Latest from our Knowledge Centre

• 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

• Technical Notes

  NIST library compound scoring GC-MS

  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

  EPA Methods for Organic Extraction of SVOCs from Solid Matrices

  When setting out to analyze a sample from a complex sample matrix such as soil it is important to understand what analytes you are targeting and how to prepare your sample so it is suitable for your analysis. A common scope for
• Technical Notes

  Environmental samples from air, soil and water

  Volatile organic compounds (VOCs) are organic compounds which volatilize at lower temperatures e.g. limonene, ethanol and formaldehyde. Semi-volatile organic compounds (SVOCs) are organic compounds which tend to be solid or liquid at lower temperatures e.g. pesticides, polycyclic aromatic hydrocarbons (PAHs) and polychlorinated