digital whiteness meter bench-top whiteness meter bench-top digital whiteness meter whiteness testing equipment
SRWM-1B Whiteness meter
Whiteness degree of blue light Wb=R457
DC 7.5V/0.4 A power supply adapter; DC 1.5V 5 AA alkaline dry cells (alkaline dry cells NOT INCLUDED IN DELIVERY)
Energy efficient Small size Easy to carry Beautiful appearance good stability
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