Originally headspace analysis was only carried out with crimp neck vials due to the temperature reistance of the caps (aluminum with an appropriate septa type) and the gas tightness being expected by endusers to be the highest. However, with the success story of the CTC Combi PAL and identically constructed autosamplers that require magnetic caps for transportation, consumables startet to change.
Solutions for organic acid HPLC analysis - NUCLEODUR C18 OA
Solutions for PFAS HPLC analysis – NUCLEODUR PFAS and PFAS Delay
CHROMABOND QuEChERS mixes - suitable for many applications in food analysis
Extend the life of all of your HPLC columns with the Column Protection System
To get reliable analysis data, the sealing process of the sample vials needs to be reproducible. This is difficult to achieve with manual crimpers. Learn more about our range of electronic crimping tools that solve inconsistencies in crimp results.
Special HPLC delay column for PFAS analysis from MACHEREY-NAGEL
Special HPLC columns for PFAS analysis from MACHEREY-NAGEL
Its lipophilic backbone interacts with nonpolar hydrocarbon residues of the analytes while the linked hydrophilic groups interact with polar functional groups to provide enhanced retention.
Robotic sample preparation lines as well as some autosamplers are constructed that way that they lift and transport vials with a magnet the size of the vial’s cap. In these cases aluminum crimp or plastic screw caps cannot be used, as these materials won’t react to a magnet. Only metals like steel or tin will do so, however, they will also bear some problems that need to be considered.