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«Analyze This»: 2020 in review

«Analyze This»: 2020 in review

I wanted to end 2020 by thanking all of you for making «Analyze This» – the Metrohm blog for chemists such a success! For our 60th blog post, I’d like to look back and focus on the wealth of interesting topics we have published this year. There is truly something for everyone: it doesn’t matter whether your lab focuses on titration or spectroscopic techniques, or analyzes water samples or illicit substances – we’ve got you covered! If you’re looking to answer your most burning chemical analysis questions, we have FAQs and other series full of advice from the experts. Or if you’re just in the mood to learn something new in a few minutes, there are several posts about the chemical world to discover.

We love to hear back from you as well. Leaving comments on your favorite blog posts or contacting us through social media are great ways to voice your opinion—we at Metrohm are here for you!

Finally, I wish you and your families a safe, restful holiday season. «Analyze This» will return on January 11, 2021, so subscribe if you haven’t already done so, and bookmark this page for an overview of all of our articles grouped by topic!

Stay healthy, and stay curious.

Best wishes,

Dr. Alyson Lanciki, Scientific Editor, Metrohm AG

Quickly jump directly to any section by clicking a topic:

Customer Stories

We are curious by nature, and enjoy hearing about the variety of projects where our products are being used! For some examples of interesting situations where Metrohm analytical equipment is utilized, read on.

From underwater archaeological research to orbiting Earth on the International Space Station, Metrohm is there! We assist on all types of projects, like brewing top quality beers and even growing antibiotic-free shrimp – right here in Switzerland.

Interested in being featured? Contact your local Metrohm dealer for details!

Titration

Metrohm is the global market leader in analytical instruments for titration. Who else is better then to advise you in this area? Our experts are eager to share their knowledge with you, and show this with the abundance of topics they have contributed this year to our blog.

For more in-depth information about obtaining the most accurate pH measurements, take a look at our FAQ about pH calibration or read about avoiding the most common mistakes in pH measurement. You may pick up a few tips!

Choose the best electrode for your needs and keep it in top condition with our best practices, and then learn how to standardize titrant properly. Better understand what to consider during back-titration, check out thermometric titration and its advantages and applications, or read about the most common challenges and how to overcome them when carrying out complexometric titrations

If you are interested in improving your conductivity measurements, measuring dissolved oxygen, or the determination of oxidation in edible fats and oils, check out these blog posts and download our free Application Notes and White Papers!

Finally, this article about comprehensive water analysis with a combination of titration and ion chromatography explains the many benefits for laboratories with large sample loads. The history behind the TitrIC analysis system used for these studies can be found in a separate blog post.

Karl Fischer Titration

Metrohm and Karl Fischer titration: a long history of success. Looking back on more than half a century of experience in KFT, Metrohm has shaped what coulometric and volumetric water analysis are today.

Aside from the other titration blog posts, our experts have also written a 2-part series including 20 of the most frequently asked questions for KFT arranged into three categories: instrument preparation and handling, titration troubleshooting, and the oven technique. Our article about how to properly standardize Karl Fischer titrant will take you step by step through the process to obtain correct results.

For more specific questions, read about the oven method for sample preparation, or which is the best technique to choose when measuring moisture in certain situations: Karl Fischer titration, near-infrared spectroscopy, or both?

Ion Chromatography (IC)

Ion chromatography has been a part of the Metrohm portfolio since the late 1980s. From routine IC analysis to research and development, and from stand-alone analyzers to fully automated systems, Metrohm has provided IC solutions for all situations. If you’re curious about the backstory of R&D, check out the ongoing series about the history of IC at Metrohm.

Metrohm IC user sitting at a laboratory bench.

Common questions for users are answered in blog posts about IC column tips and tricks and Metrohm inline ultrafiltration. Clear calculations showing how to increase productivity and profitability in environmental analysis with IC perfectly complement our article about comprehensive water analysis using IC and titration together for faster sample throughput.

On the topic of foods and beverages, you can find out how to determine total sulfite faster and easier than ever, measure herbicides in drinking water, or even learn how Metrohm IC is used in Switzerland to grow shrimp!

Near-Infrared Spectroscopy (NIRS)

Metrohm NIRS analyzers for the lab and for process analysis enable you to perform routine analysis quickly and with confidence – without requiring sample preparation or additional reagents and yielding results in less than a minute. Combining visible (Vis) and near-infrared (NIR) spectroscopy, these analyzers are capable of performing qualitative analysis of various materials and quantitative analysis of a number of physical and chemical parameters in one run.

Our experts have written all about the benefits of NIR spectroscopy in a 4-part series, which includes an explanation of the advantages of NIRS over conventional wet chemical analysis methods, differences between NIR and IR spectroscopy, how to implement NIRS in your laboratory workflow, and examples of how pre-calibrations make implementation even quicker.

A comparison between NIRS and the Karl Fischer titration method for moisture analysis is made in a dedicated article.

A 2-part FAQ about NIRS has also been written in a collaboration between our laboratory and process analysis colleagues, covering all kinds of questions related to both worlds.

Raman Spectroscopy

This latest addition to the Metrohm family expands the Metrohm portfolio to include novel, portable instruments for materials identification and verification. We offer both Metrohm Raman as well as B&W Tek products to cover a variety of needs and requirements.

Here you can find out some of the history of Raman spectroscopy including the origin story behind Mira, the handheld Raman instrument from Metrohm Raman. For a real-world situation involving methamphetamine identification by law enforcement and first responders, read about Mira DS in action – detecting drugs safely in the field.

Mira - handheld Raman keeping you safe in hazardous situations.

Are you looking for an easier way to detect food fraud? Our article about Misa describes its detection capabilities and provides several free Application Notes for download.

Process Analytics

We cater to both: the laboratory and the production floor. The techniques and methods for laboratory analysis are also available for automated in-process analysis with the Metrohm Process Analytics brand of industrial process analyzers.

Learn about how Metrohm became pioneers in the process world—developing the world’s first online wet chemistry process analyzer, and find out how Metrohm’s modular IC expertise has been used to push the limits in the industrial process optimization.

Additionally, a 2-part FAQ has been written about near-infrared spectroscopy by both laboratory and process analysis experts, which is helpful when starting out or even if you’re an advanced user.

Finally, we offer a 3-part series about the advantages of process analytical technology (PAT) covering the topics of process automation advantages, digital networking of production plants, and error and risk minimization in process analysis.

Voltammetry (VA)

Voltammetry is an electrochemical method for the determination of trace and ultratrace concentrations of heavy metals and other electrochemically active substances. Both benchtop and portable options are available with a variety of electrodes to choose from, allowing analysis in any situation.

A 5-part series about solid-state electrodes covers a range of new sensors suitable for the determination of «heavy metals» using voltammetric methods. This series offers information and example applications for the Bi drop electrode, scTrace Gold electrode (as well as a modified version), screen-printed electrodes, and the glassy carbon rotating disc electrode.

Come underwater with Metrohm and Hublot in our blog post as they try to find the missing pieces of the ancient Antikythera Mechanism in Greece with voltammetry.

If you’d like to learn about the combination of voltammetry with ion chromatography and the expanded application capabilities, take a look at our article about combined analysis techniques.

Electrochemistry (EC)

Electrochemistry plays an important role in groundbreaking technologies such as battery research, fuel cells, and photovoltaics. Metrohm’s electrochemistry portfolio covers everything from potentiostats/galvanostats to accessories and software.

Our two subsidiaries specializing in electrochemistry, Metrohm Autolab (Utrecht, Netherlands) and Metrohm DropSens (Asturias, Spain) develop and produce a comprehensive portfolio of electrochemistry equipment.

This year, the COVID-19 pandemic has been at the top of the news, and with it came the discussion of testing – how reliable or accurate was the data? In our blog post about virus detection with screen-printed electrodes, we explain the differences between different testing methods and their drawbacks, the many benefits of electrochemical testing methods, and provide a free informative White Paper for interested laboratories involved in this research.

Our electrochemistry instruments have also gone to the International Space Station as part of a research project to more efficiently recycle water on board spacecraft for long-term missions.

The History of…

Stories inspire people, illuminating the origins of theories, concepts, and technologies that we may have become to take for granted. Metrohm aims to inspire chemists—young and old—to be the best and never stop learning. Here, you can find our blog posts that tell the stories behind the scenes, including the Metrohm founder Bertold Suhner.

Bertold Suhner, founder of Metrohm.

For more history behind the research and development behind Metrohm products, take a look at our series about the history of IC at Metrohm, or read about how Mira became mobile. If you are more interested in process analysis, then check out the story about the world’s first process analyzer, built by Metrohm Process Analytics.

Need something lighter? Then the 4-part history of chemistry series may be just what you’re looking for.

Specialty Topics

Some articles do not fit neatly into the same groups as the rest, but are nonetheless filled with informative content! Here you can find an overview of Metrohm’s free webinars, grouped by measurement technique.

If you work in a regulated industry such as pharmaceutical manufacturing or food and beverage production, don’t miss our introduction to Analytical Instrument Qualification and what it can mean for consumer safety!

Industry-focused

Finally, if you are more interested in reading articles related to the industry you work in, here are some compilations of our blog posts in various areas including pharmaceutical, illicit substances, food and beverages, and of course water analysis. More applications and information can be found on our website.

Food and beverages
All of these products can be measured for total sulfite content.

Oxidation stability is an estimate of how quickly a fat or oil will become rancid. It is a standard parameter of quality control in the production of oils and fats in the food industry or for the incoming goods inspection in processing facilities. To learn more about how to determine if your edible oils are rancid, read our blog post.

Determining total sulfite in foods and beverages has never been faster or easier than with our IC method. Read on about how to perform this notoriously frustrating analysis and get more details in our free LC/GC The Column article available for download within.

Measuring the true sodium content in foodstuff directly and inexpensively is possible using thermometric titration, which is discussed in more detail here. To find out the best way to determine moisture content in foods, our experts have written a blog post about the differences between Karl Fischer titration and near-infrared spectroscopy methods.

To determine if foods, beverages, spices, and more are adulterated, you no longer have to wait for the lab. With Misa, it is possible to measure a variety of illicit substances in complex matrices within minutes, even on the go.

All of these products can be measured for total sulfite content.

Making high quality products is a subject we are passionate about. This article discusses improving beer brewing practices and focuses on the tailor-made system built for Feldschlösschen, Switzerland’s largest brewer.

Pharmaceutical / healthcare

Like the food sector, pharmaceutical manufacturing is a very tightly regulated industry. Consumer health is on the line if quality drops.

Ensuring that the analytical instruments used in the production processes are professionally qualified is a must, especially when auditors come knocking. Find out more about this step in our blog post about Analytical Instrument Qualification (AIQ).

Moisture content in the excipients, active ingredients, and in the final product is imperative to measure. This can be accomplished with different analytical methods, which we compare and contrast for you here.

The topic of virus detection has been on the minds of everyone this year. In this blog post, we discuss virus detection based on screen-printed electrodes, which are a more cost-effective and customizable option compared to other conventional techniques.

Water analysis

Water is our business. From trace analysis up to high concentration determinations, Metrohm has you covered with a variety of analytical measurement techniques and methods developed by the experts.

Learn how to increase productivity and profitability in environmental analysis laboratories with IC with a real life example and cost calculations, or read about how one of our customers in Switzerland uses automated Metrohm IC to monitor the water quality in shrimp breeding pools.

If heavy metal analysis is what you are interested in, then you may find our 5-part series about trace analysis with solid-state electrodes very handy.

Unwanted substances may find their way into our water supply through agricultural practices. Find out an easier way to determine herbicides in drinking water here!

Water is arguably one of the most important ingredients in the brewing process. Determination of major anions and cations along with other parameters such as alkalinity are described in our blog post celebrating International Beer Day.

All of these products can be measured for total sulfite content.
Illicit / harmful substances

When you are unsure if your expensive spices are real or just a colored powder, if your dairy products have been adulterated with melamine, or fruits and vegetables were sprayed with illegal pesticides, it’s time to test for food fraud. Read our blog post about simple, fast determination of illicit substances in foods and beverages for more information.

Detection of drugs, explosives, and other illegal substances can be performed safely by law enforcement officers and first responders without the need for a lab or chemicals with Mira DS. Here you can read about a real life training to identify a methamphetamine laboratory.

Drinking water regulations are put in place by authorities out of concern for our health. Herbicides are important to measure in our drinking water as they have been found to be carcinogenic in many instances.

Post written by Dr. Alyson Lanciki, Scientific Editor at Metrohm International Headquarters, Herisau, Switzerland.

How Mira Became Mobile

How Mira Became Mobile

Handheld Raman spectrometers are truly like no other analytical chemical instruments. All spectrometers (e.g. IR/NIR, UV-Vis, GC/MS, and Raman) rely on interactions between matter and energy and include detectors that collect information about resulting atomic and molecular changes. This information is used to qualify and/or quantify various chemical species. Typically, a spectrometer is a benchtop instrument attached to a computer or other visual display that is used by an analytical chemist in a laboratory.

Classical Raman spectrometers fall into this category. Lasers, filters, detectors, and all associated hardware for sampling is combined in one unit, while data processing and viewing occurs nearby.

For a comparison of other spectroscopic techniques, visit our previous blog post «Infrared spectroscopy and near infrared spectroscopy – is there a difference?».

Raman is a unique investigative analytical technique in many ways. It is said, «If you can see it, Raman can ID it.»

Indeed, Raman’s strengths are its simple sampling methods combined with its specificity. Direct analysis is possible for many pure substances without sample preparation. Sampling is performed via direct contact with a substance, remotely, or through a barrier. Even solutes in water may be directly identified. This technique is highly specific; each material investigated with Raman produces a unique «fingerprint» spectrum. Raman spectroscopy is successful at positively identifying each distinct substance, while accurately rejecting even very similar compounds.

Mira (Metrohm Instant Raman Analyzer) with several sampling attachments for easy analysis: with or without sample contact.

The Raman spectrum

Raman spectra contain peaks across a range that correspond to specific molecular connectivity and can be used to determine the composition of a sample. The spectral range is dependent on spectrometer design, and embodies a balance of resolution and sensitivity.

The «fingerprint region» (400–1800 cm-1) is used to ID unknowns and verify known materials. The region below 400 cm-1 is helpful in the analysis of minerals, gemstones, metals, and semiconductors. For most organic materials (oils, polymers, plastics, proteins, sugars/starches, alcohols, solvents, etc…), very little information above 2255 cm-1 is useful in Raman applications, as carbon-hydrogen chains contribute little to molecular qualification.

A selection of different bonds and functional groups with their general regions of activity in the Raman portion of the electromagnetic spectrum (click to enlarge).

Mira’s measuring range of 400–2300 cm-1 is perfect for most Raman applications, including:

  • Pharma & Other Regulated Industries
  • Food
  • Personal Care & Cosmetics
  • Defense & Security
  • Process Analytics
  • Materials ID
  • Education & Research

Mira is available in different configurations for all kinds of applications and user needs.

Good things come in small packages

Technology, analysis, ease of use, accuracy—handheld Raman has all of this in a small format that escapes the confines of the lab. It also invites many new types of users who employ Raman for vastly new and exciting applications. In the rest of this blog post, I share details about the development of components that led to miniaturization of Raman. This is followed by the origin story of Metrohm Raman, manufacturer of Mira (Metrohm Instant Raman Analyzers).

Four significant innovations came together to create Mira: diode lasers, specialized filters and gratings, on-axis optics, and the CCD (Charge Coupled Device) in a unique design called the «astigmatic spectrograph». These basic components of a Raman spectrograph can be seen in the graphical representation above (click to enlarge). Note that this is not an accurate depiction of the unique geometries found within Mira’s case!

Raman spectroscopy is a technique which relies on the excitation of molecules with light (energy). C.V. Raman’s discovery of Raman scattering in 1928 was enabled by focused sunlight, which was then quickly replaced with a mercury lamp for excitation and photographic plates for detection. This resulted in a simple, popular, and effective method to determine the structure of simple molecules.

C.V. Raman. India Post, Government of India / GODL-India

The first commercial Raman spectrometer was available in the 1950’s. As lasers became more available in the 1960’s, followed by improved filter technology in the 1970’s, Raman grew in popularity as a technique for a wide range of chemical analysis. Integrated systems were first seen in the 1990’s, and the miniaturization of instruments began in the early 2000’s.

Miniaturization of Raman spectrometers

Diode lasers were the first step toward handheld Raman. For those of you at a certain age, you may remember that these are the kind of small, cool, low energy lasers used in CD players, stabilized at the source with a unique kind of diffraction grating.

Powerful, efficient optical filters also contribute to miniaturization by controlling laser light scattering within the spectrograph. The development of sensitive, small Charge Coupled Devices (CCDs), which are commonly used in mobile phone cameras, permitted the detection of Raman scattering and efficient transmission of the resulting signals to a computer for processing.

The astigmatic spectrograph simplified both geometry and alignment for the many components within a Raman spectrometer; this design was the final advancement in the development of handheld Raman.

From Wyoming to Switzerland

By the 1990’s, new technologies developed for diverse industries were being incorporated into Raman spectroscopy. In Laramie, WY (USA) at the time, Dr. Keith Carron was a professor of Analytical Chemistry with a focus on Surface Enhanced Raman Scattering (SERS). Dr. Carron already had robust SERS tests, but he envisioned a low-cost Raman system that would introduce his tests to industrial, medical, or defense and security markets. His next steps would revolutionize Raman spectroscopy. 

Using commercial off-the-shelf parts, Dr. Carron and his team developed an economical benchtop instrument that eliminated the high cost of Raman analysis, helping to enable its use in university curricula. In the early 2000’s, a research and education boom began as Raman grew from an esoteric technique used in high-end applications to becoming widely available for all kinds of tasks. Dr. Carron is responsible for ushering Raman into the current era. A collaboration led to a portable Raman system and, ultimately, to a new astigmatic spectrograph design in a very small instrument.

The U.S. tragedies on September 11, 2001 created an immediate push for technology to detect terrorist activity. Around this time, anthrax scares further enforced the need for “white powder” analyzers. Fieldable chemical analysis became the goal to achieve.

Dr. Carron was inspired to invent a truly handheld, battery powered Raman device for the identification of explosives and other illicit materials. A number of iterations led to CBex, a palm-sized Raman system (even smaller than Mira!) designed by Snowy Range Industries, in February 2012 (see image). CBex caught the attention of Metrohm AG, and an offer of cooperation was sent to Dr. Carron in August 2013.

Along comes Mira

Mira was born in 2015. Not only is it a novel analytical instrument, but it is also unique amongst handheld Raman spectrometers. Mira has the smallest form factor of all commercially available Raman instruments. What truly sets Mira apart from the competition is its built-in Smart Acquire routines, which provide anyone, anywhere, access to highly accurate analytical results. It is rugged, meeting MIL-STD 810G and IP67 specifications—you can drop Mira or submerge it in a liquid to get an ID.

Once Raman escaped the confines of the laboratory, it suddenly had the potential for new uses by non-technical operators, who could perform highly analytical tests safely, quickly, and accurately.

In fact, miniaturization of Raman has revolutionized safety in a number of ways:

  • Direct analysis eliminates dangers from exposure to laboratory solvents and other chemicals.
  • Through-packaging analysis prevents user contact with potentially hazardous materials.
  • Simplified on-site materials ID verifies the quality of ingredients in foods, medicines, supplements, cosmetics, and skin care products.
  • ID of illicit materials such as narcotics, explosives, and chemical warfare agents supports quick action by military and civilian agencies.

What’s Next?

I hope that you have enjoyed learning about the evolution of Raman technology from benchtop systems to the handheld instruments we have today. In the future, we will publish more articles about Mira that describe, in detail, several interesting applications of handheld Raman spectroscopy. 

You can find the first one of these articles below!

Free White Paper:

Instrument Calibration, System Verification, and Performance Validation for Mira

Post written by Dr. Melissa Gelwicks, Technical Writer at Metrohm Raman, Laramie, Wyoming (USA).

The man behind Metrohm: Bertold Suhner

The man behind Metrohm: Bertold Suhner

On April 1 in 1943, Bertold Suhner founded Metrohm, in Herisau, Switzerland. Besides being our founder, he was a scientist, a sportsman, a painter, a pilot, and a philanthropist. We owe him a great company, and we are proud to serve the world with our legendary Swiss made instruments and application know-how – then and now.

Who was Bertold Suhner?

Bertold Suhner is mostly known for founding Metrohm. That makes sense—after all, Metrohm is the second largest employer in the Swiss canton of Appenzell Outer Rhodes and a successful global business. It’s impossible to overstate Metrohm’s importance for the Appenzell region and for analytical chemistry. However, reducing Suhner to Metrohm alone wouldn’t do him justice. His versatile interests and talents made him much more than an engineer, and his dedication to the community and the environment made him much more than the head of a company.

Bertold Suhner, founder of Metrohm.

Suhner was born in Herisau in 1910 as the son of a successful entrepreneur. After finishing school, he left his rural home region for Zurich. Here he studied mechanical engineering at the Swiss Federal Institute of Technology, which is one of the most renowned universities in Switzerland and in the world. But Suhner never lost the connection to his hometown Herisau. So, after having graduated, he returned to take up work at his father’s company. After some years, when Suhner was 33, he decided to start his own business. In 1943, Suhner and his friend Willi Studer founded Metrohm. Together with their team, they planned to manufacture measuring devices for high-frequency engineering and telecommunications.

Metrohm Headquarters in Herisau, Switzerland: 1943 and today.

A stoic leader

Suhner’s leadership style was paternalistic: though always open to ideas and ready to lend an ear, it was still he who made the final decisions. Not everyone always agreed with Suhner, including his co-founder Willi Studer. The two friends did not choose an easy moment in history to found their company; World War II was raging, and both money and materials were scarce. But the employees supported the company, and were eager to join forces and create something meaningful. Perhaps it was this test of stamina during the initial difficult years which laid the foundation stone for the later success of the company.

When the company debts exceeded the share capital by multiple times in 1947, Suhner decided to take steps to rationalize the company. Despite the difficult situation, he refused to take out further loans; the company would have to sink or swim on its own merits. As a matter of principle, Suhner refused to be dependent on banks. This dispute caused Willi Studer to leave the company after just four years, but it also established the sustainable business philosophy that is still alive at Metrohm today.

 

Willi Studer, co-founder of Metrohm.

Belief turns into success

Bertold Suhner, however, continued to believe that the company had a chance of succeeding. He took over the management of the company on his own, and shaped it according to his own vision. From the start, the company focused on organic growth rather than quick profits. Business strategies were never aligned to peak periods; instead, the company endeavored to grow slowly but surely. «My aim was always to keep the size of the company manageable, and create a solid base rather than just growing regardless of cost,» Suhner said. Over the course of its nearly 77-year history, this strategy is what has helped Metrohm to survive three recession periods.

The Metrohm workforce in 1953. Today, we have grown from a handful in the Appenzell region to thousands of employees around the globe.

Bertold Suhner responded to the trust demonstrated by his workforce by holding them in exceptionally high esteem: right from the start, he regarded them as more than mere employees. In 1968, when the company celebrated its 25th anniversary, Suhner wrote a text which summarized how he viewed his team:

«A single person can never take full credit for making a company successful. It is always teamwork that leads to success.»

Bertold Suhner

Founder, Metrohm AG

The Metrohm Foundation

Suhner retired from the operational management of Metrohm in 1968. However, he remained active in the background for several years. At the age of 72, Bertold Suhner stepped down from his position as CEO of Metrohm. However, he wanted to ensure that the company continued to exist in line with his vision; Metrohm was to remain an Appenzell-based company, and never lose its innovative spirit by merging or being sold off to a large corporation. As Suhner had no children, he needed to find another way to safeguard the future of the company.

 When he retired completely from Metrohm in 1982, he founded the «Metrohm Foundation» together with his business partners Hans Winzeler and Lorenz Kuhn. All company shares were then transferred to the nonprofit foundation. By initiating the Metrohm Foundation, Suhner was able to ensure Metrohm’s independence even after his resignation, while at the same time doing good for the local community. No longer dependent on profit-hungry shareholders and the pressure they exert, this enabled Metrohm to focus on its values and high quality standards – particularly with regard to the way in which people are treated.

Bertold Suhner (left) with Lorenz Kuhn, then head of marketing and distribution at Metrohm.

When the nonprofit Metrohm Foundation was created, supporting cultural and community projects became a fixture in the company: as sole shareholder of the Metrohm Group, the Metrohm Foundation is able to invest dividends in community projects. The choice of projects supported by the Foundation reflects the strong roots of the company in Eastern Switzerland. Today, the Foundation is one of the most important funding institutions for educational, cultural, and community projects. Amongst other things, it funds a chair for «New Materials» at Zurich University for Applied Sciences, and also supports the Association of Swiss Science Olympiads.

A Jack of All Trades

Despite his dedication to Metrohm, Suhner always found time to pursue other interests, and he had many of them. He may have been an engineer by profession, but his heart always beat for the nature and the natural sciences. He spent a lot of time in the mountains, mountaineering and skiing—both cross-country and alpine. Suhner also taught himself to play the organ and to paint. Matching his strong bond with nature, he painted landscapes in watercolors and in oil.

Perhaps it was these activities that ultimately defined him—much more than his academic achievements or his role at Metrohm. Even with regard to hiring new employees, he said:

«When I am faced with the task of selecting an employee, I am far more interested in his human qualities than in his technical knowledge. The hobby he pursues in his leisure hours is more important to me than what sort of education he enjoyed or what his testimonials contain. Of course specialized knowledge is essential, especially in a technical concern, but it is useless if it is not allied to human qualities.»

Bertold Suhner

Founder, Metrohm AG

After stepping down as the CEO of Metrohm, Suhner discovered his passion for mineralogy. This had started out as a collection of minerals and gemstones, but ultimately became his second career. Suhner’s thirst for knowledge made him take his new «hobby» so far that, at the age of 73, he obtained a Ph.D. from the University of Basel for his dissertation on the topic of infrared spectroscopy in mineralogy.

The philanthropist and environmentalist

Suhner always had strong ties to his hometown, Herisau, and to the Appenzell region at large. After Metrohm’s breakthrough, he had the financial means to give back to his home region. Cultural, environmental, and nonprofit causes could always count on his support. He even initiated a foundation for cultural purposes, the Bertold Suhner Foundation.

In this period of his life, Suhner became more and more convinced that humankind was causing damage to nature that was beyond repair. He tried to stop this and became active in the protection of nature. He again initiated a foundation specifically for his new cause: the Bertold Suhner Foundation for Nature, Animal, and Landscape Protection.

It’s not really surprising that Suhner pursued nature conservation with the same vigor that he had applied to all of his earlier undertakings, including Metrohm. But his unwillingness to compromise in environmental questions drove a wedge between Suhner and many of his friends and former colleagues, in particular those from political and business circles. In 1988, Suhner died from his worsening asthma at age 78. At that point, he was largely socially isolated.

Bertold Suhner: the person

Suhner never strove for financial wealth, recognition, or popularity. He always stuck to his principles, even if they were inconvenient, uncomfortable, or unpopular. You could call him a hardliner. But even though this sounds as though Suhner was fighting against the community, the contrary was the case: he was a dedicated philanthropist and environmentalist. He always tried to do what was best for society and for the environment.

What set him apart from others was that he didn’t shy away when this became uncomfortable.

Bertold Suhner (1910–1988).

Bertold Suhner built Metrohm around his ideas of independence and sustainability, and despite his departure from the company nearly 30 years ago, I still see Metrohm as a microcosm that is ruled by his values. Suhner’s strong values and his refusal to compromise didn’t always win him popularity prizes. But it’s probably safe to say that, without them, Metrohm wouldn’t be where it is now, as one of the world’s most trusted manufacturers of high-precision instruments for chemical analysis.

Learn more about Metrohm:

What sets us apart from the competition?

Not only our top quality products, but also our world-class experts!

Post written by Dr. Alyson Lanciki, Scientific Editor at Metrohm International Headquarters, Herisau, Switzerland. Primary research and content contribution done by Stephanie Kappes.

We are pioneers: Metrohm Process Analytics

We are pioneers: Metrohm Process Analytics

Did you know…

Metrohm not only manufactures instruments for laboratory analysis, but we also cater to the industrial process world!

Your analytical challenges are unique, so why shouldn’t your solution be as well?

We develop customized solutions for process analysis based on several of our analytical techniques offered for the laboratory. Under the Metrohm Process Analytics brand, we provide analytical systems for titration, near-infrared spectroscopy (NIRS), electrochemistry, photometry, ion chromatography (IC), as well as ion-selective measurements. Our subsidiary, Metrohm Applikon, based in Schiedam, the Netherlands, manufactures these process analyzers for all industrial sectors. With a global team of trained service engineers, you can always count on our experts to solve your challenges and support you—wherever you are.

Who are we? Pioneers!

In 1978, Metrohm Applikon installed the world’s first wet chemistry online analyzer at Dow Chemical in the Netherlands. Since then, the Metrohm Process Analytics brand has developed into one of the preferred solution providers of the global process industry for monitoring chemical parameters in large-scale industrial manufacturing processes.

Due to our decades of experience and more than 10,000 process analyzers installed worldwide, we are better prepared than anyone else to meet your requirements with a customized turnkey solution that helps you increase yields and reduce the risks of your process.

Key milestones:

(Click image to enlarge.)

Regulations and safety

Regulations, put in place by local, national, or even international authorities, require timely and accurate data in order to ensure compliance. Otherwise you run the risk of incurring costly fines, polluting the surrounding environment, or worse—a fatal accident. 

Whether determining moisture in the production of specialty chemicals, monitoring the efficiency of wastewater treatments, analyzing the amount of precious metals in plating baths, or measuring trace levels of contaminants in drinking water or in plastics used for children’s toys, Metrohm Process Analytics is up to the task.

Applications

If you’re interested in seeing a variety of the applications published by Metrohm Process Analytics, click the button and download our free material!

Online, inline, or atline analysis

Conventionally, most laboratory work is performed in an offline manner. However, in the industrial process environment, these offline samples no longer represent the current process conditions. This means that any necessary process adjustments take place hours or even days after an out-of-specification reading. As we all know, time is money!

On the other hand, since manual samples are taken much less frequently than online, inline, or atline measurements, it can be much more likely to overcompensate with chemical treatments when they may not be necessary. 

So, what are online, inline, and atline measurements exactly? (Click image to enlarge.)

Atline: This type of process analysis is automated and located close to the sampling point. However, continuous manpower is still necessary, as shown in this illustration.

Online: Only limited manpower is needed for this type of analysis, because the sample preconditioning, sampling, and the analysis itself are all performed automatically. With closed loop control, quick measurements lead to fast results and response times for process adjustments.

Inline: For the most representative data about a process stream, inline analysis is the way to go. Very limited manpower is needed here since measurements take place directly in the process stream without sample collection or product waste. Results are immediate, giving the quickest feedback for automatic, continuous process control without delays.

We love a good challenge

Our industrial process analyzers are designed to keep throughput high around the clock with minimal downtime, no matter the task at hand. Whether you only need to monitor a single analyte in a single process stream, or multiple components in several streams – even in hazardous conditions – we have you covered.

Metrohm Process Analytics works with our customers along every step of the way – from the design of the system, to providing a guaranteed application developed by our expert chemists, to factory acceptance testing (FAT). Service contracts are supported by a global team of trained engineers, ready to assist you in your local language.

Unlike the competition, we do not sell you an instrument, but rather an entire package on a silver platter.

Hopefully you are now even more curious about process analysis and the many benefits it provides to any industry. Metrohm Process Analytics is truly the partner for your challenging needs, small or large. Contact your local Metrohm sales organization for a consultation or a demonstration!

If you want to learn more about the benefits of process analysis for industrial sectors, we invite you to read our series here!

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Post written by Dr. Alyson Lanciki, Scientific Editor at Metrohm International Headquarters, Herisau, Switzerland.