YQ-Z-48B Whiteness Testing Device | According to ISO Standards

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Application

The YQ-Z-48B Whiteness Tester is widely used to determine the whiteness of various objects such as paper and cardboard, pulp and chemical fiber, textiles, plastics, ceramics, enamel, fekül, salt, white ceramics, porcelain clay, and French chalk. It can also be used to determine the optical performance of sheet materials, for example, in opacity tests.

Standards

ISO 2470, 2471, 3688
GB/T 3978, 7973, 7974, 1543, 2679.1, 10339, 12911, 22427.6, 5950
JJG 48-2000
GB 2913, 13025.2

Features

This machine is used to measure the Blue Reflectance Factor (R457) of samples, analyze samples to determine if they contain any fluorescent brighteners, and also to measure opacity, transparency, light scattering coefficient, and light absorption coefficient.
It adopts computer control with test data statistics and processing functions, and can test the whiteness (brightness) of any kind of object.
It can perform multiple tests and provide the arithmetic mean of the test results.
Equipped with a shutdown protection function.

Technical Specifications

Model	YQ-Z-48B
Observation condition	D65
Lighting and observation system	d/0
Zero drift	≤0.1%
Indicator drift	≤0.1%
Indicator error	≤0.5%
Repeatability error	≤0.1%
Specular reflection error	≤0.1%
Sample Size	Test area: ≥Ø30mm Thickness: ≤Ø40mm
Test time	7 sec.
Power supply	AC220V ±10%, 50 Hz
Operating environment	Temperature: 0 ~ 40 °C Humidity: <%80 Relative Humidity
Dimensions	365mm x 260mm x 425mm (WxDxH)
Weight	11 kg