If your workflow requires the use of the following reagents, contact Thermo Fisher Scientific Technical Support for advice.

Limit the type of reagents you use, if possible:

  • Because it reacts with the PEEK material, do not use tetrahydrofuran (THF).
  • Because these might cause corrosion of the API source, do not use the following:
    • Alkali-metal bases, such as sodium hydroxide (NaOH)
    • Inorganic acids, such as hydrogen chloride (HCl), phosphoric acid (H3PO4), or sulfuric acid (H2SO4)
  • Because these reagents can suppress ionization, do not use the following:
    • Detergent solutions
    • Nonvolatile buffer solutions, such as borate, citrate, or phosphate
    • Surfactants or other surface-active agents, such as polyethylene glycol (PEG), sodium dodecyl sulfate (SDS), or Triton™ X-100
    • Trifluoroacetic acid (TFA) at concentrations (volume/volume %) greater than 0.1