Part No: TechTipIssued year: 2011File size: 0.09mbFile type: pdf
This month’s topic of discussion will be the operation of the valves within the SPE-DEX® 1000/3000 extractors. There are several internal valves in the extractors, the solvent to waste valve, the sample collect valve and the water to waste valve.
Part No: P016Issued year: 2007File size: 0.16mbFile type: pdf
In order to obtain a fast synthesis of an N-unprotected tripeptide, microwave (mw) assisted deprotection, coupling and partial deprotection were applied starting with a purified protected dipeptide [Fig. 1]. The three consecutive mw assisted steps were performed without any intermediate purifications and were accomplished within some 30 minutes. The resulting crude mixture containing the Boc deprotected tripeptide ester was shown to be quite complex [Fig. 2]. The crude product was subjected to automated reversed phase flash chromatography, followed by automated fraction pooling and “thin film evaporation”. The total time for the entire procedure was 1 h 20 min. The purity of the product was > 99%.
Part No: P197Issued year: 2019File size: 1.01mbFile type: pdf
Perfluorinated compounds (PFCs) are a group of compounds that have been used in a wide array of industrial and household applications, including fabric protectors, non-stick coatings for cookware, coatings for food packaging and in some fire-fighting foams.
Their persistence in the environment allows them to accumulate in water sources, particularly those used for consumption.
This work will demonstrate the use of a cartridge-based extraction
system to extract and quantify up to 24 PFC compounds in drinking
water to highlight the challenges associated with this application.
Part No: PPS484Issued year: 2018File size: 0.21mbFile type: pdf
Dr. Simon Hammann is Postdoctoral Researcher at the
Department of Anthropology and Archaeology, University
of Bristol. By combining chemistry with archeological
research, he is able to look back in time and has produced
the first direct chemical evidence for dietary cereal
processing among Romans.
Part No: PPS433Issued year: 2016File size: 0.78mbFile type: pdf
Customer Case: Japan Frozen Foods Inspection Corporation.
The Japan Frozen Foods Inspection Corporation (JFFIC) made the transition from traditional mouse
testing of shellfish toxins, to instrumental analysis by developing original methods. In the sample
preparation procedure JFFIC uses EVOLUTE® ABN hydrophilic/hydrophobic SPE columns from Biotage.
Part No: PPS426Issued year: 2016File size: 0.38mbFile type: pdf
Customer case: Welsh Water. Analytical on-line cartridges for environmental testing from Biotage were released in 2016. Russell Gibbs from Dŵr Cymru Welsh Water has just started using them for drinking water testing.
Part No: CM-TRIT-0810Issued year: 2010File size: 0.26mbFile type: pdf
Trityl-ChemMatrix is mainly used to obtain a protected peptide as is has very low TFA cleavage conditions (under 1%). This resin therefore has the same cleavage conditions as the Cl-Trityl-polystyrene. On request, Trityl-ChemMatrix resins can
be offered preloaded will all 20 natural amino acids. Other amino acids can be preloaded on special request. Please take note that the Cl-Trityl-ChemMatrix resin is not offered for stability reasons. It is most effective to start with the Trityl-
OH-ChemMatrix resinchlorinate the resin and then add the amino acid of desire.
Part No: PPS448.v2Issued year: 2017File size: 0.53mbFile type: pdf
The TurboVap® 96 is a high speed concentrator designed to work with 96-well microplates and deep-well plates. It is an efficient alternative to the constant monitoring and long evaporation times that are characteristic of conventional techniques — with the added bonus of unattended operation.