PDA Technical Glossary
PDA Technical Reports are highly valued membership benefits because they offer expert guidance and opinions on important scientific and regulatory topics and are used as essential references by industry and regulatory authorities around the world. These reports include terms which explain the material and enhance the reader’s understanding.
The database presented here includes the glossary terms from all current technical reports. The database is searchable by keyword, topic, or by technical report. Each definition provided includes a link to the source technical report within the PDA Technical Report Portal.
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Flow-through
Effluent that may contain the product that is not retained by chromatography resin during column loading. (TR14)
Source:
HETP (Height Equivalent to the Theoretical Plate)
A measurement of column packing efficiency or integrity, calculated from the column height divided by the number of theoretical plates. (TR14)
Source:
Transition Analysis
Mathematical evaluation of the chromatogram tracing as the mobile phase changes from one solution to another. An alternative to HETP and peak asymmetry for evaluating column packing and performance. (TR14)