How did one lab overcome the limits of subjective testing to achieve better results? Learn how Brian Barrera’s team at Millipore Sigma utilized the UV7 Spectrophotometer to enhance measurement accuracy, streamline workflows, and ensure compliance with stringent environmental standards.
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Brian’s Quest for Precision: Tackling Subjective Testing at Millipore Sigma |
How One Lab Elevated Precision: A Customer’s Journey with the UV7 Spectrophotometer
In environmental testing, precision is more than a goal—it’s a necessity. Laboratories around the world face increasing pressure to meet stringent regulatory standards while delivering consistent, reliable results. At the heart of this challenge lies the story of Brian Barrera, a Senior Quality Control Scientist at Millipore Sigma, and his team’s quest for greater efficiency and accuracy in environmental sampling.
Faced with the limitations of outdated, subjective testing methods, Brian turned to the UV7 Spectrophotometer from METTLER TOLEDO to transform their workflows. What followed was not just an upgrade in technology but a complete shift in how his lab approached compliance, innovation, and sustainability.
In this article, we explore Brian’s experience with UV7—from solving the challenges of subjective APHA color measurements to integrating a cutting-edge instrument that elevated efficiency and data integrity. Discover how this customer-driven journey showcases the power of collaboration between scientists and advanced instrumentation to set new standards in environmental protection.
Brian Barrera on Overcoming Subjective Testing Challenges at Millipore Sigma
Brian Barrera, a Senior Quality Control Scientist at Millipore Sigma, is a prime example of this dedication. “My role includes new instrument implementation, method development, maintenance and calibration of instruments, and working with departments outside of quality control to improve processes,” Brian shares.
One of his favorite parts of the job is coordinating appointments and interacting with field service engineers for preventive maintenance and repairs. “I enjoy working with technical consultants to set up new instruments,” he adds. Brian also performs environmental sample testing to ensure compliance with EPA regulations, highlighting the broad scope of his work.
Reflecting on past challenges, Brian recounts the limits of their previous solution for APHA measurements: “Our old method was subjective.” He explains that it involved comparing the color of the analyte in a glass Nessler tube. The old method was done with APHA standards in similar tubes. The process was prone to inconsistencies as different people might perceive the colors differently.
“Our previous solution for APHA measurements was very subjective. It involved simply looking down a glass nessler tube with 50 ml of the analyte poured into it. Sometimes, the inconsistencies would lead to delays if the sample was close to the high end of the specification, needing multiple confirmations.
Not only was our previous solution subjective, sometimes it was inaccurate.”
How Did the UV7 Spectrophotometer Enhance Reliability During Quality Control?
Brian's familiarity with METTLER TOLEDO instruments, gained over 15 years, made the UV7 spectrophotometer a natural choice for addressing the challenges faced in APHA color measurements. His experience with our reliability and performance across a range of instruments gave a solid foundation for trust in UV7.
Brian immediately saw that the UV7 spectrophotometer's unboxing and setup were simple. His first impressions of the instrument were overwhelmingly positive, noting its compact size and intuitive operation.
The setup process was quick, allowing immediate use and integration into the laboratory's workflow. His experience with UV7's setup process highlights how the right instrument can transform laboratory practices with minimal disruption.
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Figure 2: The picture shows another method which is run to determine Iodine Molarity on one of Millipore Sigmas products. The method was easily created and is now also run on the UV7 instead of an older spectrophotometer which saves the department a lot of time. |
Integrating UV7 into their workflow was simple. "I tested our existing APHA color standards on UV7 and found the numbers matched. I then wrote a simple procedure with touch screen screenshots for our team," Brian explains. His colleagues quickly understood the procedure, and the instrument has been in use ever since.
Brian found UV7's preloaded methods and the ability to modify and transfer these methods easily between instruments particularly appealing. He knew he had made the right choice.
Effortless Workflow Integration with UV7
Brian appreciates the ease of using the UV7 spectrophotometer. The One Click™ operation and intuitive touchscreen simplify the process significantly. This user-friendly design has streamlined training for new team members, allowing Brian Barrera’s team to quickly become proficient. Additionally, the ability to easily change and transfer methods between instruments has made the lab more flexible and responsive to evolving testing needs.
UV7 offers great flexibility for labs dealing with various samples and tests. Its versatility allows it to adapt to different applications, making it a comprehensive solution for many analytical needs. Brian’s experience in creating and adapting methods for UV7 shows how the instrument can support innovative testing approaches. He thinks UV7 has encouraged a culture of continuous improvement and experimentation in the lab.
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Figure 3: This picture shows a 1:1 comparison of the previous method of analyzing APHA color alongside the new method. With the new method, the lab uses seven volumetric flasks to make the standards for the validation of the UV7. These standards are easier to make and the data is considerable more accurate and precise. |
What Makes UV7 Stand Out?
The impact of using UV7 for efficiency and effectiveness has been significant. “UV7 has made testing substances for APHA color much more efficient, especially when handling multiple samples,” Brian notes. The waste has been reduced from 50 ml to ~2 ml per sample. Cleaning a 1 cm cuvette is easier than cleaning a large Nessler tube. These are significant improvements. “Samples can now be tested as an open series using the same water blank, and the scan time is only 3 seconds,” he adds.
In terms of effectiveness, UV7 gives reliable data. "With the old method, we only had our observations. Now, we get printouts that we attach to our lab reports, offering better documentation,” Brian explains. He is enthusiastic about recommending UV7 to other businesses and colleagues. “I would highlight the ease of use, the variety of analyses it can perform, and the ability to change and transfer methods between instruments,” he emphasizes.
“UV7 has made testing substances for APHA color much more efficient, especially when handling multiple samples. Samples can now be tested as an open series using the same water blank, and the scan time is only 3 seconds!”
Key Advantages of UV7
- Objectivity and accuracy: UV7 provides precise measurements based on quantitative data, eliminating the subjectivity of visual comparisons.
- Efficiency: The instrument's One Click™ operation and intuitive touchscreen interface streamline the testing process, reducing time and effort.
- Versatility: UV7 can be used for a wide range of applications, making it a valuable tool for environmental testing laboratories.
- Data integrity: UV7 generates reliable data that can be easily documented and reported, ensuring compliance with regulatory requirements.
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Figure 4. Example of the validation of the APHA color method. The customer is very pleased with the precision and accuracy of the instrument – especially that it lasts over time. |
A Brighter Future: Looking Ahead with the UV7 Spectrophotometer
Adopting UV7 was not just a matter of upgrading equipment; it was a step toward improving the overall quality and efficiency of the laboratory's work. Brian had very positive experiences with METTLER TOLEDO's customer support. The smooth integration of our instruments into his workflow highlights the value of a strong relationship between scientists and their equipment companies.
The future of laboratory analysis looks bright, with instruments like the UV7 spectrophotometer leading the way. Its impact on efficiency, accuracy, and sustainability sets a new standard for what laboratories can achieve. As technologies evolve and the demands on scientific research grow, instruments like UV7 will continue to play an important role in enabling discoveries and ensuring quality.
Why Precise Measurements Matter in Environmental Protection
The Environmental Protection Agency (EPA) and the American Public Health Association (APHA) play pivotal roles in the realm of environmental testing. They establish stringent guidelines to ensure the integrity and safety of our natural resources.
These organizations set the benchmark for water, air, and soil testing, ensuring that both environmental and public health standards are met. Accurate measurements in EPA and APHA testing are not just a matter of compliance. They are critical for safeguarding ecosystems, protecting public health, and making informed decisions that affect millions of lives.
Collecting precise and reliable data early on helps us detect contaminants and pollutants. This allows us to intervene in time to prevent long-term environmental damage and health issues. Inaccurate measurements can cause a chain of harmful effects, from affecting drinking water quality to making risk assessments unreliable in identifying potential hazards.
Anika Adams is Product Manager for UV/Vis Spectrophotometers at METTLER TOLEDO, where she focuses on driving innovation and optimizing customer workflows.
With a degree in business administration and experience spanning software development, mechanical engineering, and production, Anika brings a multidisciplinary perspective to the laboratory business. Her expertise lies in automating and enhancing customer processes, ensuring both product excellence and customer satisfaction.
