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  • Gas Chromatography in Environmental Analysis (.pdf)
    with sufficient. temperature) to separate a narrow boiling. information to select a proper column for. range of solutes. If the separation of low and. analysis of a particular site or a difficult. high boiling compounds is necessary,. sample. In the next section, we describe the. temperature programming
  • Supplying High Purity Gases (.pdf)
    Selecting the most effective source for high purity gases is a critical issue for laboratory managers. Zero Air and hydrogen are used for gas chromatography with flame ionization detection (GC-FID), and nitrogen is used for high performance liquid chromatography or gas chromatography with mass
  • How to Convert from Helium to Hydrogen as a Carrier Gas in Gas Chromatography (.pdf)
    . 99.9999% pure. 5. Consider adding Nitrogen generators and high quality air generators to eliminate cylinders. and the use of high-pressure gases in the laboratory. A schematic diagram for a typical. system using an inhouse generator is shown in Figure 4. Figure 3: Standard Configuration for a Single GC
  • Supplying High-Purity Gases: Making a Case for In-House Gas Generators (.pdf)
    Selecting the most effective source for high-purity gases is a critical issue for laboratory managers. Zero air and hydrogen are used for gas chromatography with flame ionization detection (GC-FID), and nitrogen is used for high-performance liquid chromatography or gas chromatography with mass
  • Analytical Testing of Pressure Sensitive Adhesive Constructions - What Can It Reveal?
    and structural in nature. The most common tests that are used for an initial "chemical " look at a PSA are: Fourier Transform Infrared Spectroscopy (FTIR). Differential Scanning Calorimetry (DSC). Gas Chromatography (GC). Liquid Chromatography or High Performance Liquid Chromatography (LC or HPLC). FTIR
  • Critical Leak Requirements in GC/MS, LC/MS and Analytical Instruments (.pdf)
    require. Valves with higher pressure. components that can withstand high. ratings will have better leak rate. speed, high flow, and repeated. • Surface Finishes. operations while offering precision. Sealing surface has a very large. control to ensure accurate test. effect on leak rate. Elastomers
  • Medical Device Link .
    Syringe filters, membranes, and holders in many configurations are designed and manufactured to optimize the performance of sophisticated high-resolution ultra-high-pressure liquid chromatography (UHPLC) systems. The sample-preparation devices can minimize column clogging. They exhibit low
  • Medical Device Link .
    ultrapure nitrogen or helium. This gaseous mixture then passes through a silica column. The column, which is inside a temperature-controlled oven, is packed with ground firebrick or diatomaceous earth that has been coated with a layer of a liquid that has a very high boiling point