Post Archive

November 2016

Chromatography

Polymer Phases Already in the end of 80s polymer phases for SPE have been manufactured. One of the first polymeric sorbents, which was already used in column chromatography, is polyamide (PA). Polymer phases, based on polystyrene-divinylbenzene copolymers (PS/DVB) became important in environmental analysis, because new multimethods required a broad selectivity

Read More
Chromatography

Efficient SPE – Modern polymer and classical silica phases Solid Phase Extraction (SPE) is an effective method for sample preparation used in the most laboratories today. For nearly 30 years diverse SPE phases, packed in columns, cartridges and 96-well plates or as bulk material, are commercially available and will be

Read More
Chromatography

Demands on a modern column for an efficient and economical preparative HPLC To achieve a yield as high as possibly by overload, the column should have a high loadability. The highly selective and base deactivated NUCLEODUR® C18 HTec – especially developed for preparative applications – shows a considerably higher loading

Read More
Chromatography

  Criteria for an efficient and economical preparative HPLC Preparative HPLC is one of the most important methods for the efficient clean-up of chemical and biological substances from synthesis or extraction mixtures. It is used for separation of few milligrams of valuable end or intermediate products on the laboratory scale

Read More