Features:
* LCD Display
* Photoelectric test and microcomputer control.
* Preheating is not needed. (Only for BK-P1 and BK-P2 Model)
* Dark-colored sample can be measure. (Only for BK-P1 and BK-P2 Model)
* Automatic repetition-measurement for 6 times, and calculation of average value and means square root
* Sample chamber adopts constant temperature designing in order to reduce the temperature heating influence.