Sample Preparation2019-08-05T11:12:21+02:00

Sample Preparation

Reduce time and repetitive functions you need to perform, while providing highly reproducible results. Thermo Scientific automated sample preparation solutions include solvent extraction, solid-phase extraction, and evaporation systems.

See which solution fits best for your application analysis.

Accelerated Solvent Extraction (ASE®) with Dionex ASE 150 and 350

Tired of spending days on sample preparation? Tired of spending countless hours on labor-intensive sample preparation steps?

Accelerated Solvent Extraction (ASE®) is a patented technique for the extraction of solid and semisolid sample matrices using common solvents at elevated temperatures and pressures. ASE systems are available in the entry-level ASE 150 system, and fully automated ASE 350.

  • The ASE 150 system is an entry level system for laboratories with modest throughput.
  • The ASE 350 system is a sequential extraction system capable of automated extraction of up to 24 samples.

Extractions that normally take hours can be done in minutes using ASE with pH hardened pathways using Dionium™ components. Compared to techniques such as Soxhlet and sonication, ASE generates results in a fraction of the time.

The many steps involved in sample preparation can now be automated with ASE flow-through technology. Filtration and clean-up of solid samples can be achieved as part of the solvent extraction process in a single step. ASE offers a lower cost per sample than other techniques, reducing solvent consumption by up to 90%.

Dionex ASE systems can be applied to many industries

Environmental

  • Pesticides and herbicides
  • PAHs and semi-volatiles
  • PCBs
  • Dioxins and furans
  • TPH (DRO)
  • Explosives
  • Air sampling cartridges (XAD and PUFs)
  • Brominated flame retardants
  • ASE meets all of the requirements for extraction under U.S. EPA SW-846 Method 6860 Method 3545A for Pressurized Fluid Extraction, and is accepted under CLP SOW OLMO4.2.

Pharmaceutical and Natural Products

  • Active ingredients
  • Drug delivery devices and packaging

Polymers Using ASTM Method D7210

  • Oils and organic acids
  • Xylene solubles
  • Polymer additives (polyolefins, PVC)

Foods

  • Vitamins and antibiotics
  • Contaminants
  • Natural products
  • Pesticides and herbicides in food
  • Pesticide residues
  • Fat and lipid determination after acid pre-treatment
  • Herbal and dietary supplements

Consumer Products

  • Detergents
  • Paper and pulp
  • Bio fuels
  • Textiles and fibers

Solid-Phase Extraction (SPE) with Dionex™ AutoTrace™ 280

Solid-phase extraction (SPE) is a technique for liquid-liquid extraction that is used to remove certain compounds from a mixture of impurities based on their physical and chemical properties. Analytical laboratories use SPE to concentrate and purify samples for analysis. SPE can be used to isolate analytes of interest from a wide variety of matrices, including urine, blood, beverage, and water samples. SPE requirements vary depending on the amount of sample required. SPE systems can be separated into large or small volume techniques. Large volume techniques generally use 100 mL or more of liquid sample.

The AutoTrace® 280 instrument performs automated solid-phase extractions (SPE) of large-volume liquid samples for organic analysis. Liquid-liquid extractions that normally take long hours can be automated using an AutoTrace SPE system (Ссылка). Extraction steps that normally require constant attention by chemists and technicians are performed automatically, and an AutoTrace instrument significantly reduces sample handling compared to techniques such as separatory funnel or vacuum manifold for SPE. The tedious and time-consuming steps of liquid-liquid extraction can be greatly decreased by automating the SPE steps of condition, load, rinse, and elute. AutoTrace systems offer a lower sample preparation cost-per-sample than other techniques by reducing solvent and labor cost by up to 90%.

Automated Evaporation with Rocket Evaporator

Concentration and evaporation is an important step in achieving accurate analytical results with sample extracts. It is also labor intensive. The Rocket Evaporator automates this process, allowing the analyst to spend more time on other projects.

The Rocket Evaporator can be used either to dry samples completely, or to concentrate them to a small volume. It is equipped with the advanced performance features that Dionex users expect, such as effective bumping and cross-contamination protection, precise temperature regulation, and easy-to-use controls. A two-stage cold trap is built into the Rocket Evaporator, providing high levels of solvent recovery, even with volatile organic solvents. The cold trap auto-drains under the control of the evaporator to ensure that optimal solvent recovery is maintained, no matter what mix of solvents is being used.

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