What you need to know before using the sprectrophotometer …
Calibrate your spectrophotometer!
To get reproducible measurement results a calibration of the device is needed. Therefor a certified white standard (for example from the PTB Physikalisch-Technische Bundesanstalt) as well as a black reference is needed to use. It is important to keep the surface of the calibration standards clean and free from any dirt or scratches. If the device is used regulary, we recommend a daily calibration or before starting with measuring large series.
Keep same measurement conditions!
Measuring conditions should always be constant.
Measuring conditions should always be constant to have reproducible values a description how to measure colours for your employees. It should consider the following parameters:
- Choosing different measurement spots to have middle values
- The measurement opening must be covered completely
- Room temperature
- Ambient light
- Background by translucent probes
- Curved probes are always measured on the same area