European Service & Support partner for MALS instruments.
Our BI-MwA and the SLD-7000 MALS from PSS are trusted workhorses for Molecular Weight determinations by labs throughout Europe. They are known for being reliable and producing great results time and time again over many years of use. However, even the most reliable equipment will benefit from periodic maintenance, servicing, qualification and repair by qualified engineers. As designated European support partner for the Bi-MwA and PSS SLD-7000 MALS, backed by original spare parts, TESTA is committed to assisting labs running these instruments to maximise uptime and producing repeatable, high-quality results.
When was your Brookhaven DLS or Gonio system last validated?
Annual validation and qualification of DLS Particle Sizer / Zeta Potential instruments and goniometer systems, is a frequently overlooked necessity to ensure the consistency and reliability of your results. By experience, we know that this important task to assure quality of results is often forgotten, delayed, or sometimes even not considered at all. TESTA Analytical is the European organization designated by Brookhaven Instruments as experienced and capable of performing the necessary tasks and full instrument checks in accordance with manufacturer specifications and, if required, with 21CFR11, GMP and other regulations concerning trustworthiness of results obtained with such top-notch equipment.
FAQ: I work in a pharma lab and need a better method of validating the operating performance of my HPLC systems from different suppliers.
A: FlowChrom is an automated non-invasive, real-time monitoring system providing a continuous digital record of your HPLC system performance. While most HPLC and UHPLC are designed to operate 24/7, unfortunately it is not uncommon for issues to arise when these 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 chromatography systems is malfunction of the solvent delivery system indicating the importance of constant surveillance and tracking of your HPLC pump performance. Read how a leading European pharmaceutical lab was delighted how FlowChrom 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.
We are delighted to announce a new partnership with MAZET & Co, (Strasbourg, France) who have an outstanding record of supporting laboratories with advanced chromatography and analytical technologies. In addition to expanding and better supporting TESTA flowmeter customers in French speaking markets across Europe and North Africa, this agreement reflects the two organizations’ shared commitment to offering advanced chromatography products to help separation scientists and process engineers achieve precise, qualified results.
For polymers where no appropriate standards are available, using GPC/SEC with viscosity detection is a trusted technique to derive details of polymer structure and the molar masses. Drawing upon decades of experience in developing viscometry detectors - TESTA Analytical has introduced a new cost competitive service to repair and provide spare parts for GPC/SEC viscometers from Polymer Standard Service (PSS), now part of Agilent.
Exciting News: Grant Recognizes Continuous R&D Investment.
We are thrilled to announce that our company has received a sizeable grant from the German Governmental BSFZ (Bescheinigungsstelle Forschungszulage) organization in recognition of our research and development activities conducted during the last 4 years. In making the award to TESTA Analytical - BSFZ highlighted the innovative spirit and dedication of our team as we continue to push the boundaries of technological development and knowledge. The BSFZ grant not only supports our ongoing projects but also underscores the vital role that R&D plays in driving progress and competitiveness in our industry. We extend our gratitude to the BSFZ for their support and look forward to sharing more updates on our journey of innovation!
Designed for educational facilities and labs running limited number of samples without the hassle of a full GPC/SEC system, our BI-MwA Analyzer allows you to determine the absolute average molecular weight of almost any macromolecule in a short time with little training.
Our Rapid Scanning UV Detector with remote flow cell kit allows users to separate process measurement from the detector using a 1-metre optical fibre. This enables highly accurate remote UV analysis to be made on process samples even under harsh or high temperature process conditions. The kit combines high sensitivity and linearity over four orders of magnitude concentration range.
Continuous qualification of HPLC system performance.
In many pharmaceutical laboratories the flow calibration of HPLC and UHPLC systems is a periodic check provided by visiting supplier service engineers. To meet analytical productivity goals many HPLC and UHPLC systems are set-up to operate 24/7. Unfortunately, it is not uncommon for issues to arise when these systems are left unattended. One of the most common problems with liquid chromatography systems is malfunction of the solvent delivery system indicating the importance of constant surveillance and tracking of your HPLC pump performance. FlowChrom is an automated non-invasive, real-time monitoring system providing a continuous digital record of your HPLC system performance.
Looking to characterize polymers, proteins or polysaccharides?
Incorporating a viscometer detector as part of your GPC/SEC system is a go-to method for providing a detailed insight into the physical structure of a wide range of macromolecules. However, not all viscometers are the same. The unique design of TESTA’s viscometer dramatically reduces signal noise thereby increasing sensitivity by more than an order of magnitude compared to any other commercially available viscometer. This allows you to work at lower flow rates and detect polymers, proteins, and polysaccharides at lower concentrations and of lower molecular weights, even enabling routine semi micro-GPC/SEC applications.
FAQ: Can I use a TESTA flowmeter to control my preparative chromatography pump?
A: Our Prep Flowmeter is designed to monitor and accurately measure (in realtime) liquid flow rates up to 650 ml/min. As TESTA flowmeters are fully supported by popular Chromatography Data Systems including OpenLab, Clarity and WinGPC, using this facility a feedback information loop can be generated so that the measured flow rate is used to actively control the connected pump.
Many thanks to the editorial team at Lab Manager. They recently reported how Laboratory managers seeking to enhance the precision and efficiency of macromolecular characterization can benefit from our easy-to-use LS Assistant. This accessory for MALS instruments delivers accurate specific refractive index (dn/dc) measurements, essential for determining molecular weights of various macromolecules.
Combination detector for High-Resolution GPC applications.
Our COMBO-TWO detector package is fully compatible with all commercial GPC systems operating from room temperature up to 80°C. Obtaining highly accurate and reliable MALS and DRI data using a COMBO-TWO is simple – just inject your sample into the low-volume flow cell. The outstanding stability of our COMBO-TWO detector package is the key to producing reproducible top quality data from high-resolution GPC applications which can have separation times of up to one hour.
Clarity is a powerful chromatography data software package for acquisition, processing, and instrument control used in regulated environments worldwide. DataApex, developer and supplier of Clarity software, has announced that its latest version 10 now fully supports all TESTA Analytical flowmeters, from the µFlowmeter up to the Prep-Flowmeter. The seamless connection of our high-performance, non-invasive flowmeters with Clarity, offers liquid chromatograph users precise and traceable real-time tracking of flow. This means that flow data is stored together with each chromatogram thus providing a robust qualification of each and every measurement performed.
A temperature independent method of monitoring Chromatographic performance.
Accurate measurement of flow is a critical parameter in liquid chromatography systems where retention times and peak shape are often directly affected by flow rate. A new technical study demonstrates how, unlike tradition flowmeters and volumetric measuring devices, our Liquid Chromatography flowmeter offers laboratory professionals access to reliable, repeatable flow data throughout experiments and system validations, without the need to constantly adjust for temperature variations.
Our new LS Assistant is an easy-to-use accessory for Multiangle Light Scattering (MALS) instruments that delivers accurate and reliable specific refractive index (dn/dc) valves – a key parameter for Molecular Weight determination. Available in optimized models matched to the operating wavelength of your light scattering instrument – precisely determining the molecular weight of polymers, proteins and nanoparticles becomes routine.
Prep flowmeter improves production of lipid nanoparticles
Lipid nanoparticles (LNPs) have emerged across the pharmaceutical industry as promising vehicles for delivering various therapeutic drugs. With LNPs also finding increasing use as effective delivery agents in food and cosmetic applications there is considerable interest in improving the high-shear mixing, microfluidics, and thin-film hydration methods used to prepare them. These small-scale production methods often involve use of several fluidic pumps each delivering a necessary component to create the target LNP. In these preparative protocols, aliquots of reagents must be carefully controlled to maximize quality and yield. A growing number of labs are investing in TESTA Analytical Prep Flowmeters for LNP production as their high accuracy and fast response enables real time control of the flow of reagents from all involved pumps.
Adaptive temperature control enhances RI detector performance.
Temperature control is crucial for refractive index detectors used in HPLC and GPC/SEC applications because the refractive index of a fluid is significantly affected by temperature changes. Even small temperature fluctuations can cause baseline instability and impact the accuracy of measurements. As part of the ongoing development of our Differential Refractive Index (DRI) detector technology we have developed a new self-adaptive (AI driven) temperature control feature that assures rock solid stability throughout the 30 °C to 80 °C temperature range. Benefiting from this powerful new algorithm our DRI detectors are able to reach a stable baseline in less than half the time of other RI detectors.
Sustainable, regulatory compliant tubing for Prep Flowmeter.
Capable of precise real-time monitoring of liquid flow rates of up to 650ml / minute, our Prep Flowmeter is a popular device for monitoring preparative scale systems used to produce larger quantities of pure compounds. To ensure compliance with regulatory standards in the food (FDA food contact criteria, NSF/5) and pharmaceutical (USP <88> Class VI, and USP <87>) industries, we have recently changed all Prep Flowmeter tubing to TYGON® S3® E-3603. Crystal clear and designed to resist flex fatigue and abrasion - the new tubing combines high performance with an eco-friendly bio-based formulation.
Choosing the right partner for speciality chromatography devices.
Drawing upon over 30 years’ experience, TESTA Analytical has earned a reputation as a respected creator and supplier of innovative, high performance chromatography instrument kits and detectors with OEM clients around the world. As a small, dynamic company we maintain the flexibility to not only offer you off-the-shelf GPC/SEC, HPLC and flow monitoring solutions but also to develop tailored systems to exactly match your custom and application needs. We focus on delivering complete solutions including training and support documentation for your equipment.
A major polymer manufacturer is using our COMBO-ONE DRI / Viscometer detector, as part of a GPC/SEC system, to characterize the structure of macromolecules that offer desirable performance properties. The client is a leading European manufacturer of high-performance water-soluble polymers for industrial applications. These polymers, although presenting a similar molecular weight and molecular weight distribution, have different physical structures which influence their performance in the target application.
FAQ: What benefits do TESTA flowmeters offer over Coriolis flow devices?
A: In addition to being typically less expensive - our thermal flowmeters offer realtime data while Coriolis devices typically need 30 seconds or more to stabilise before readings can be considered ‘ok’. The variability of this time lag with Coriolis devices can introduce uncertainty into the accuracy of flow measurements. Additionally, the time resolution of TESTA flowmeters is just milliseconds compared to several seconds with a Coriolis device making them much more suitable for validating the performance and troubleshooting intermittent faults with liquid chromatography systems.
Identifying and characterising polymers with desirable properties.
A new customer report reports how a manufacturer of water-soluble polymers has used Gel Permeation Chromatography (GPC) equipped with our COMBO ONE differential refractometer / viscometer detector to characterize the structure of similar molecular weight polymers that offer different performance properties.
For those of you looking to characterize polymers, proteins, polysaccharides and other macromolecules – Gel Permeation Chromatography is a powerful technique that delivers valuable information on molecular structure, branching, weight and size. However not all GPC systems and detectors are the same. Backed by over 35 years of technological innovation our high-performance GPC/SEC detectors and systems set a new benchmark for discerning scientists.
Qualification of the performance and operation of HPLC Systems is one of the most common challenges faced by GMP-regulated analytical laboratories. A new generation of powerful, yet affordable flowmeter-based tools from TESTA Analytical have been designed to automate fulfilment of HPLC system regulatory compliance guidelines and quality standards directly improving data security, traceability, and process reliability. Designed to facilitate seamless Good Documentation Practices (GDP) and adherence to GMP principles, our HPLC Pump Qualification Pack, equips laboratories with a calibrated flowmeter, complete with a digitally secure and fully compliant pump validation tool, ensuring seamless compliance with industry standards and regulations.
Our knowledgeable local agent in Turkey - DOA Laboratory Technologies reports on an enthusiastic response to demonstrations of the LC Flowmeter and HPLC Pump Qualification Pack from chromatographers working in regulated industries such as Pharmaceuticals. The HPLC Pump Qualification Pack which includes a TESTA Analytical LC flowmeter, tablet-computer with pre-installed data validation software is designed to automatically perform all necessary flow data calculations plus operational and performance qualification checks on your HPLC system.
Version 1.4 of our popular HPLC Pump Qualification Pack includes a series of updates that make the tool more flexible and audit ready. Improvements include a new Pump Validation Checklist to guide users through the validation process step by step, ensuring a structured workflow thereby reducing the chance of errors. Users can now adjust accuracy acceptance limits from 0.5% to 5% (the European Directorate for the Quality of Medicines and HealthCare (EDQM) standard). This flexibility allows users to align their validation protocols with various regulatory standards and different pump specifications. The HPLC pump qualification passing criteria now consider both relative standard deviation and nominal deviation, in accordance with EDQM guidelines.
Increase the accuracy of your molecular weight determinations.
Light scattering is widely recognised as the ‘go to’ technique fechnique for molecular weight determination of polymers and biopolymers. An accurate dn/dc value is essential for precise molecular weight determination using light scattering techniques. Design optimized for operating with any commercial light scattering instrument our Differential Refractometer is a versatile device which allows fast determination of the specific refractive index increment (dn/dc) of dissolved samples with extremely high accuracy and in just a few minutes. Without any limitations in terms of solvent and with a wide range of measurement temperatures, the Differential Refractometer is a true workhorse and a valuable addition to any Light Scattering lab.
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.
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/.
