PDF catalog - Teknolab AS

AGROCHEMICAL AND FOOD
Sample preparation in food and agrochemical applications is often complicated by the nature of the original sample
matrix. In residue analysis, common sample types such as fruit, vegetables, soil or tissue are solid or semisolid,
and need specific sample pre-treatment methods to allow extraction of analytes. Some liquid samples,
such as milk, have high fat concentrations, making them difficult to handle using traditional methods.
In addition, the complexity of these matrices requires additional clean-up to remove interferences prior to analysis,
particularly for low level residue work.
This section highlights a range of products and techniques for simplifying sample handling and clean-up of these
difficult samples.
EVOLUTE SPE Columns
NEW EVOLUTE CX SPE columns are now available for extraction of basic compounds, and efficient clean up of
complex samples. See pages 25-27 for ordering information.
See www.biotage.com for the latest applications
ISOLUTE HM-N Columns for Supported Liquid Extraction
ISOLUTE HM-N Supported Liquid Extraction columns
provide a simple alternative to traditional liquid-liquid
extraction for complex aqueous matrices such as milk. The
columns contain a modified form of diatomaceous earth,
which acts as an inert support for the extraction process.
The aqueous sample is loaded under gravity, and is
absorbed onto the support. When a suitable water immiscible
solvent is passed through the column, the analytes are
efficiently desorbed, and the extract is collected. As the
aqueous and solvent phases are never in direct contact,
emulsion formation, a particular problem for fat laden
samples, is eliminated.
See page 93 for ordering information of ISOLUTE HM-N
columns.
ISOLUTE SAX/PSA SPE Columns for Interference Removal
Remove polar interferences and pigments from plant extracts prior to pesicide residue analysis with ISOLUTE
SAX/PSA columns.
Ordering Information
ISOLUTE sorbent SAX/PSA
Description Quantity Part number
ISOLUTE SAX/PSA 1 g/6 mL 30 924-0100-C
Please contact your local Biotage representative or Distributor for products that are available
through our Custom Manufacturing Service (see page 157-159).
See Application Note IST1027 for more information.
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