Whiteness Meter LWM-T2012

Introduction

Whiteness meter features a low zero drift of ≤ 0.1 %, which ensures precise and reliable measurements even during extended operation and repeated testing. The compact, advanced circuit design ensures the accuracy and stability of measurement data. It measures (R457) whiteness and fluorescence whitening of the materials. Our whiteness meter is provided with light absorber to eliminate the influence of specular reflection of the sample.

This test equipment is designed to meet the rigorous requirements of modern laboratory operations, ensuring high precision, reliability, and ease of use for various experimental applications.

Applications

Whiteness Meter  quantifies a surface or powder’s whiteness by measuring blue-light reflectance. It plays a key role in ceramics, chemical material, printing inks and dyeing industries for ensuring uniform whiteness.

Specifications

Sample (size) length	Diameter ≥30 mm, Thickness ≤ 40 mm
System	D/0 lighting geometrical viewing conditions, diffuser diameter (d) 150mm, testing hole diameter 30mm
Light source	D65 as illuminating source
Zero drift	≤ 0.1 %
Indication drift	≤ 0.1 %
Indication error	≤ 0.5 %
Repeatability error	≤ 0.1 %
Mirror reflection error	≤ 0.1 %
Dimension (L*W*H)	360 × 264 × 400 mm
Net weight	20 kg
Power supply	220 V ± 10 %, 50 Hz

Features

Stimulated D65 illumination

D/0 Viewing Geometry

 Brightness Value Determination

Opacity Measurement Capability

Transparency Determination Function

FAQs

1. Can the measure the whiteness of powders?

It is fully capable of measuring the whiteness of a wide range of powders. It is designed to handle fine particulate samples and provides reliable and accurate readings under normal testing conditions. Specifically, powders with particle sizes approximately between 120 µm and 200 µm fall well within the operational capability of the instrument. However, samples that are exceptionally coarse—such as those resembling the size of rice grains or beans—may not yield accurate readings and are generally not recommended for whiteness measurement using this device.

2. Does the standard configuration of include calibration material?

Yes, the standard package of the Whiteness Meter includes calibration material. This material allows users to perform routine checks and adjustments to ensure measurement consistency and accuracy. You can use it to verify that your device is stable before conducting your whiteness measurements, even though a formal certificate is not provided.

3. Can whiteness meter be integrated into production lines for inline measurement?

Yes, It supplies advanced whiteness meter .These systems often feature conveyor integration or robotic positioning and provide real-time feedback for process control. Inline meters typically share core measurement principles with benchtop models but are ruggedized and designed for continuous operation. They include automated calibration routines, UV compensation, and centralized data logging to maintain quality without manual intervention—making them ideal for large-scale manufacturing.

4. How do user prepare powder or granule samples for whiteness testing?

It supplies advanced whiteness meter . For powders, starch, sugar, or granules, compaction into a tablet or insertion into a powder sample holder is required before measurement. Ensure homogeneous particle size and consistent packing density to avoid air gaps and uneven surface reflection. Many instruments specify sample mass (e.g., ??5?g) and container dimensions to standardize readings. Thorough shaking and leveling of the powder improves repeatability, and cleaning the aperture after each measurement prevents residual interference