share knowledge. The conference is also important as it enables various stakeholders to identify which areas require further research and study. The event is renowned for developing and introducing common methods and standards in radon measurement, comments Radonova’s José-Luis Gutiérrez Villanueva, secretary of the ERA. 

– As the world’s leading radon laboratory, Radonova will continue to play an active role in any international research which highlights the dangers of radon exposure. By sharing our knowledge and experience which we gather from various countries, we are able to contribute important data and research which ensures that measurement techniques and analysis of radon remains at a very high standard, says Karl Nilsson, CEO of Radonova Laboratories. 

The conference will present a number of research projects and new solutions aimed at reducing the harmful effects of radon. In addition, Radonova will present on the challenges it faced and lessons learnt in communicating the risk of radon in Sweden.
 

More information about European Radon Week 2020 can be found here»
http://radoneurope.org/index.php/european-radon-week-2020/ 

For more information about radon and radon measurement visit www.radonova.co.uk 

Record levels of interest in European Radon Week 2020

Radonova receives excellent results from PHE for validation test

By News No Comments

Radonova Laboratories has received exceptional results in a radon measurement validation test carried out by Public Health England (PHE) – an executive agency of the Department of Health and Social Care in the UKThe latest test follows on from a comparative test conducted by PHE in May last year where again Radonova achieved industry leading resultsPHE’s comparative reference tests are widely recognised as being one of the most demanding in the industry. 

PHE’s validation test indicates that Radonova has minor deviations from the respective reference value. In the test, Radonova deviated by less than 4.7 per cent from the respective reference value in all five cases.  

For the validation test, radon detectors were exposed to different levels of radon. They were then compared to the official reference values as ​​specified by PHE.

”The results from the two recent tests are an endorsement of our technology and the research we undertake to constant improve our market proposition. PHE consistently places very stringent demands on both reliability and function. It is particularly gratifying that a highly regarded independent party, for the second time in less than a year, has confirmed that our radon boxes and measurement methodologies maintain a high and consistent standard”, said Tryggve Rönnqvist, radon specialist at Radonova Laboratories.

In the test, the radon boxes were subjected to the range exposure of 177 – 2526 kBqh/m³. 

Why measure for radon?

Every year around 230,000 people die of lung cancer caused by radon exposure. Radon gas is part of the element of the uranium decay chain and since uranium is found in many places in the earth’s crust, radon is found almost everywhere. High levels of radon can be found in regions which have a large concentration of rock or have a cool climate. The latter is due to the fact that radon gas levels are usually high in insulated houses that are heated. To be fully aware of radon levels, homeowners should always measure. 

Most countries in the world require measurements that provide an annual mean, which usually entails a measurement period of over three months. 

Radonova receives excellent results from PHE for validation test

Expert Interview with David Lenden, Director of RPmatters in the UK

By News No Comments

In this Expert Interview we talk to David Lenden, Director of RPmatters – a UK business dedicated to providing radiation protection advice and support across the UK. During our conversation, David discusses the current state and potential evolution of the radon measurement market in the UK and his longstanding relationship with Radonova.

Can you give me some background on your company and what it does?

We are a small business based in the South West of the UK (specifically Plymouth) that has been operating for over ten years. We provide general radiation protection advice and support across numerous sectors; including, but not limited to, Radon measurement. As an accredited Radiation Protection Advisor and Chartered Radiation Protection Professional I can, and do, provide advice and support to individuals, housing associations, companies and schools etc. for compliance with legislation relating to ionising radiations; this includes Radon. Although this is not unique, we do provide a service that has been identified by our clients as much more approachable, pragmatic and comprehensive than others. A company supplying detectors doesn’t usually have an RPA, the legal appointed professional, required to comply with UK occupational regulations above 300 Bq/m3.

Are you affiliated to any radon associations?

Yes, we are. We are members of the European Radon Association, the UK Radon Association (I actually sit on the UKRA board), are associated with COIRA (Coalition of International Radon Associations) and member & affiliated to the Society for Radiological Protection. Each of these associations are working to improve Radon awareness and increase the number of measurements and mitigation.

What is the current state of the radon measurement market in the UK?

Generally, I would say it is buoyant. Without being disrespectful to others, the UK is doing more than some other countries, but at the same time we have a long way to go. The potential market is significant.

How do you foresee the market changing over the next few years?

It is difficult to say. The Health and Safety Executive (HSE) have reconfirmed that the legislation relating to Radon exposure is applicable for all employers; even plumbers and electricians in Radon Affected Areas! But I remember a HSE inspector at a conference in 2007 stating that about 95% of employers in Radon Affected Areas are unaware that radon could cause a risk in the workplace. I am not sure this percentage has improved at all but if you add in how unaware employers with work locations below/partially below ground ANYWHERE in the UK are of the need to measure, I don’t think the percentage would have gone down at all.

There used to be twelve radiation protection specialist HSE inspectors – I believe there’s now three. One point I’d like to make is the toing and froing between the HSE and Public Health England (PHE). The HSE stance is that radon is a public health issue, where as PHE view radon as a health and safety issue. Once a department takes responsibility, we are more likely to see quicker progress.

In my opinion IF the HSE can be appropriately funded to enforce the requirements of a simple Radon risk assessment, then measurement in the workplace would dramatically increase. Domestic measurements are an even more difficult market to develop but which MUST be managed. Simple measurement with straightforward and low-cost mitigation can save lives. The Only Way to Know is to Measure.

Without the above it shall remain a slow but increasing market.

How did you start working with Radonova?

That takes me back before I started the business. I was working for a multinational company supporting Radon measurements in a housing stock of 49,000 homes about 15 years ago. In fact RPmatters are still working with that client. I was looking for a validated laboratory to provide large quantities of etch track detectors for three-month measurements. Radonova had the capabilities we needed. In addition to being UK validated, large quantities of detectors can be processed and reported upon promptly. The fact that they are also an ISO 17025 accredited laboratory meant they are a much valued Service not just a provider of plastic. When detectors are purchased a whole team of people work behind the scenes to ensure that it is not just a number on a page you get back.

What is your relationship with Radonova on a day to day basis?

We provide the point of contact for all Radonova products supplied to companies or individuals in the UK; whether supplied by ourselves, directly from Radonova or by secondary sellers. Fortunately the people at Radonova are very approachable, knowledgeable and helpful so sorting problems tends to be relatively easy. Customers having the ability to enter their data directly onto the server is great but the number of people who lose the paperwork (specifically login details) means we do contact them almost daily. It’s great to be viewed as part of the team; even more so when most are Liverpool fans!

Are there any Radonova technologies that are particularly relevant to the UK market?

I think there are three that deserve a mention. The principle technology we use on a daily basis is Radtrak2. Secondly, combining Radtrak2 with the online server access (Radonline) makes a formidable service.

But the device that I am most enthusiastic about is the Duotrak. In its current mode it is an excellent exposure meter being able to provide a result for workplace exposure during occupation.

A variation of the system, Ecotrak, can measure Radon levels in soil resulting in estimation of Radon potential in new build properties. A much better process than that described to me by a local Site Manager of a 1,200-acre new build site where we were looking to purchase a house. He described putting one etch track detector at the end of the site on the ground surface under a bucket for three months and when the result came back he stated that “there is no Radon”; so they didn’t install any protective measures! We didn’t buy a house there…

Any closing thoughts?

Thinking about these questions has meant I had to summarise, in my mind, nearly 40 years of Radon protection into a few points of (potential) interest. And the one point that I keep coming back to is getting people to take simple and inexpensive actions to save lives.

The final thought is how America have, recently, increased Radon measurements being made in the home by targeting pet owners. It would seem people are more willing to spend a small amount of money to protect their pets than themselves!

David Lenden

David Lenden during last meeting in Uppsala.

From left to right : Tryggve Rönnqvist, technical manager at Radonova – David Lenden, Director of RPmatters – José-Luis Gutierrez, Specialist Radon Measurement Advisor at Radonova and Oscar Wännerud, laboraty Manager at Radonova

Six steps for a radon free environment.

By Measurement, Workplace No Comments

Since 1974 the Health and Safety at Work Act has required employers to take responsibility for the safety of employees and the public in the UK. The Management of Health and Safety at Work Act were implemented to reinforce the HS@WA. The legislation requires risk assessments to identify significant risks in the workplace (including employees working from home) and carry out actions to minimise those risks.

Radon is a potentially significant risk to health in numerous areas across the UK and in all below ground work spaces. The Ionising Radiations Regulations 2017 (IRR17) requires radiation risk assessments to be carried out .
Radonova has designed the following step-by-step guide to correctly perform Radon screening, to be legislative compliant and ultimately ensure a healthy working environment.

Step 1 – Long-term radon measurement

The radon monitoring process is very simple and inexpensive. The measurement consists in carrying out a survey over 3-month period (preferably in the winter period), in accordance with the Public Health England (PHE) validation scheme . Radon monitoring should avoid times when the building will be unoccupied for extended periods, e.g. school summer holidays.
It is also preferable to use an accredited as well as validated laboratory; such as Radonova.
If the result of the measurement indicates a radon concentration less than the action level for workplaces, 300 Bq m-3 (IRR17), no immediate action is necessary. The Health and Safety Executive (HSE) recommend subsequent measurement to be completed after 10 years or after structural changes .

Step 2 – Occupational Action Level

If the result of the measurement is at or greater than 300 Bq m-3 the IRR17 are applicable . These regulations place responsibilities upon the employer that include taking action to reduce radon levels or manage exposures. You must also notify HSE of these results if the result is greater than 1000 Bq/m3. You can perform a radon measurement during working hours, to check the actual radon exposure of your employees before implementing the remedial actions. Indeed, radon concentrations vary during the day. Therefore, it is possible that the annual average, calculated in step 1, does not reflect the actual radon exposure during working hours. Contact us to define the method that will be most suitable for you. Click here to learn more about targeted measurements.

Step 3 – Inspection and Measurements

If results greater than 300 Bq m-3 (IRR17 are applicable) are measured, it means that radon exposure can be a hazard for your employees. It is then necessary to set up actions to reduce radon levels. Those actions can be simple or require the help of a radon consultant. In cases where the results are greater than 1000 Bq m-3, it will be necessary to find the right solutions to effectively reduce radon levels as soon as possible and inform the HSE.

Step 4 – Follow-up Action

Once remediation measures are in place, it shall be necessary to monitor their effectiveness. Radonova advises to perform a long-term measurement under similar conditions to those in step 1, following the annual maintenance.

Step 5 – Personal Dosimetry

It may be physically impossible or unrealistic to lower radon levels below the action level. In such cases, it is necessary to evaluate the dose due to radon exposure employees may receive. Personal dosimetry will help to the employer to make decisions regarding maximum time an employee can stay in the area with high radon levels. A Radiation Protection Advisor shall be appointed to support dose minimization and measurement.

Step 6 – Healthy Environment

The health risk of radon is well established. Radon is the second leading cause of lung cancer after smoking. It is essential to measure radon wherever you are and to repeat, even the measurements, at least every 10 years and after each structural modification in the building.
The general principle to apply when working with reducing radon levels should be the ALARP principle (As Low As Reasonably Practicable) reducing radon to as low as possible has the greatest potential to minimize risk. But “practical” includes an awareness of costs.
It is also best practice to offer the workforce the option to measure at home. This is a requirement of the employer if they allow the employee to work from home . Mitigation at home is the responsibility of the home owner.

Six steps to a radon-free environment in the workplace. A guide to check the radon content. Order radon measurement.

Radonova launches ROBIN2 – a professional radon sensor with high sensitivity

By Measurement, News No Comments

Radonova Laboratories has launched ROBIN2, broadening its range of radon measurement technologies. The latest version of ROBIN is twice as sensitive as its predecessor and includes an improved response function for optimum compliance with rapid changes in radon levels.

ROBIN2 is a state-of-the-art radon sensor that can be deployed as a fixed installation in smart homes for monitoring and reducing radon levels. It can be mounted in all types of ventilation control units where there is a requirement to monitor radon levels. It can be easily connected to a controller, central unit, data logger, fan control system or PLC and is available in various formats.

The new response function improves measurement accuracy as radon levels fluctuate. This is due to its improved sensitivity, which reduces error at lower levels, otherwise it is limited by deteriorating statistics due to the pulse rate being too low. ROBIN2 has a new motherboard that is more insulated and weather resistant. ROBIN2 is available as a standard or industrial version which can be used for mining. The mining version has enhanced protection against dust and moisture and is optimized for underground measurements.

– I’m delighted that Radonova has enhanced the capabilities of ROBIN, which was the first radon sensor of its kind when it was first launched in 2016. ROBIN2 is without doubt a market-leading detector, due to its new response function and overall stability, said Dag Sedin, a senior advisor at Radonova, who was integral to ROBIN’s initial launch.

ROBIN2 is available now.

About ROBIN2

ROBIN2 measures the radon content of air in Bq/m³ and gives an analog output signal of 1-10V, proportional to the concentration of radon in the air. Compared to its predecessor, ROBIN2 has improved sensitivity and a larger and more efficient measuring chamber. The output signal is also more stable and more consistent with the real radon content variation. If required, the measurement range can be defined by the customer. The radon sensor is protected against electromagnetic interference and can be connected to a thyristor controller. The transducer is mountable without directional dependence and can be permanently installed in a room, ventilation shaft or air handling unit. The mining version has enhanced moisture protection and is built for an underground environment.

Additional features:
• Can measure accurately in both laminar and turbulent airflow
• High sensitivity to provide good time resolution
• Great flexibility and can be customized for OEM

For more information on ROBIN2 visit our dedicated website
For more information about radon and radon measurement visit our website

ROBIN2