Can whiteness meter LWM-A11measure other properties?

Yes. Labtron’s whiteness meter LWM-A11 double as spectrophotometers, measuring brightness (reflectance at approximately 457?nm), opacity, transparency, and chromaticity. Advanced units also derive absorption/scattering coefficients and quantify OBA content per ISO 15397. Portable models support data logging and pass/fail functionality, enabling more comprehensive quality control in paper, textile, plastic, food, and construction material industries.

What factors affect measurement accuracy of whiteness meter LWM-A11?

Labtron supplies advanced whiteness meter LWM-A11.Measurement accuracy can be influenced by surface characteristics—glossy or uneven textures reflect light unpredictably—and ambient light interference. Sample preparation, including cleanliness and orientation, can also introduce variation. Instrument drift due to lamp aging or sphere discoloration can cause baseline shifts. UV-filter control is vital when measuring fluorescent materials. To ensure consistent results, use controlled environments, clean optics, and adhere strictly to standard measurement geometries and protocols.

How do I choose the right whiteness meter?

Labtron supplies advanced whiteness meter LWM-A11.Selecting an appropriate whiteness meter depends on your application. Choose a model designed for your material type—paper, textiles, plastics, or powders. Confirm support for relevant standards (ISO 2470/2469, ASTM E313, CIE). For fluorescent materials, ensure UV filter control. Match instrument geometry (45°/0° or integrating sphere) to sample type. Consider whether a portable handheld device or benchtop system suits your workflow. Review features like data storage, connectivity, connectivity (USB/Bluetooth), and durability to ensure a tool that aligns with your quality-control needs.

Can whiteness meter LWM-A11 be integrated into production lines for inline measurement?

Yes, Labtron supplies advanced whiteness meter LWM-A11.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.

How do I prepare powder or granule samples for whiteness testing?

Labtron supplies advanced whiteness meter LWM-A11. 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

Whiteness Meter LWM-A11

Name: Whiteness Meter LWM-A11
Brand: Labtron
SKU: LWM-A11
Rating: 5 (951 reviews)

Whiteness Meter LWM-A11 offers an incidence angle of 45/0, capturing both color and surface appearance for visually accurate whiteness readings. It has a moisture-resistant design for reliable operation in humid or damp environments. The system applies a blue-light whiteness formula to accurately measure brightness with consistent alignment. Our whiteness tester features a long-lasting light source, ensuring consistent measurement accuracy over the device’s operational lifetime.

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Incidence Angle	45/0
Measurement Range	0 to199.9
Whiteness Formula	Whiteness of Blue Light
Light Source	D65
Repeatability	0.2
Power Supply	1.5V AA
Weight	300 g

Fluorescent Whiteness Measurement
Calibrated White Board
Quick Measurement Cycles
Pocket-Sized Portability
Low Power Consumption

Whiteness Meter LWM-A11 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.

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Models of Paper Testing Instruments

Labtron Paper Testing Instruments requires air supply for automatic clamping, ensuring smooth and secure operation. These provide real-time pressure curve displays, allowing users to monitor pressure changes instantly. Their over-range reset function protects the sensor by automatically adjusting it in case of excessive readings. They measure ink absorption values, useful for quality control in printing processes. Our paper testing instruments measure WH Hunter whiteness, YI yellowness, and CIE whiteness for precise color and whiteness evaluations for various applications.

Pulp beating (refining) freeness tester TP-C10

Measurement range : 0 to 100° SR
Sealed testing speed : 100 ± 10 mm/s
Volume of distilled water : 1000 ± 5 ml
Draining time : 149 ± 1 s

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Internal Ply Bond Tester TP-J11

Measuring Range : A file: 20 to 500 J/m² B file: 500 to 1000 J/m²
Specimen Size : 25.4mm × 25.4mm
Sample Clamping Force : 0 to 400N (adjustable)
Impact Angle : 90°

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Electronic Tearing tester TP-J21

Capacity : 10 -16000 mN
Resolution : 0.1 mN
Tearing arm : 104 ± 1 mm
Tearing angle : 27.5° ± 5°

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Electronic Tear Tester LET-A10

Measuring Range : 10 to 64000 mN
Power of Resolution : 0.1 mN
Test Accuracy : ± 1%
Tearing Force Arm : 104 ± 1 mm

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Digital Paper Thickness Tester TP-E30

Measuring range : 0 to 5 mm
Division value : 0.001 mm
Measuring parallelism : ≤ 0.002 mm
Indication error : ± 0.0025 mm or ± 0.5 %

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Ink Rub Tester LIRT-A10

Sample Area : 230 × 60 mm
Friction Stroke : 60 mm
Frequency Setting : 0 to 9999 auto-complete
Friction Area : 150 × 50 mm

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Water absorption tester- Cobb Tester TP-C21

Metal Cylinder inner area : (100 ± 0.2) cm2
Metal Cylinder height : 50 mm
Metal roller width : (200 ± 0..5) mm
Metal roller weight : (10 ± 0.5) kg

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COBB sample cutter TP-C30

Sample diameter : 125 mm
Sample error : ± 0.2 mm
Sample Thickness : 0.1 to 1.0 mm
Dimension : 240×288×435 mm

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Whiteness Meter LWM-A11 FAQ's

Yes. Labtron’s whiteness meter LWM-A11 double as spectrophotometers, measuring brightness (reflectance at approximately 457?nm), opacity, transparency, and chromaticity. Advanced units also derive absorption/scattering coefficients and quantify OBA content per ISO 15397. Portable models support data logging and pass/fail functionality, enabling more comprehensive quality control in paper, textile, plastic, food, and construction material industries.
Labtron supplies advanced whiteness meter LWM-A11.Measurement accuracy can be influenced by surface characteristics—glossy or uneven textures reflect light unpredictably—and ambient light interference. Sample preparation, including cleanliness and orientation, can also introduce variation. Instrument drift due to lamp aging or sphere discoloration can cause baseline shifts. UV-filter control is vital when measuring fluorescent materials. To ensure consistent results, use controlled environments, clean optics, and adhere strictly to standard measurement geometries and protocols.
Labtron supplies advanced whiteness meter LWM-A11.Selecting an appropriate whiteness meter depends on your application. Choose a model designed for your material type—paper, textiles, plastics, or powders. Confirm support for relevant standards (ISO 2470/2469, ASTM E313, CIE). For fluorescent materials, ensure UV filter control. Match instrument geometry (45°/0° or integrating sphere) to sample type. Consider whether a portable handheld device or benchtop system suits your workflow. Review features like data storage, connectivity, connectivity (USB/Bluetooth), and durability to ensure a tool that aligns with your quality-control needs.
Yes, Labtron supplies advanced whiteness meter LWM-A11.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.
Labtron supplies advanced whiteness meter LWM-A11. 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