3nh YS6060 Benchtop Spectrophotometer got Calibration Certificate of Reflectance and Transmittance from NIM (National Institute of Metrology).
Calibration Certificate of YS6060 Benchtop Spectrophotometer from NIM (National Institute of Metrology)
Calibration Certificate of YS6060 Benchtop Spectrophotometer-Transmittance
Calibration Certificate of YS6060 Benchtop Spectrophotometer-Reflectance