Latest from our Knowledge Centre

• Technical Notes

  Screening for unknowns using GC-MS

  When a sample contains unknown compounds, the best place to start is with a general GC-MS method. This method should include a slow oven ramp with a long hold at the end, this will ensure that all of the sample is eluted
• Technical Notes

  Backflash: Causes, Impact and Prevention

  There are a variety of libraries available for different applications. SCION Instruments offers various libraries including NIST, Wiley and Pfleger/Maurer/Weber (PMW) with customisable libraries and the ability to automatically search in multiple libraries. The most commonly used library is NIST. For the

• Technical Notes

  Surrogate vs Internal Standards

  Reference Standards are samples of a known concentration of analyte(s). Standards can be used in the identification and confirmation of analytes. A series of standards at known concentrations can be used to produce a calibration curve which can be used for quantitative
• Technical Notes

  Contaminants in GCMS

  Contamination is often detected by observing unusually high background signals in the mass spectra. This contamination can originate from either the GC or the MS. Analyzing the specific contaminants makes it possible to trace the source of the contaminants. Certain types of
• Technical Notes

  Programmable Temperature Vaporizing (PTV) Injector Guide

  A PTV injector is similar to a Split/Splitless (SSL) injector as it is capable of operating in both split and splitless modes but it can be programmed for isothermal or variable temperature operations. It is compatible with a range of open tubular