Desktop Whiteness Meter Qiwei

The desktop whiteness meter from Qiwei measures the whiteness value by projecting a built-in light source onto the sample surface and detecting the intensity of the reflected light. It is used to measure the whiteness of materials such as paper and coatings, guiding production formulations and quality control.
Selection
When selecting, focus on ensuring the measurement aperture matches the sample size, and the calibration plate must come with a traceability certificate. Consider an instrument with repeatability error less than 0.2% and equipped with multiple whiteness formulas. The operation interface should be simple and user-friendly, and the sample stage must be flat and anti-slip.

Terms

Instruments

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 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

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

Using microcomputer control and high-quality imported components, Repeatability ≤ 0.02, can measure the blue light 457nm diffuse reflection factor and fluorescence whiteness F value, the optical path design is simple and reasonable to ensure accurate and stable measurement.

$ 656.00

Using LED Illuminant and 45/0 illumination conditions, Measurement range 0~ 199.9, Repeatability ≤ 0.3, Diffuse reflected light is collected through the integrating sphere and converted into electrical signals to accurately evaluate the material whiteness level.

$ 291.00

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

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

Measurement range is 0~ 199.9. Opacity of thin sheet material can be measured. Data storage query function is provided. Stability and repRoducibility are high.

$ 361.00

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

Measurement range is 0~ 199.9, Opacity of thin sheet material can be measured, Automatic calibration and Data storage function, Stability and repRoducibility are high, and system drift error is eliminated.

$ 507.00

Repeatability ≤ 0.02, equipped with LCD backlight LCD screen and touch keyboard, the optical path design is simple and reasonable, the measurement is accurate and stable, and the Illuminant life is long.

$ 538.00

Articles