Portable Fluorescence Whiteness Meter

Portable fluorescence whiteness meters measure the whiteness value by illuminating the sample with a built-in light source and detecting the intensity of reflected light and fluorescence. They are used for measuring the whiteness of materials such as paper and plastic, enabling rapid on-site assessment of product appearance consistency.
Selection
When selecting, consider that the measurement range should cover the whiteness range of the samples, and the instrument's precision must meet the testing requirements, with a simple and easy-to-read operation interface. Pay attention to the convenience of calibration and battery life to ensure stability for outdoor use. Match the instrument's optical configuration based on common sample types.

Terms

Standards

Instruments

Can measure ISO blue light whiteness and fluorescence whiteness, support powder whiteness measurement, Repeatability ≤ 0.02, built-in thermal printer, data can be cached and power-off protection, equipped with RS232 interface for easy communication.

$ 1051.00

Can measure ISO whiteness and fluorescence whiteness, Repeatability ≤ 0.02, support data cache and power-off protection, equipped with RS232 interface for easy communication, suitable for powder and flake samples.

$ 953.00

Using LED Illuminant, 45/0 illumination conditions, Measurement range 0~ 199.9, Repeatability ≤ 0.3, suitable for whiteness measurement of white objects or powders, easy to carry and on-site detection.

$ 393.00

With simulated D65 light source and a 150mm integrating sphere, it can complete fluorescence whiteness testing with one click, eliminating the need for manual switching. It features a dust-proof structure that effectively protects the optical system, ensuring accurate and stable measurements.

$ 1655.00

Using R457 whiteness formula, blue light whiteness and fluorescence whiteness can be measured simultaneously, Repeatability ≤ 0.3, Operating temperature 5~ 35 ℃, optical path design is simple to ensure measurement accuracy and Repeatability.

$ 432.00

Repeatability of 0.2 for measurement of diffuse reflection factor using 457 nm blue wavelength can detect Fluorescent Whitening Agent and calculate fluorescence whiteness value, which is suitable for surface whiteness analysis of various materials.

$ 554.00

Can measure ISO whiteness and fluorescence whiteness, equipped with diffuse ball diaMeter 150mm, test hole 19mm, support light scattering coefficient, absorption coefficient and other Optical inspection paraMeters, suitable for a variety of material surface whiteness analysis.

$ 1174.00

Using blue light whiteness R457 standard, Measurement range 0~ 100, Repeatability ≤ 0.5, Basis Weight can reflect fluorescent whitening effect and accurate measurement paper Opacity.

$ 654.00

Adopt LED Illuminant and 45/0 illumination conditions, measurement aperture Φ 15mm, resolution 0.1, Repeatability ≤ 0.3, AC-DC dual-use design is convenient for on-site rapid detection of whiteness value.

$ 233.00

It can measure the blue light diffuse reflection factor (R457) and fluorescence whiteness, use d/o illumination observation geometry conditions, test hole diaMeter 30mm, can analyze whether the material contains fluorescent whitening agent and measure a variety of Optical inspection coefficients.

$ 1348.00

Geometry conditions were observed using d/o illumination, and the diaMeter of the diffuse sphere was 150mm, which can measure the diffuse reflection factor of blue light and the fluorescence whiteness, and support Multi-ParaMeter analysis such as Opacity and light scattering coefficient.

$ 1300.00

Using 45/0 lighting conditions, Repeatability of 0.2, small size and light weight, support fluorescent whiteness measurement, one battery can be used continuously for more than 60 hours, moisture-proof design to adapt to harsh environments.

$ 385.00

R457 blue light whiteness formula and 45/0 illumination conditions, Measurement range 0~ 100%, Precision 0.1, Unique positioning structure and High Accuracy optical path system ensure measurement accuracy and Repeatability.

$ 322.00

Using microcomputer control and high-quality imported components, Repeatability ≤ 0.02, can measure the blue light 457nm diffuse reflection factor and fluorescence whiteness F value, the optical path design is simple and reasonable to ensure accurate and stable measurement.

$ 656.00

R457 blue light whiteness formula, Measurement range 0~ 199.9%, resolution 0.1, Basis Weight measurement of whiteness of fluorescent whitening objects and paper Opacity, suitable for a variety of materials surface flat samples.

$ 332.00

Articles

Use of Fluorescence Spectrophotometer in Measuring Excitation and Emission Spectra of Anti-Counterfeiting Fluorescent Inks
This article introduces the application of fluorescence spectrophotometry in the spectral measurement of anti-counterfeiting fluorescent inks, including instrument calibration, sample preparation, and methods for measuring excitation and emission spectra.
Sensitivity Enhancement of Dark Box UV Analyzers in Thin-Layer Chromatography Fluorescence Detection
This article explores how to enhance the sensitivity of dark box ultraviolet analyzers in fluorescence detection for thin-layer chromatography. Sensitivity is influenced by factors such as light source stability, wavelength accuracy, sample background, and ambient light.
Paper Whiteness Tester Measures CIE Whiteness
This article explains how a paper whiteness meter measures CIE whiteness. Whiteness is a crucial optical indicator for evaluating paper quality. Traditional methods rely on subjective judgment, while modern instruments provide objective data by simulating standard lighting conditions.
Principle and Application of Whiteness Meter in Measuring Coating Whiteness
A whiteness meter quantifies the whiteness of paint samples by simulating human perception of white, measuring the diffuse reflectance of light—particularly in the blue wavelength range—and converting it into a numerical whiteness value. It employs standardized optical configurations and mathematical models, such as the Ganz formula, to assess the brightness and chromaticity of coatings.
Calibration and Use of Paper Whiteness Tester
This article introduces the working principle, calibration process, operational steps, and factors influencing the measurement results of a paper whiteness tester. The instrument evaluates whiteness by measuring the reflectance of blue light from paper, and calibration requires the use of a standard whiteboard in accordance with relevant standards.
Spectrophotometric Determination of Sulfur Content by Ultraviolet Fluorescence Method
The determination of sulfur content by ultraviolet fluorescence spectrophotometry involves burning the sample to convert sulfur into sulfur dioxide, which is then excited by ultraviolet light to produce fluorescence for detection.
Key Technical Points for Determining Arsenic and Mercury in Water Using Atomic Fluorescence Spectrophotometry
This article introduces the key techniques for determining arsenic and mercury in water using an atomic fluorescence spectrometer. The experiment requires attention to safety precautions, regular maintenance of the instrument, and proper disposal of waste liquids.
Application of Whiteness Meter in the Evaluation of Paper Brightness and Visual Comfort
The whiteness meter quantifies the brightness and whiteness of paper by measuring its reflected light characteristics, following international standards such as ISO to ensure comparability of results. The brightness of paper affects visual comfort, and moderate whiteness can enhance the reading experience, but excessive whiteness may lead to fatigue.
Whiteness meter measures the whiteness of white pigments
This article introduces the standard method for measuring the whiteness of white pigments using a whiteness meter. Whiteness is an important optical indicator for evaluating the quality of white pigments, and a whiteness meter can provide objective measurements.
Phosphor films and quantum dot coatings are uniformly applied using a coating machine.
This article introduces the significance of phosphor films and quantum dot coatings in optoelectronics and display technologies, highlighting that their performance depends on the uniformity, thickness, and density of the coatings.