Member since: 2023
Organization: Oak Ridge National Laboratory
Great results. Difficult to find something similar
Application Area: Polymer Characterization
"A very useful polymer characterization instrument. Very versatile as it gives the opportunity to obtain a range of information for the synthesized polymers (absolute molecular weight, dispersity, information about architecture) using only one calibration standard"
Member since: 2022
Organization: IOCL R&D
Easy to use, robust & versatile
Application Area:Molecular weight of various polymers
"Malvern instrument are always very reliable in reproduciblity, accuracy of the results. The instrument hardware are best quality which make the instrument robust and sustainable for long duration. Their user interface / software are also very good which make the work of interpretation of results, half done by itself (multi-angle light scattering with RI in GPC)."
Member since: 2021
Organization: Institute of Macromolecular Chemistry, Czech Academy of Sciences
Nice machine giving reproducible results with simple to use software and auto sampler
Application Area:Polymer Characterization (MW, Rh, IV, Rg, Functionality, Dispersity, etc.)
"The OMNISEC Resolve+Reveal GPC system from Malvern is for sure the only system in the market with such kind of integrated triple detection system along with high accuracy. The best part is their low angle light scattering (LALS) which is at 7°. This provides very accurate MW determination without the requirement of any fitting in the Zimm plot since 7° is almost close to 0° when it comes to extrapolation. Another eye-catching feature is the Omnisec software which controls all the features of the GPC and the detectors in one window. This feature is lacking in other competitor machines, I would say. However, since nothing is perfect in this world, there are also some shortcomings with the Malvern Omnisec GPC system. For example, the lack of enough data from the point of view of solvents used for regular polymer characterization. Malvern is strictly following Polystyrene in THF as a standard for detector calibration, but in cases of another solvent (e.g. DMAc+LiBr), they simply have no data. On the other hand, they claim that the column compartment can hold up to 6 columns but it does not seem so. At max, it can hold 4 columns only."
Manufacturer's ResponseHi Sachin, Many thanks for your positive review of your OMNISEC system. We recognize that not all customers want to work in THF as a solvent and do have parameters for working in a broad range of common solvents preloaded into the software. We are also available to discuss your specific requirements through our customer support specialists who are happy to support you in the application of new methods. It is also a great opportunity for us to understand which parameters are required and need to be included for future software releases.
Member since: 2021
Organization: Lund University
Great machine, excellent tech support, but poor experience with the sales unit
Application Area:Polymer Characterization
"We use the OmniSEC system to analyze the molecular weight of various types of polymers, such as polyesters, polystyrenes and polyurethanes with molecular weight ranging from a few thousands up to a million. The machine has an intuitive user interface, and produces good, reliable and reproducible results. The columns are easily accessible which makes routine maintenance easy, and the Malvern tech support has always been ready to assist us whenever necessary. However, we have had some problems with the Malvern sales unit, as sometimes the delivery times for consumables has been delayed, invoices sent to the wrong places and lack of communication (which I think is especially crucial when things go wrong), and this is why I only give 3/5 for after sales care."
Manufacturer's ResponseMany thanks for you feedback Niklas. It is great to hear that the OMNISEC is producing good and reliable data for your broad range of polymers. It is disappointing to hear about your experiences in the ordering of consumables, we will be reviewing your feedback and experiences to see how we can improve in the future.
Member since: 2021
Reliable instrument and easy to work with.
"Have been using the instrument for molecular weight determination of production and new material. Following the recommended procedures, instrument functions very well. Care must be taken not to introduce particles above 2um, and degassing of solvent is important. When switching between solvents specially aqueous and organic, taking extra time to go from low flow (0.1 mL/min) to higher flow rate (1 mL/min) eliminates many difficulties."
Manufacturer's ResponseMany thanks for your review Mohammad, it is great to hear things are going well.
Member since: 2021
GPC with triple detector
Application Area:Molecular weight of polymers
"Easy maintenance, especially for those familiar with the Varian system. However, warranty plan is advised for purchase - we had an issue with pump (leaking) within the first year and with a laser (LS) in the 3rd year (was replaced, very costly). Software is quite intuitive."
Manufacturer's ResponseMany thanks for your feedback on you OMNISEC system. We will be sure to feedback to the development team the issues you experienced. It is great to hear that you found the software intuitive.
Member since: 2021
Organization: Masaryk University
Good machine with nice data and potential for slight improvements in the SW.
Application Area:Protein characterization
"System is generally rather easy to use. The SW is helpful, however more easy extraction of all collected data would be appreciated - reports in pdf are nice but exporting of data itself is not straightforward. The basic tools e.g. wrenches for exchange of column and filters, could be included with the system upon purchase - their price is minimal compared to the whole system, but is is annoying to look for the right ones in local shops. "Baseline monitoring" of longer than 4 hrs would be sometimes appreciated - e.g. to monitor the system overnight if needed."
Manufacturer's ResponseThanks for your feedback. We at Malvern Panalytical appreciate hearing how we can make the user experience for our instruments even better and so these suggestions have been fed back to the team.
Member since: 2021
Organization: Colorcon, Inc.
A great addition to our lab capabilities.
Application Area:GPC analysis of polymers
"As expected, the system has a learning curve with the use of multiple detectors in series. Support has been great and has allowed us to learn the technique and be able to use and care for the instrument more effectively. Overall, the system is reliable and we are confident that it will provide us with accurate and reliable results."
Manufacturer's ResponseMany thanks for your feedback. It is always exciting to learn about a new instrument and I’m pleased you engaged with our Support colleagues to ensure that you are well placed to get the best quality data from your system both now and for many years to come.
Member since: 2020
The instrument is not suitable for our applications.
Application Area:Water soluble synthetic polymers
"We have had a great deal of problems with the instrument. Electronic and application based. An earlier model of this line performs the analyses on our products with no problems as evidenced by the fact that we have been getting accurate data for quite some time yet using the same conditions and column. We find that the lenses on the light scattering detector cloud and we also have issues with baseline irregularity. We have found that the staff of Malvern are much more familiar with organic solvent systems than aqueous as evidenced by the lack of practical assistance in solving our issues."
Manufacturer's ResponseThanks for your review. As a business we have extensive experience working with both aqueous and organic systems in a wide range of application areas. I am sorry to hear that our service has not met your expectations. I will engage with our local support team about this and see what we can learn from your feedback.
Member since: 2016
Organization: MDJD Consulting
Application Area:To relate molecular properties of polymers to bulk characteristics
"OMNISEC REVEAL is easy to use with an intuitive user interface."
Manufacturer's ResponseThank you for your review, we are glad to hear that the system is easy to use.
Member since: 2017
Organization: SOLVAY SPECIALITY POLYMER
Application Area:Polymer molecular weight and branching study
"Easy to operate and compatible with corrosive solvent. Quick analysis with reproducible data."
Manufacturer's ResponseThanks for the positive feedback on the system. I’m sorry you have not had a great after sales experience. Please feel free to feedback any problems you have experienced and we will look at making improvements in the future.
Member since: 2019
Organization: The Chemours Company
User-friendly, good for Mw - less accurate for Mn.
Application Area:Size exclusion chromatography
"The OmniSEC system is great for running all types of samples for absolute MW.The support from the Malvern team is also great as we run into issues like temperature control problems, method development challenges, and issues in chromatography. "
Manufacturer's ResponseThanks for the feedback on the system and the Malvern support.
Member since: 2014
Organization: The Dow Chemical Company
One of the best GPC/SEC instrument/software packages currently available.
Application Area:Polymer GPC
"Very nice integrated GPC package. Pump system isn't the absolute most stable on the market, but is much better than previous generations. Unless you want to piece together your instrument yourself from multiple manufacturers this is quite good. Detection array is likely one of or the best for GPC currently on the market. The software is very user friendly and hides much of the rigorous calculations behind the scenes (for better or worse). It's great for routine GPC/SEC characterization (99% of what everyone does). The software still has some room to grow in enabling advanced operation/control to do custom runs/calculations. Overall it is a great package. Malvern also backs it up with great customer service and access to world experts in GPC/SEC if you need it."
Manufacturer's ResponseThanks you for your review, we are glad to see that this product is filling your needs, else don’t hesitate to contact us.
Member since: 2015
Satisfied OMNISEC user
Application Area:Surfactants and Polymers
"I absolutely love the new OMNISEC system. As a user of the older GPC MAX and TDA 305 Sseries, I am very impressed by all the upgrades incorporated into this new system. Primarily, I am happy with the new user friendly software, sensitivity and external column manager ( quicker column changes). Since we purchased OMNISEC, we’re able to deliver more sensitive data, so our ability to support decisions has been directly enhanced. In an analytical lab like ours that operates so many techniques with relatively few people, improving productivity is a major gain."
Manufacturer's ResponseThanks for the positive feedback. It is great that you are finding the software user friendly and that the enhanced sensitivity is offering you real value.
Member since: 2018
Organization: University of Georgia
Great results, great instrument, software could use a little improvement.
Application Area:Analyze polymer molecular weight and composition
"The triple detection GPC system we have in our lab is very easy to use. I love the autosampler and the automation associated with purging and switching things out. However, the software has some room for improvement. It would be nice if data files and/or method files could be deleted. I have found multiple times I created an incorrect method file or have data files I don't want remaining on someone else's computer and I cannot delete them. That is really my only concern with the equipment. Aside from that, the GPC itself runs beautifully, the software is very easy to use, and the customer service is wonderful!"
Manufacturer's ResponseGlad that you love the autosampler and the automation system and that our customer support is so helpful. Our development team will take your review into account for future improvement of the software
Member since: 2017
Organization: The University of Alabama
Good insturment, software has some issues, customer service is great
Application Area:Novel polymer characterization
"The instrument itself is easy to upkeep. However, the software especially the sample queue is buggy. The customer service is great with the company however and they are always ready to help."
Manufacturer's ResponseThanks for the feedback. Apologies for the software issues, but please feel free to let us know any problems you have and we can make sure they are fixed in future releases. And as ever, don’t hesitate to reach out if you have any questions or need any support.
The world’s most advanced multi-detector GPC/SEC system.
Malvern Panalytical’s OMNISEC is a complete Gel Permeation Chromatography (GPC) / Size Exclusion Chromatography (SEC) solution consisting of systems, detectors and software. It includes OMNISEC RESOLVE, the integrated separations module, OMNISEC REVEAL, the integrated multi-detector module and OMNISEC software for advanced GPC/SEC analysis. OMNISEC RESOLVE combines an integrated pump, degasser, autosampler and column oven in a single advanced separations unit. OMNISEC REVEAL is the most advanced integrated GPC/SEC multi-detector available, incorporating refractive index, UV/Vis absorbance, light scattering and intrinsic viscosity detectors.