Chromatography 11
Combined Liquid Handler and PLC Purification Systems Offer Increased Sample Throughput with Less Manual Intervention
Gilson now offers the GX-241 Liquid Handler as an optional autosampler to its reliable PLC 2050 and PLC 2250 Purification Systems. The GX-241 Liquid Handler provides automated sample injection, increasing throughput and decreasing hands-on time.
Using the GX-241 Liquid Handler, samples are aspirated into the PLC Purification System, providing faster injection cycle times and reducing contamination and carryover. User pre- programmed injections offer improved sample solubility and allow researchers to purify more compounds with a single injection reliably and repeatedly with a simple push of a button. The PLC Purification System is capable of flow rates from 1 to 50 mL/min, with potential of up to 250 mL/min, depending on the PLC Purification System.
The combined GX-241 Liquid Handler and PLC Purification System offers a compact footprint without sacrificing functionality. Queuing samples makes it easier to create multiple unattended sample purification runs, allowing users to pursue other lab tasks. Racks can easily be added or edited, with a test function to ensure the rack adjustments are correct before sample purification. Injection parameters are easily set up and controlled through the PLC Purification System’s touchscreen using the intuitive Gilson Glider Prep Software.
The GX-241 Liquid Handler with the PLC Purification System is ideal for industrial and academic researchers screening targeted sets of natural and synthetic drug candidates, and those purifying oligonucleotides and peptides. The combined system meets the needs of those requiring multi-injection of different samples when using preparative HPLC, flash chromatography, and CPC columns.
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Hassle-free Gas Management in Laboratories
Gas generators are nowadays largely recommended as a valid and safer alternative to cylinders, especially into small buildings. Furthermore, the use of a gas generator relieves lab personnel from frequent cylinders replacement, workflow interruptions and waste of material.
ErreDue has designed and manufactured professional solutions for on site gas generation in Italy for over 20 years. The experience and reliability gained throughout these years are now at the service of laboratories, for any kind of need: from standard generators for GC-FID, ICP, HPLC, to customised solutions and centralised plants.
ErreDue produces a complete range of laboratory gas generators: Hydrogen, Nitrogen, Oxygen, Pure and Zero air. All ErreDue gas generators can be easily managed through the graphic interface of the touchscreen display, or remotely through a LAN connected computer or through the free Android Application.
The product line now includes also a rack version of the Mars Hydrogen generator, perfect for the applications where space optimisation is critical.
ErreDue will present its renewed line of laboratory gas generators at Pittcon 2018, booth #1760.
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Q-sep Extraction Salts Make QuEChERS Even Easier
For years, the QuEChERS approach has made sample preparation faster and easier than traditional methods. Now, the new Q-sep extraction salts from Restek make an easy technique even simpler. Restek’s new, improved design provides the salts in a more granular form, so they flow freely and are easier to pour than powders. The convenient slim packets are easy to open and fit perfectly into extraction tubes, ensuring complete transfer without any spills.
These new extraction salts offer the same technical performance you’ve come to expect from the Q-sep line of QuEChERS products, just redesigned for your convenience. Keep your workflow running smoothly with new Q-sep extraction salts from Restek.
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SLE Plate Provides High Recovery Extraction of Analytes from Biological Fluids
Porvair Sciences announces a new easy-to-use 96-well Supported Liquid Extraction (SLE) microplate designed for high recovery extraction of analytes from biological fluids.
Using the Porvair SLE plate high analyte recovery, free of proteins and phospholipids, is routinely obtainable without the need for offline steps such as protein precipitation.
Supported Liquid Extraction is a separation technique similar to traditional liquid-liquid extraction (LLE) which uses water and an immiscible solvent to extract analytes. In SLE, the aqueous sample is immobilised on an inert support such as diatomaceous earth, and the organic phase flows through the support, eliminating problems such as emulsion formation.
Based upon the automation compatible Microlute 96-well format, the Porvair SLE plate provides fast, reproducible and economical sample clean-up when used with a simple vacuum manifold or positive pressure device. Proprietary frit technology in the plate ensures that samples will not drip or breakthrough until pressure or vacuum are applied, allowing longer dwell time in the plate wells.
The large pore size and high pore volume of the diatomaceous earth inert support, combined with a wide pH working range (1-13), allows the separation of viscous aqueous solutions such as blood, plasma and serum which may contain phospholipids and proteins. Demonstrating high recovery rates for
small polar and non-polar compounds the Porvair SLE plate provides the perfect sample clean-up device for physiological fluids prior to analysis by LC/MS. The Porvair SLE plate has also been shown to be particularly helpful to environmental, food and textile labs involved in sample clean-up prior to analysis.
For further information please visit
www.porvair-sciences.com/resources/porvair-chromatography-catalogue/.
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Automated Sample Clean-Up for PCB and Dioxin Analysis in ‘Pure’ Fractions
The automated sample preparation system DEXTech Pure offers fast, efficient, and economic separation of analytes in two fractions using a 3-column setup with aluminium oxide.
LCTech’s latest system for sample clean-up of PCBs and dioxins, DEXTech Pure, is based on the technique of the established system DEXTech Plus, and approaches mainly applications in the environmental analysis.
DEXTech Pure separates PCBs and dioxins in one fraction each and enables the subsequent measurement of PCBs and dioxins separately in one GC-MS run each. Cross-contamination is reliably avoided.
For users mainly interested in measuring PCBs, the system offers a special highlight in a speedy ‘PCB only’ method: The 3rd column (carbon column) can be replaced by a dummy column and the sample only passes two columns. This saves both, solvent and costs for the already favourable columns, and above all enormous runtime per sample. All matrices, be it food, feed, environmental, or biological samples, can be processed in an easy and efficient way.
DEXTech Pure comes with two default methods that are compliant to the EPA method and European regulations. An individual parameterisation via touch screen is also possible with only a few fingertips. Up to 28 methods can be stored and reopened in the system.
The general handling of the system is just as easy as the method input. For example, the columns are simply clicked in and pressure-tight locked with an electrical mechanism, with the same functionality as the whole DEXTech product family. Neither tools nor further manual working steps are required. In addition, DEXTech Pure provides various safety features like e.g. pressure monitoring, overflow sensor, or leakage sensor.
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