Whether you work in quality assurance, production or R&D - regular calibration is important because it ensures the accuracy and reliability of the measurements taken by your flowmeter. Most important of all, regular recalibration is required by many international regulations including 21 CFR Part 11 that apply to regulated industries. A yearly recalibration is therefore a fundamental part of compliance. Operating to ISO-17025 guidelines, recalibration of your TESTA flowmeters once per year at our Berlin facility is a sound investment to ensure the accuracy and reliability of your measurements and full compliance with many regulatory standards.
HPLC performance validation kit for Field Service Engineers.
Specifically designed for validating the performance of HPLC systems, our liquid chromatography flowmeter enables easy and accurate measurement of flow rates. Supplied in a durable carry case our flowmeter kit for field service engineers is the perfect tool for performing OQ/PQ and routine performance verification activities. In addition, using these real-time flowmeters, service engineers can generate information about short-term variation in HPLC system performance caused by pulsations and fluctuations.
By popular demand we are launching spares kits for our flowmeter family. For some time, customers have asked if they can purchase replacement components for their TESTA Analytical LC Flowmeter, µ-Flowmeter, Semi-Prep, and Prep Flowmeters. Using our top quality components ensures the reliability and performance of your flowmeter. Learn more now about our new Flowmeter Spares Kits for tubing and fittings.
TESTA Analytical has been granted a patent for our latest HPLC innovation. This patent describes a unique new HPLC check valve compatible with almost any solvent and usable at wide ranging flow rates. Check valves are one of the most critical components in a HPLC pump. Even the slightest deviation from perfect function can have catastrophic effects even on the simplest application. In addition to providing reliable long-term operation the new HPLC check valve has been demonstrated to operate flawlessly with traditionally problematic solvents including acetonitrile. TESTA Analytical is well known for its devotion to technological improvement and innovation. This new patent underlines the company’s commitment to developing the most advanced and reliable OEM products for liquid chromatography system manufacturers.
Many liquid chromatography users will have experienced how gas bubbles can result in changes in retention times, pulsating baselines, unexpected changes in peak areas, irregular peak shapes, pump outages and excessively high back pressures. Consequently, early detection of gas bubbles in tubing feeding a liquid chromatography system is vital to ensure the reliability of your analytical results. Our Solvent Line Monitor is an affordable device that automatically detects the liquid status in a transparent or translucent tube feeding a liquid chromatography system. It supports up to two optical sensors and provides constant feedback via an OLED display, as well as optical and acoustic alarms. The device is programmable in terms of sensitivity, mode of operation, and alarm reaction using a PC-based app. It can detect bubbles in tubing materials commonly used in HPLC, Ion Chromatography, and GPC/SEC systems and can stop your pump before a bubble can affect its operation and the reliability of your analytical results.
Our family of LC Flowmeters are renowned for their extraordinary accuracy, high reliability and outstanding overall quality. Recently, at the request of a customer ordering a new unit, a Model AB45001 LC Flowmeter was thoroughly tested and certified by a respected independent ISO 17025 accredited test facility. Results of these internationally recognized tests showed accuracy to be even better than the specified 0.2%, in fact in the region of 0.1% instead. Although expected, these results underline the outstanding performance and quality of our Flowmeters, making them a ‘go to’ tool for labs where traceable performance monitoring of their liquid chromatographs is key to their success.
Do I really need to flow track, calibrate and qualify my HPLC pump?
Not a very long time ago, the need to wear seat belts in cars was often disputed and their use thought to be somehow cumbersome. Today, the value and safety of seat belts is widely accepted, and their use self-explanatory.
Likewise, today the need for regular calibration and qualification of HPLC pumps is considered time consuming and its value often questioned. Trust in the consistency of HPLC pump manufacturer performance specification is widespread, leading to extensive use of pumps which are never calibrated or qualified for the analytical task they undertake. If nothing unexpected happens during your HPLC separation and analysis, then flow tracking, calibration and qualification could be viewed as redundant, as seat belts were in the past. However, when driving a car, nobody wants to take a risk and of course seat belts are used, and lives are saved. Although not that dramatic, the situation in an HPLC lab is very similar. The true value of flow tracking, pump calibration and qualification are recognized often when it is too late, the accident has already happened.
Be safe, give your HPLC Pump the appropriate seat belt - a TESTA Analytical real time non-invasive flowmeter.
Testa Analytical has recently received official authorization from Agilent to expand applicability of our Flowmeter Driver for use with Clarity Software by Data Apex. This important step will allow Clarity Users to take full advantage of the traceable flow monitoring capabilities of TESTA Flowmeters and add a decisive quality parameter to their HPLC protocols. By tracking flow rate of an HPLC system, it can be assured that the most important parameter of any analytical method is within desired specifications thus contributing to a comprehensive and reliable quality strategy. This is not only of importance to HPLC users working in a regulated environment, but also to any lab which consider data quality to be fundamental to their work.
GPC/SEC methods often use multiple detectors to gather information about the molecular structure of macromolecules. TESTA Analytical has prepared a presentation that provides an overview about the detectors most used in GPC/SEC applications. Further, the author explains the differences within each detector class, provides information about pros and cons of each detector and explores the value of combination detectors.
Any HPLC flowmeter used for qualification of HPLC systems must be recalibrated on a regular base, usually every 12 months. To calibrate and check the linearity of the flowmeter throughout its full range of operation, is of paramount importance, Traceability (and certification by a recognised authority such as ISO or Dakks) is a must in regulated labs. As such, the quality of your flowmeter calibration is of the utmost importance in evaluating its fitness for the task. While many flowmeter suppliers just offer a single- or three-point calibration, TESTA Analytical goes the extra mile and calibrates its Flowmeters using 10 points covering the full range of operation. This comprehensive calibration method ensures the most demanding evaluation of accuracy, precision and linearity thus assuring the performance required for the strictest HPLC system qualification requirements.
Quick and accurate validation of your Preparative Chromatography system.
Regular validation of Preparative HPLC pump flow rate is a critical task for ensuring the performance and repeatability of your system, as well as complying with regulatory requirements. Because few HPLC flowmeters have been available that are capable of covering the higher flow in preparative applications such as nanolipidic vaccine particle production, this has been an underexposed area of performance qualification. Herein we describe the validation of a positive displacement piston pump used in preparative liquid chromatography using a non-invasive, real-time flow meter. It has been demonstrated that this approach can reduce validation time in pumps by as much as 50%. In addition, the real-time digital data provided by the Prep Flowmeter will reduce human error and thus provide easy validation, all while increasing efficiency and reliability.
During the last year we intensified our new product development efforts particularly to expand our portfolio of real-time, non-invasive liquid flowmeters. In 2024 we officially introduced our Prep-flowmeter, the Field Service Engineer flowmeter kit, the HPLC Pump Qualification Pack and in the last month of the year the “FlowChrom” Module for HPLC Performance Tracking. Solving real challenges for chromatographers these “new” products have been enthusiastically received particularly in regulated industries where tools for operational and performance qualification are important. We would like to thank everyone for your interest in TESTA products and application solutions and wish you a very Merry Christmas and good health and prosperity in 2025
FAQ: Internationally traceable certification for flowmeters.
Traceable calibration of instrumentation for HPLC qualification is a fundamental requirement when compliance is a must. However, strict quality management often requires proof of performance certified by an authoritative institution independent from the manufacturer of the instrument. TESTA Analytical is now able to supply its complete range of liquid flowmeters with certification issued according to ISO standard and, for the most demanding clients – DaKKs certification. As the national accreditation body of the Federal Republic of Germany, DAkkS has a legal mandate: the accreditation of conformity assessment bodies. A DAkkS accreditation confirms that organizations such as testing, inspection and certification bodies can perform their activities competently in accordance with internationally valid standards. A certificate issued by an organization accredited by DAkkS is internationally recognized and accepted by any auditing entity.
To provide increased local support for our liquid flowmeter range we are pleased to announce a new cooperation with leading Italian laboratory services company – Labservice Analytica srl. Alvaro Figna, president of Labservice commented “We are very excited about what TESTA Analytical’s prep and liquid flowmeters can offer separation scientists using analytical or preparative liquid chromatography and have already secured our first orders.
It is not uncommon for issues to arise when HPLC systems are left unattended. In many instances, it is difficult to understand what the source of the operating problem was, to determine when it occurred and how many HPLC separations were affected and must therefore be repeated. One of the most common problems with liquid chromatographs is malfunction of the solvent delivery system indicating the importance of constant surveillance and tracking of your HPLC pump performance. Seamlessly integrating with most commercial Chromatography Data Systems (CDS) – FlowChrom creates a robust and reliable digital record ‘safety net’ confirming the validity of every HPLC separation you run and revealing to the operator any deviation from the planned performance.
Comprising a calibrated flowmeter, data validation tool and tablet-computer with pre-installed software - using our new HPLC Pump Validation Pack considerably reduces the time required for system qualification, while improving traceability of results. Leveraging TESTA Analytical real-time, non-invasive flow monitoring technology, the pack delivers an efficient and reliable qualification method for laboratories working with HPLC systems according to regulatory standards and protocols.
FAQ: Will a change in temperature affect the accuracy of TESTA flowmeters?
A: Within the range +5⁰C to +50⁰C the unique design of our Flowmeter ensures that, regardless of the ambient temperature or solvent temperature, the accuracy of our device will remain unaffected (+/- 0.5%).
The Pump Validation Software Suite is an easy-to-use tool designed to provide, in conjunction with a TESTA flowmeter, a fast and effective way to validate any HPLC, UHPLC or GPC/SEC system. Our application scientists have produced an informative new video to guide you step by step through the validation process. The flowmeter / software tool combo replaces time consuming, error prone manual methods and reduces validation time to just 10 minutes per HPLC system flow rate. If keeping your HPLC system running optimally and producing precise data is important to you.
TESTA staff are not only a very tight knit, hard working team at work, we also are happy to help each other outside business hours. A team member was in urgent need of help to clear a small plot of land with trees and bushes which had grown uncontrollably in recent years. A “bridge” day right after a recent national holiday was the perfect occasion to swing the chain saw and muscle the jungle. Our full day of manual labor was crowned by laughter and fun.
FAQ: Does my dispensing system deliver consistent and reliable results?
A: A leading European medical technology company consulted with TESTA Analytical to develop an instrumental solution to ensure the accuracy of dispensing a valuable pharmaceutical formulation. The proposed solution was based on our microflowmeter and solvent line monitor. Providing real time flow data our non-invasive microflowmeter was demonstrated to be the perfect choice for ensuring the dispensing accuracy of the pharmaceutical formulation. In the instrumental monitoring set-up our solvent line monitor was used to continuously check for undissolved gas microbubbles. By detecting these bubbles, and temporarily stopping dispensing, the solvent line monitor helps to ensure that the dispensing volume remains accurate.
For nearly 10 years – TESTA Analytical has been a true innovator in the design of HPLC detectors and monitoring devices. The specificity, rapidity, accuracy, precision, and the ease of automation of HPLC has made the technique a favourite for ensuring the safety and efficacy of pharmaceuticals, food products, cosmetics, and many other manufactured goods as well as raw materials. But not all HPLC detectors and monitoring devices offer your lab the same benefits. Why not explore our new web pages to discover what TESTA HPLC equipment can do for you?
Preparative scale liquid chromatography is a trusted technique for isolating and purifying gram quantities of chiral drugs, fine chemicals, natural products and food additives. Being able to precisely monitor the flow rate from your Prep HPLC system can improve the purity and yield of separated compounds. Operating up to flow rates of 650ml/minute, with a resolution of 0.02ml/minute, our new Prep Flowmeter is an ideal tool for real time monitoring of prep HPLC system being used to produce larger quantities of pure compounds.
With over 35-years’ experience of the analytical industry – our founder Carlo Dessy is internationally respected for his expertise and experience of proposing novel solutions to liquid chromatography application problems. Starting this month (October 22nd), we offer you the chance to book a 15-minute Teams discussion with Carlo about pre-agreed issues (understanding MALS-Viscometry calculation, sample prep for novices, validating my HPLC performance, you name it…). Depending upon chromatographer demand for this new service – TESTA Analytical plan to promote one specific date per month and invite people to apply via email for a TEAMS discussion, 15 minutes limit, no charge.
Flow rate is a useful indicator for any liquid chromatography system. A new case study describes how a German analytical services company has been using our liquid chromatography flowmeter to qualify the operation and performance of its three HPLC systems being used in customer GLP, GCP and GMP projects.
How to choose a partner for new product development.
Creativity is the ability to think in new ways and apply fresh perspectives to old problems. Drawing on 30 years’ experience of creating new chromatography products – TESTA Analytical has a proven history of being able to adapt and create unique approaches that may be even better suited than tried-and-true methods. The result is better new product developed for our customers.
How to choose a partner for new product development.
New products are the lifeblood driving the growth of technology companies. But which route should you take to achieve this – internal development or partner with a company that has the necessary know how? Empowered by decades of experience and experience in research and development of chromatography detectors and instruments, our world class team of experts has proven repeatedly to be a highly effective new product development partner to instrumentation companies worldwide. Not just for creating short-term success, but for the full life cycle of the product.
FAQ: What routine maintenance do TESTA flowmeters require?
A: Apart from the common-sense routine of keeping sensitive devices clean, no specific maintenance is necessary. During extended periods of inactivity or storage we recommend that you thoroughly flush your flowmeter with 2-Propanol (isopropanol). This will ensure the device will be ready to work again perfectly when needed.
Ensuring reproducible HPLC separations in different solvents.
A: Our family of liquid flowmeters are designed with biocompatibility in mind. We utilize materials such as PEEK and borosilicate glass for wetted components because they are inert to biological samples. Aseptic techniques are often employed to prevent contamination from pathogens like bacteria and viruses. Because TESTA’s non-invasive flowmeter design does not include intricate pathways, gears, or seals they do not require disassembly and can be easily cleaned with sterilizing solution or weak acid to eliminate bacteria and viruses.
TESTA Analytical visits Karlsruher Institut für Technologie.
On a recent service visit to the prestigious Karlsruher Institut für Technologie (KIT), our founder Carlo Dessy took the opportunity to also provide an intensive free training session on advanced techniques for particle sizing and zeta potential determination. Drawing upon his over 30 years of experience at the cutting edge of analytical science – Carlo was able to describe less known techniques that can decisively increase your understanding of samples investigated using Dynamic Light Scattering. The visit provided a deeper understanding of the instrument's capabilities and was greatly appreciated by our host at KIT.
Maximizing pump uptime and fluid delivery accuracy.
Our Solvent Line Monitor (SLM) is a smart sensor designed to protect pumps from running dry while also optimising process performance. Designed to automatically detect microbubbles in flow control applications - the SLM is a great tool for engineers who need to prevent expensive downtime due to pump malfunction caused by these unwanted gas bubbles. Offering real time detection of undissolved gas microbubbles in almost any fluid the SLM will also maintain the accuracy of pumped fluid delivery in your production processes.
FAQ: How can I collect, and store data generated by my Flowmeter?
A: Our liquid flowmeters are designed to interface to any PC via an integral USB interface. For real-time data collection, visualization and storage, two options are available: the Flowmeter PC-App and the Chromatography Data System (CDS) Driver. Our easy-to-use PC-App is widely used for validating the consistency of performance of pumps serving dispensing, flow chemistry and liquid chromatography applications. For labs looking to fully integrate flow data with liquid chromatography data, our powerful CDS Driver software provides a direct interface to different HPLC software packages from the leading HPLC system suppliers. This software package enables storage of flow rate data along with each and every chromatogram, thus opening the gate to a total quality assessment environment.
Do you need a new high-performance liquid chromatography detector but do not have the time or resources to develop it inhouse? Developing a new liquid chromatography detector requires a partner who understands the specific chromatographic needs of you target application and can transform these needs into a high-quality tailored solution. Drawing upon decades of chromatographic expertise and knowledge, TESTA Analytical has repeatedly proven ourselves as a highly effective speciality HPLC, UHPLC and GPC/SEC detector development and supply partner to a growing number of instrumentation companies worldwide
Ensuring reproducible HPLC separations in different solvents.
HPLC separation protocols employ many different solvents to accommodate the varying properties of different analytes. Ensuring consistent elution profiles is a key requirement to ensure reproducible results. Continuous monitoring of the delivered HPLC eluent flow rate is therefore essential when permanent validation of results is desired or necessary as it is in regulated industries. A new technical study demonstrates the utility of our non-invasive liquid flowmeter for validating the performance of HPLC systems across a wide range of different solvents.
TESTA flowmeter software driver approved by Agilent.
After extensive testing, Agilent Technologies has confirmed its full approval for our rc.NET based software driver which enables seamless integration of TESTA flowmeter data with their powerful OpenLab Chromatography Data System (CDS) software. The software driver supports all non-invasive liquid flowmeters from TESTA Analytical enabling real-time storage of flow rate data along with chromatograms thus opening the door to continuous monitoring of Agilent HPLC / UHPLC system pump performance. This innovation represents a breakthrough in total quality assessment of chromatography data and is expected to become a standard requirement especially in regulated industries.
Over the last 15 years - the PSS SLD 7000 Multi Angle Light Scattering (MALS) established itself as a tried and trusted device for direct determination of the absolute molecular weight distribution of polymers. Available as a direct, modern replacement for your SLD 7000 - our Bi-MwA MALS detector offers the highest performance to price ratio of any light scattering system available for molecular weight determination. If you are looking to determine absolute molecular weights of synthetic polymers, proteins or other macromolecules quickly and accurately, then look no further. The Bi-MwA is a powerful tool that can dramatically increase the capability of any GPC/SEC system enabling the precise and accurate determination of the molecular weights of polymers and nanomaterials in solution.
FAQ: How often should I solvent flush my refractive index detector (RID)?
Answer: As often as needed is the simple answer. A good practice is every time when solvent is replaced, flush the RID several times and observe the trend of the baseline. Once the baseline stabilizes, only then you can assume the reference is filled with new solvent. On a day-to-day basis, flush your RID a minimum of once a day, preferably at the beginning of the working day and for good measure, flush again at the end of the working day. Following this procedure will help maintain the accuracy and repeatability of your RID measurements.
FAQ: Why should I solvent flush my refractive index detector?
Answer: Here are 4 good reasons to solvent flush your refractive index detector (RID). Firstly, the reference cell in your RID must contain the same solvent as used as in the eluent channel, regular flushing assures this. Secondly, while eluant constantly flows through the sample cell, the reference cell content is static. In time, bubbles may collect in the cell causing an imbalance in the signal. Flushing will remove the bubbles. Thirdly, it is often the case that solvent mixtures change with time. This happens within the reference cell of a RID as well. Flushing makes sure fresh (and representative) solvent is in the reference cell. Finally, upon replacing solvent A with solvent B, you must ensure that your RID reference cell contains only the new solvent. Even the smallest traces of the previous solvent may ruin a measurement.
HPLC gradient validation using non-invasive flowmeters.
The traditional method for validation of gradients in an HPLC system currently relies heavily on the assistance of a UV detector. This methodology does though have well documented limitations. This tech note describes the benefits of an alternative approach using non-invasive flowmeters, based on a thermal principle, which are proven as a fast and accurate tool for determination of flow rate in HPLC systems.
When a mass sensitive GPC/SEC detector is not enough.
Most modern GPC/SEC systems are equipped with a high-performance mass sensitive detector such as a MALS or a viscometer. However, where applications are more demanding, such as with highly branched lower molecular weight polymers or block copolymers, a single mass sensitive detector is not sufficient to fully characterize the sample under investigation. Absolute molecular weight, as delivered by MALS or obtained with a viscometer detector, is often only a secondary parameter in comparison to the more insightful Mark-Howink parameters. Information about the physical structure of a polymer, which determines its behavior and function, can only be obtained by combining different mass sensitive detectors in one system and combining their results into a single picture. For this, the combination of MALS and viscosity, together with refractive index detection for concentration data delivers the most information-rich results while also proving absolute molecular weight and intrinsic viscosity results.
Many process systems still rely on a RS232 interface for communicating with connected device. Of increasing importance in process applications is accurate determination of volumetric flow rates for instance to provide precise dosage of reagents. To assist clients who want to deploy our non-invasive flowmeter technology in process applications, TESTA has created a new version of its LC Flowmeters to fulfil this need. While keeping all key performance parameters constant, this new device offers full communication possibility using a reliable, high-speed RS232 interface.
A prestigious Metrology Institute in Beijing, China has investigated and approved our HPLC flowmeter as a modern alternative to the traditional gravimetric flow calibration method for HPLC pumps (National Metrology Verification Regulations of the People's Republic of China JJG705-2014 Liquid Chromatography). A scientist from the Metrology Institute said “The TESTA HPLC flowmeter is simple to install and use, and provides consistently reliable quantitative and fault diagnostic data in realtime. Overall, we feel that this revolutionary product will save HPLC system users considerable time they have previously spent on undertaking calibrations”.
Benefiting from a background in chemistry and keen interest in exploring the intricacies of liquid chromatography and structural determination technologies – we welcome Naila Azizah to the technical support team at TESTA. Naila commented “From day one, I've been welcomed into a dynamic and supportive team environment. My role involves troubleshooting customer issues and providing technical guidance”. She added “I have also been involved with undertaking and writing up some applications development work related to our HPLC flowmeter”.
Many thanks to LaborPraxis magazine. They recently reported how our non-invasive HPLC flowmeter and validation software provide the perfect combination for labs looking to automatically validate the real-time performance of HPLC, uHPLC and GPC/SEC pumps.
This month – TESTA Analytical marks its 10th anniversary. Drawing upon the decades of experience of founder Carlo Dessy, supported by a growing team of specialists and engineers, our company has established itself as a respected creator and supplier of innovative, high performance chromatography detectors to end users and instrumentation companies around the world. To mark this milestone – we offer a special discounted package price of just Euro 2250 to any end user purchasing a new HPLC flowmeter and flowmeter software driver for chromatography data systems before 31st July 2024.
Preventing the Jetstream effect in HPLC flow measurements.
Determination of flow rate in HPLC systems using non-invasive flowmeters is well documented. However, a problem arises when a phenomenon known as “Jetstream” occurs. This effect can occur due to an abrupt change in tubing ID. A sudden change from a narrow bore to a significantly larger bore will result in a faster “core stream” in the larger ID tubing but leave the liquid layers closer to the wall of the tube practically unperturbed. The Jetstream effect will affect the velocity profile of laminar flow and create disturbances which affect accurate measurement of HPLC flow rate. A new TESTA Analytical tech note describes this effect and describes a methodology for avoiding the Jetstream effect in HPLC flow measurements.
Our popular COMBO-ONE (DRI / Viscometer) and COMBO-TWO (DRI / MALS) combination detectors offer significant advantages over conventional GPC/SEC detectors, offering absolute molecular weights in one case and making universal calibration available in the second case. However, when the focus of your investigation is not limited to molecular weights but needs to get deeper into understanding the physical structure of a compound then our Trinity combination of DRI – MALS- Viscometer is simply unbeatable. The Trinity detector delivers absolute values for molecular weights plus absolute intrinsic viscosity and precise Mark-Howink coefficient data enabling you to unlock information about both chain flexibility and molecular density. As a result, your determination of macromolecular branching can be based on solid data rather than assumed or projected data, opening the way to a deeper understanding of your material under study.
Is GPC detector stability a limiting factor in unlocking the molecular weight, structure or conformation of your polymer, protein, or advanced material? The outstanding stability of our COMBO-TWO detector package is an advanced analytical solution for high-resolution GPC applications which can have separation times of up to one hour. Combining a high-performance 7-angle Multi-Angle Light Scattering (MALS) and an ultra-stable Differential Refractive Index (DRI) detector that operate at the same wavelength with minimal delay volume, COMBO–TWO delivers exceptional results.
Patent granted for revolutionary viscometer design.
The German Patent Office has recently granted TESTA Analytical a patent for an advanced differential viscometer design that has the potential to revolutionize GPC/SEC application measurements. The novel viscometer design avoids the use of delicate pressure transducers for detection as used by all instruments currently available on the market. Instead, viscosity is directly derived from an accurate and precise measurement of flow in the two branches of the differential bridge. This patented technique results in a more rugged design eliminating the possibility of pressure peaks that may destroy a sensor. Coupled with outstanding sensitivity, compatibility with almost all solvents used in GPC/SEC and a wide dynamic range, this new design sets a new benchmark for this widely used technique.
When an off-the-shelf Liquid Chromatography detector just won’t do
Whether you need to outsource a standard chromatography instrument or detector development project or find a partner to develop a chromatography product tailored to solve a challenging application, our chromatography product development service is for you. Drawing upon decades of experience, TESTA Analytical has established itself as a respected creator and supplier of top quality, innovative, high performance instrument kits and detectors for liquid chromatography suppliers around the world. We pride ourselves on providing a level of technical and applications support that few companies can match. As a small, dynamic company we maintain the flexibility to not only offer you off-the-shelf solutions but also to develop tailored systems to exactly match your needs. We focus on delivering complete solutions including training and support documentation for your equipment.
Convenient flowmeter kit for HPLC field service engineers.
Many thanks to Chromatography Today. They recently reported how the unmatched baseline stability of our DRI detectors, which operate up to 80°C, are the perfect tools for helping unlock challenging GPC/SEC, HPLC and UHPLC separations. In addition the publication reported how a leading European pharmaceutical laboratory is using our Liquid Chromatography flowmeter and software driver to manage data from HPLC instruments with different chromatography data systems in their tightly regulated client-server environment.
Differential Refractive Index detector in the press.
The baseline signal stability of any liquid chromatography detector is particularly important, as it is a limiting factor in peak determination. Many thanks to LCGC International. They report how detector stability, such as is offered by TESTA’s range of differential refractive index detectors for GPC/SEC, HPLC and uHPLC gains particular importance in high resolution applications where analysis time can be long.
Conformity or calibration - which certification do you require for your Flowmeter?
Did you know that we offer a choice of certification services to demonstrate the reliability and quality of each and every flowmeter we build and ship to your lab? All flowmeters come with a free Certificate of Conformity demonstrating compliance of each individual device with our published performance specifications. This certification is typically sufficient for any application involving constant monitoring of flow rate. However for labs looking to validate or certify the performance of a pump within its range of operation this requires the use of flowmeters which are themselves validated.
Why should I use TESTA’s flowmeter software driver?
Saving real-time flow rate data with each chromatogram is a valuable aid to enabling total quality assessment of any liquid chromatography system. Based on rc.NET technology, our Flowmeter software driver offers separation scientists a powerful, yet easy to use tool enabling real-time communication with Chromatography data systems, supporting Chromatograph fault diagnostics, and facilitating integration with Laboratory Information Management Systems (LIMS). This software driver, operating in conjunction with a TESTA Liquid Chromatography Flowmeter, empowers lab users with tools to continuously monitor, control, and integrate flow rate and chromatographic data effectively.
Leverage our technological I.P to create winning products.
Our history of continuous investment in research and development has resulted in a steady stream of innovative chromatographic technologies able to solve new and challenging problems. Notable developments include our unique Viscometer/Differential Refractive Index combination detector which offers unmatched sensitivity and resolution plus a high-performance rapid scanning UV detector which offers the widest dynamic range of any UV detector currently available. In the last two years our development of non-invasive real time flow monitoring technologies for calibrating and validating liquid chromatography performance has been creating a real buzz amongst separation scientists. Want to know more about leveraging our technological intellectual property (IP) to help give your next generation product a competitive advance?
Offering extremely accurate, sensitive, and high-resolution measurement of flow in real time – TESTA flowmeters are the perfect non-invasive monitoring tool for a growing range of liquid chromatography applications. For the first 100 days of 2024 – we will include free-of-charge our powerful flowmeter software driver (normal price – Euro 595) with every new Liquid Chromatography or Micro flowmeter purchased. Operating via your Chromatography Data System this software driver enables you to acquire and save real-time flow rate data with each chromatogram to validate the performance of your HPLC, uHPLC, GPC/SEC or LC/MS system and its compliance with the operating protocol you are using.
Continuous validation of HPLC performance in a regulated environment.
Our flowmeter software driver for chromatography data systems has successfully passed extensive testing in a leading European pharmaceutical laboratory. Managing a diverse range of different HPLC instruments with different chromatography data systems - the pharmaceutical lab was delighted how the software driver enabled easy acquisition and traceable logging of flow data from all its liquid chromatographs. In addition, they found that saving real-time flow rate data with each chromatogram is a valuable aid to enabling total quality assessment of their HPLC and UHPLC systems.
A new scientific paper, co-authored by our MD – Carlo Dessy, describes how a TESTA multi-detection gel permeation chromatography / size exclusion chromatography (GPC/SEC) system including multi-angle laser light scattering (MALS) and advanced DRI-Viscometer Combination Detector, has been applied to monitor radiation-induced synthesis of internally crosslinked nanostructures from poly(acrylic acid) (PAA). The spectacular results demonstrate that this modern tool yields a more detailed picture of reaction mechanism and product structure than other techniques used to date and opens the way for the tailored design of new PAA nanomaterials.
Testa Analytical uses cookies to distinguish you from other users of our website. This helps us to provide you with a good experience when you browse our website and also allows us to improve our site.
A cookie is a small file of letters and numbers that we store on your browser or the hard drive of your computer if you agree. Cookies contain information that is transferred to your computer's hard drive.
We use different technologies e.g. to measure the use and efficacy of a website, for authentication or to simplify website navigation. Cookies are one such technology. A cookie is a data element which a website sends to your browser. The cookie is saved on your system as an identifying piece of information that identifies your system.
Visitors' IP addresses are captured on our websites for the analysis of malfunctions, the administration of the website and the attainment of demographic characteristics. Furthermore, we use IP addresses and, as necessary, other information which you have made available to us on this website or by other means to find out which of our website are being visited and what topics interest our visitors.
Most browsers are now set by default to accept cookies automatically. However, you can also limit the use of cookies via your browser setting. We recommend that you accept cookies because cookies enable you to use several of the functions on our websites. Not accepting cookies may disrupt necessary functions on our websites. For details, see https://cookiesandyou.com/.
