Optical (Light) Microscope
Magnifies particles so their size, shape and crystal habit can be seen and measured with a calibrated eyepiece graticule or camera. Used for particle size, morphology and identification checks.
- Pharmaceutical
- Microbiology
- Materials
- Food
- Forensics
- Education

Optical microscope calibration procedures
Optical microscope has no instrument calibration of its own in most labs. Its performance is controlled through qualification (below) and the system suitability or acceptance checks of each test that uses it.
Instrument qualification (DQ · IQ · OQ · PQ)
- 01
DQ — Design qualification
Defines magnifications, polarising capability, camera and software needs.
- 02
IQ — Installation qualification
Records components and serial numbers and checks assembly.
- 03
OQ — Operational qualification
Checks illumination, focus and graticule calibration with a certified stage micrometer.
- 04
PQ — Performance qualification
Confirms consistent sizing of a reference sample or graticule over time.
Keep every Optical microscope in control: usage logs, calibration and maintenance schedules, and automatic blocking of overdue instruments.