Paperboard Whiteness Meter

The cardboard whiteness meter measures the light reflectivity of the sample surface using the principle of blue light diffuse reflection. It is used in the papermaking and packaging industries to detect the whiteness index of cardboard, guiding bleaching processes and quality control.
Selection
When selecting, focus on matching the measurement aperture with the sample size, verify that the instrument complies with the ISO 2470 standard, compare the repeatability errors of different models, confirm the traceability certificate of the calibration plate, and consider the adaptability to the temperature and humidity of the production environment.

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 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

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

Using LED Illuminant and 45/0 illumination conditions, Measurement range 0~ 199.9, resolution 0.1, can detect Fluorescent Whitening Agent and measure increased whiteness, Repeatability ≤ 0.3.

$ 417.00

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

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

R457 blue light whiteness measurement, Indication Error +/- 2.5, repeatability error ≤ 0.3, equipped with 10V/30W halogen tungsten lamp light source to ensure stable reflection performance detection.

$ 687.00

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

R457 blue light whiteness formula, Measurement range 0~ 100%, resolution 0.1, Repeatability ≤ 0.3, suitable for fluorescent whitening objects and paper Opacity measurement.

$ 490.00

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

Measurement time is only 1.5 seconds, Repeatability is less than R0.1, which can measure a variety of whiteness indicators and reflectance, and is suitable for the analysis of fluorescent whitening samples.

$ 800.00

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

Articles

Transverse Burst Strength Tester for the Evaluation of Impact Resistance of Corrugated Cardboard
This article explains how a lateral bursting strength tester is used to evaluate the impact resistance of corrugated cardboard. It measures the energy absorbed by the cardboard at the point of rupture using the pendulum impact principle, requiring the preparation of specimens according to standards and the control of environmental conditions during testing.
Short Span Compression Strength (SCT) Tester for Analyzing Paper Compression Resistance
The short-span compressive strength (SCT) tester is used to measure the resistance of materials such as paper and cardboard to compression over a short distance, primarily following international standards such as ISO 9895.
The Taber stiffness tester is used for measuring the bending stiffness of paperboard.
The Taber stiffness tester is used to measure the bending stiffness of paperboard. Its principle involves applying a known bending moment to the specimen and measuring its resistance to deformation. Bending stiffness is a key performance indicator of paperboard, affecting its processing suitability and packaging functionality.
Application of Paperboard Burst Strength Tester in Packaging Materials
The paperboard bursting strength tester is a detection device used to measure the ability of packaging materials such as paperboard to resist rupture under vertical pressure. During the test, the sample is clamped between annular clamps, and increasing pressure is applied via hydraulic or pneumatic means until rupture occurs. The maximum pressure value is recorded as the bursting strength.
Cobb Absorbency Tester Evaluates Paper Water Absorption Capacity
The Cobb water absorption tester is used to measure the water absorption capacity of paper or cardboard by simulating the liquid contact process and calculating the mass of water absorbed per unit area to determine the Cobb value.
Key Operation Points of Carton Burst Strength Tester
The carton bursting strength tester is used to measure the maximum force that paperboard can withstand before rupturing under uniform pressure, which is important for packaging quality control. Before operation, ensure that the instrument is stable and the calibration is valid. The samples should be cut according to standards and conditioned under standard temperature and humidity conditions.
Selection Guide for Paperboard Puncture Strength Testers
This article introduces how to choose a cardboard puncture strength tester. The tester is used to measure the ability of cardboard to resist impact penetration, and multiple aspects should be considered during selection. First, check whether the instrument complies with relevant testing standards, such as national or international standards.
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.
Correlation Analysis between Puncture Strength and Bursting Strength of Paperboard
This article analyzes the correlation between the puncture strength and burst strength of cardboard. The two properties respectively measure the ability of cardboard to resist dynamic impact and static pressure. Although their testing principles differ, both are closely related to factors such as the fiber structure and lamination process of the cardboard.
Selection Recommendations for Carton Compression Strength Testing Machines
When selecting a cardboard compression strength tester, the first step is to examine the core parameters, such as ensuring the force range covers the testing requirements with some margin, the accuracy is typically no less than ±1%, and the testing speed complies with standard specifications.
The role of the burst strength tester in the testing of cardboard packaging materials.
The burst strength tester is used to measure the bursting resistance of packaging materials such as cardboard. It applies uniform pressure through hydraulic or pneumatic means until the sample ruptures, recording the maximum pressure value to simulate compression and impact during transportation.
Water Absorption Tester in the Detection of Tissue Paper and Paperboard
This article introduces the application of water absorption testers in the testing of tissue paper and paperboard. The instrument evaluates the water absorption performance of materials by measuring the mass or height of liquid absorbed by the sample, with common methods including the Klemn method and the capillary rise height method.
The role of the puncture strength tester in evaluating the impact resistance of corrugated cardboard.
The puncture strength tester is used to test the impact resistance of corrugated cardboard, simulating scenarios where sharp objects suddenly impact during transportation. It measures the energy consumed during penetration by impacting the sample with a puncture head, reflecting the cardboard's ability to resist dynamic impacts.
The role of a bending stiffness tester in evaluating the rigidity and formability of cardboard.
The bending stiffness tester evaluates the rigidity and formability of cardboard by measuring its resistance to bending deformation. Based on the beam bending theory, it is tested under standard conditions, providing bending stiffness value as the core indicator.
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.