Sigma-Aldrich

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  • Supelclean™ ENVI™-18 SPE Tube

    Sigma-Aldrich

    Retention Mechanism: Reversed-phase Sample Matrix Compatibility: Aqueous solutions (drinking, ground, waste water) Polymerically bonded, octadecyl (17% C), endcapped Excellent for cleaning, extracting and concentrating pollutants from aqueous environmental samples Higher 17% C…

  • PEEK Tubing

    Sigma-Aldrich

    Polyetheretherketone (PEEK) tubing has become a popular replacement for stainless steel tubing in various places in the HPLC system. It is especially useful when contact between the sample and metal components must be avoided, such as when working with metal complexing agents or certain biochemical…

  • Supelclean™ ENVI-Florisil® SPE Tubes

    Sigma-Aldrich

    General Description Magnesium Silicate Retention Mechanism: Normal phase or Adsorption Sample Matrix Compatibility: Organic solutions Mesh: 100/200; Available with PTFE or stainless steel frits Tested for US Environmental Protection Agency (EPA) Contract Laboratory…

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