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: 4.9 (760 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.

Electronic bending stiffness tester TP-E10

Testing speed : 200° ± 20° / min
Test range : 1 to 10000 mN
Indicating Error : ± 1 %
Testing length : 5, 10, 15, 20, 25, 50 mm

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Water absorption tester TP-C20

Measurement range : 0 to 200 mm
Specimen size : 15×250 mm
Division value : 1 mm
Number of specimen holders : 5

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Vertical Tensile Tester LVTT-C10

Maximum Measuring Range : 1KN
Control Method : Full computer control mode, powerful software
Unit of Force : N, kN, gf, kgf, lbf, kP, tf(SI), tf (long)...
Unit of Length : Mm, cm, Inch, m, km, um..

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Puncture strength tester TP-J12

Measuring range : A (1 to 6) J indicating error ± 0.05 J B (1 to 12) J indicating error ± 0.05 J C (1 to 24) J indicating error ± 0.05 J D (1 to 48) J indicating error ± 0.05 J The indicating errors w.r.t measurement range of 20 to 80 %
Frictional resistance :
Pyramid dimension : Three sides: 60×60×60 mm, height 25 ± 0.7 mm, Arris edge fillet radius 1.5 ± 0.1 mm
Dimension : 800×470×840 mm

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Tensile Stiffness Tester TP-B10

Sample (size) length : 38×70 mm
Measuring range : (1-500) mN.m (divided into 7 small ranges)
Indication error : 0.02
Test speed : (200° ± 20°)/ min

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Ring Type Adhesion Tester LRAT-A10

Capacity (MAX) : 50N
Control Method : Full computer control mode, powerful software
Unit of Force : N、kN、gf、kgf、lbf、kP、tf(SI)、tf(long)...
Unit of Length : mm、cm、Inch、m、km、um...

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Edge And Ring Crush Tester LERCT-A10

Capacity : 200 kgf
Precision : ± 1%
Test Speed : 12.7 mm/min
Platen : Ø150 mm

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Softness tester TP-H10

Measurement range : 10 to 1000 mN
Division value : 1 mN
Accuracy : ±1%
Indicating error : ≤0.5

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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