The outer diameter of standard microscope tubes is typically 25 mm or 30 mm.

Application of 25 mm and 30 mm tubes

  • 25 mm: Commonly used in older and standard microscopes
  • 30 mm: Used in newer Evident Olympus BX microscopes and super-wide tubes, allowing a larger field of view and increased light transmission

Tips when selecting a tube

  • Always check compatibility with your objectives and eyepieces
  • Choose a larger tube diameter for a super-wide field of view or improved light throughput