Xenoic® brand products are high quality items designed for ion chromatography applications and fits to all types of instruments and systems. They allow you to implement robust high-sensitivity ion chromatography with suppressed conductivity detection on your existing liquid chromatography system.
Xenoic® XAMS is an efficient and robust chemically regenerated membrane suppressor that is easy to use. With Xenoic® XAMS in your ion chromatography system, you will reach maximum sensitivity and minimum background for numerous analyses using eluents containing either hydroxide or carbonate.
Xenoic® products are designed with their full lifecycle in mind. Our focus is on minimizing environmental impact while maintaining the highest standards of quality and performance. As part of our commitment to a sustainable operation, we offer a recycling service. When a product has reached the end of its use, customers have the option to return it to Diduco. Through a carefully controlled process, we then disassemble each unit and evaluate every component. Wherever possible, materials are recovered and parts are reused in the production of new products. This approach allows us to reduce waste, conserve resources and extend the lifespan of the materials we use.
Discover how easy it is to give our products a second life. Follow the step-by-step instruction videos available under technical support.
Achieve accurate analysis results and consistent retention times by using the Xenoic® EQAX eluent quality assurance products. These items ensure that your ion chromatography eluent remain stable for longer periods of time. They accomplish this by a combination of carefully selected materials for eluent storage, and by preventing ambient carbon dioxide from getting into contact with the eluent during withdrawal.
The Xenoic® product family consists of XAMS suppressors, ASUREX automatic regenerators, plus the new EQAX eluent bottles and CO2 trap cartridges for enhanced eluent stability.
The Xenoic® items can be fitted to a wide range of systems for ion chromatography, liquid chromatography and HPLC. Compatible instrument brands include Shimadzu, Waters, Agilent, Knauer, Thermo, Dionex, Metrohm, Jasco, TOA, Perkin Elmer, MembraPure, Cecil Instruments, Hitachi, Shodex, and many more.
Suppressors are needed when performing trace analysis of anions in the low ppm range (mg/L) using conductivity detection. The purpose of the suppressor is to enhance signal-to-noise ratio by increasing sensitivity and reducing the background. The suppressor accomplish this by removing eluent cations and replacing them with hydronium ions (protons), thereby neutralizing the eluent. The suppressor is thus connected downstream of the separation column, before the detector.
To obtain optimum conditions for the suppressor an automatic regenerator is used. Xenoic® XAMS regenerated by Xenoic® ASUREX constitutes a powerful chemical suppression system without any need to prepare regeneration solutions on a regular basis. The external regeneration cartridge holds enough protons for months of unattended operation of the Xenoic® XAMS.
The Xenoic® EQAX Eluent Quality Assurance products maintains the quality of your ion chromatography eluent for a longer time by using carefully selected materials and by preventing ambient carbon dioxide from getting into contact with the eluent during withdrawal. This ensures a stable eluent pH with unaffected elution strength and safeguards against increasing background and noise.
The proprietary carbon dioxide adsorption material packed into the Xenoic® EQAX-TC1 Trap Cartridge changes color from blue to yellow when its capacity limit has been reached, thus automatically signalling when they need to be replaced.
The strongly basic eluents typically used in suppressed ion chromatography are not always compatible with chromatographic equipment constructed from stainless steel. This may affect lifetime of columns, suppressors and equipment since metal ions may continuously leak into the eluent stream. One solution to this issue is to use instruments where the pump heads and flow lines are constructed from poly(etheretherketone), PEEK. Another approach, that works well with carbonate eluents where pH is in the range 11-12, is to passivate all metal surfaces in contact with the eluent and replace majority of the tubing to PEEK. Hydroxide eluents do often have a pH 12-13, which is too high for many stainless steel-based instruments.
Xenoic® XAMS Membrane Suppressor is a robust chemically regenerated anion membrane suppressor for most applications using hydroxide or carbonate eluents. Designed for columns with 3-5 mm ID and flow rates 0.5-2 mL/min.
The Xenoic® EQAX-TC1 Trap Cartridge removes carbon dioxide from air passing through it. Fitted to the EQAX Eluent Bottles it prevents contamination of your eluent with carbonate ions. This ensures a stable eluent pH with unaffected elution strength and safeguards against increasing background and noise.
* Product lifetime depends on the analysis situation. Dirty samples will contaminate the XAMS suppressor and reduce its lifetime. Strong eluents, gradient separations, fast flow rates and over night eluent pumping will consume the capacity of the ASUREX-AR1 cartridge faster and reduce its lifetime. The AS1 solution is typically exchanged with the cartridge. The EQAX-TC1 trap cartridge can protect larger volumes of eluent if it is capped between use, so ambient air has limited access to its carbon dioxide absorbing resin.
** Compatibility indicated by product numbers of discontinued SeQuant brand SAMS and CARS items from Merck Millipore & Sigma Aldrich.
Let us guide you to the products and setup that works best for your particular analysis. We are here to help.