A brightness tester can be used for measuring the brightness, whiteness and yellowness of paper, cellulose and other materials like porcelain and plastic.

Many brightness tester devices can also measure different colors. brightness tester product stand out due to high levels of accuracy, easy handling, compact and ergonomic designs, and high-resolution displays.
It comes with a user manual and the necessary accessories. You also can order a variety of optional accessories to make your brightness testing efforts even easier.