Let's get to know the benchtop whiteness meter

Benchtop whiteness meters are mainly suitable for whiteness measurement of objects or powders with flat surfaces, and can accurately obtain whiteness values
consistent with visual perception.

For objects treated with fluorescent brighteners, the whiteness value
after fluorescent brightening can be quantitatively reflected.

The opacity of the paper can be measured
accurately.

It can be widely used in textile printing and dyeing, paints and coatings, chemical building materials, paperboard, plastic products, white cement, ceramics, enamel, talc, starch, flour, salt, detergents, cosmetics and other substances of whiteness measurement
.

The instrument uses the integrating sphere to achieve the measurement of spectral diffuse reflectivity, and its optical principle is to use the blue light emitted by the semiconductor light source to directly enter the integrating sphere, and the blue light is diffusely reflected in the inner wall of the integrating sphere, and irradiated on the sample at the test port, and the spectrum reflected by the sample surface is received by the silicon photocell cell after the condenser, light bar, and color filter group are converted into electrical signals; Another silicon photocell receives the base signal
within the sphere.

The two electrical signals are amplified separately, and after being processed by the microcontroller, the system functions of automatic zero correction, working whiteboard calibration, and sample testing are realized, and the user can use the instrument very easily to conduct whiteness tests
of various samples.

Main feature A, with CAD computer auxiliary design, so that the instrument shape is more reasonable
.

B.
The use of low-loss switching power supply makes the reliability higher
.

C.
The use of components makes the work more stable and the service life is longer
.

D, the use of simple optical path design, the use, maintenance is simpler
.

E.
The modified color filter system can quantitatively reflect the whiteness value
after fluorescence whitening.

F.
The reasonable design of the specimen holder and the moving platform can avoid the leakage of
light from the measurement orifice.

G.
Using simple operation, the opacity
of the paper can be accurately measured.

H.
The national calibration whiteboard is used to transmit the correction value to make the measured value more accurate
.