AELAB WM-206 Whiteness Meter for Blue Light R457 Reflectance Measurement

The AELAB WM-206 Whiteness Meter performs direct measurement of blue light whiteness values for objects and powders with flat surfaces. Designed for laboratory and industrial environments, the AELAB WM-206 applies the R457 whiteness formula and photoelectric detection to quantify surface reflectance with high precision.

Using a long-life LED light source at 457 nm and a corrected optical filter system, the AELAB WM-206 ensures stable, repeatable, and standards-compliant whiteness measurement across textiles, paper, plastics, building materials, and chemical products.

⚙️ Design & Construction

The AELAB WM-206 Whiteness Meter integrates a compact optical system, detection module, data processing unit, and digital display into a single robust enclosure. The optimized optical path and corrected filter system quantitatively reflect surface whiteness while ensuring long-term measurement stability.

🔬 Working Principle / Testing Method

The AELAB WM-206 Whiteness Meter operates using the photoelectric measurement principle. An LED light source at 457 nm illuminates the sample under a 45°/0° geometry. The diffuse reflectance radiant brightness energy is received by the optical cell, amplified through a high-precision auto-zeroing amplifier, calibrated via an internal energy circuit, and directly displayed as the R457 whiteness value.

💡 Key Advantages

• Direct blue light whiteness measurement using R457 formula
• LED 457 nm illuminant compliant with JJG 512-2002 regulation
• No preheating required after startup
• High repeatability ≤0.1% for quality control
• Memory capacity of 254 measurement data groups
• Compact integral-type design for laboratory and field use
• Stable performance with low zero drift ≤0.1%

🔗 Connectivity & Integration

• USB data output for PC connection
• RS-232 data output with optional software
• Optional Bluetooth data output for wireless transmission
• Supports data management for GLP documentation

🧠 Model Insight

🧪 Testing Applications

The AELAB WM-206 Whiteness Meter is widely used for whiteness analysis in textile printing and dyeing, paper and cardboard production, plastic manufacturing, chemical building materials, white cement, ceramics, enamel, talc powder, starch, flour, salt, detergent, cosmetics, and other industrial and laboratory materials.

Compliance & Quality Assurance

The AELAB WM-206 Whiteness Meter conforms to JJG 512-2002 Whiteness Meter Verification Regulation and complies with GB3978, GB3979, GB7973, GB7974, ISO 2470, ISO 2471, GB8904.2, QB1840, GB2913, GB13025.2, GB1543, GB10339, GB5950, GB12911, and GB2409 standards. Each instrument undergoes strict inspection and calibration to ensure traceable, repeatable, and compliant measurement performance.