Fluorescence Luminance Meter

The fluorescence brightness meter measures the intensity of fluorescence emitted by a sample after excitation with a specific wavelength light source. It is used to quantify the effectiveness of fluorescent whitening agents in materials such as paper and plastics, and to assess the whiteness and uniformity of products during quality inspection.
Selection
When selecting, consider matching the measurement aperture to the sample size, and ensure regular maintenance of the calibration whiteboard. Check the instrument's repeatability indicators to ensure compatibility with industry standards. The working environment should avoid strong light interference, and the operation interface must be simple and easy to read.

Terms

Standards

Instruments

Range up to 1 million cd/m ², 10mm and 20mm replaceable Probe, support instantaneous measurement, simultaneous display of real-time luminance values, MAX Maximum, MIN Minimum and Average, and stroboscopic measurement and Spectral Curve analysis.

$ 264.00

Imported high-luminance Illuminant and narrowband filter system, Optical inspection stability, measurement range 0~ 400NTU, Accuracy ≤ +/- 2% F. S, support data storage and USB interface upload.

$ 774.00

Imported high-luminance Illuminant and narrow-band filter system, Optical inspection stability ≤ 0.002A/20min, support users to calibrate Linear dispersion, the main cabinet is made of anti-corrosion ABS material.

$ 499.00

Infinity Optical inspection system, support for Brightfield, Fluorescence, Phase Contrast, Polarization Observation mode; equipped with six-hole converter with DIC slot and 100W mercury lamp light source, providing high-resolution images; autofocus system to maintain sample focal plane stability.

$ 28652.00

Equipped with a long working distance flat-field color difference elimination objective lens and four sets of fluorescence filters, it supports phase contrast observation and fluorescence switching, and the fretting grid value is up to 2 μm, which is suitable for clear imagery of living cells and liquid samples.

$ 10207.00

Full Chinese menu operation, high luminance LED backlight is easy to use in gray environment with rays of light, automatic sleep and automatic shutdown power saving design, lithium battery can work for 10 hours, support 360 ° measurement direction, store 600 sets of data.

$ 977.00

Continuous zoom range 7X~ 63X, working distance up to 110mm, equipped with Process Color LED fluorescence excitation assembly and hinged trinocular observation head, support a variety of fluorescence Observation modes.

$ 3268.00

Optical inspection fluorescence technology for measurement of dissolved oxygen, no polarization time, fast Response and not affected by Flow velocity; Built-in temperature sensor, Measurement range 0.00-50 mg/L, accuracy up to 1.5% +/- 0.01mg/L; Protection Rating IP68, suitable for harsh environments.

$ 3401.00

Optical inspection system with infinity, long working distance objective lens such as 10X0.25 working distance 4.3mm, swirl/spin swing-out concentrating system can observe high culture dishes without contamination, Modular fluorescence system is easy to adjust.

$ 10530.00

Using fluorescence measurement technology without replacing the diaphragm and electrolysis solution, Measurement range 0.000~ 20.00mg/L accuracy +/- 0.20mg/L, support 3000 sets of Data storage and interval timing measurement, IP57 Protection Rating.

$ 1033.00

Measurement range from 0.1 to 200000 Lux, Lux and FC Unit switch support, built-in MAX Maximum retention function, compact and easy to carry, ABS plastic housing to ensure durability.

$ 280.00

With three-speed range coverage 0.01-2000 0 Lux, Precision up to +/- (4% n + 5d), support for MAX Maximum latch function, powered by 4 AA batteries, operating Temperature range 0-50 ℃.

$ 535.00

Using 100,000 hours long life Illuminant with narrow band filter system, Optical inspection stability is less than 0.002A/20min, equipped with 16-bit microcontroller to ensure stable performance, support users to calibrate Linear dispersion.

$ 499.00

Imported high-performance long-life Illuminant and narrowband filter system, Optical inspection stability, high accuracy, repRoducibility ≤ +/- 2%, can save 10 standard Linear dispersion and 500 measured values, power failure is not lost.

$ 746.00

It adopts coaxial focusing mechanism with coarse fretting, with a fretting grid value of 2 μ m, equipped with 100W high voltage mercury lamp fluorescent epiphany illumination and 6V 20W halogen lamp transmission illumination, and supports B excitation light band 420~ 485nm and G excitation light band 460~ 550nm.

$ 2575.00

Articles

Use of Fluorescence Spectrophotometer in Measuring Excitation and Emission Spectra of Anti-Counterfeiting Fluorescent Inks
This article introduces the application of fluorescence spectrophotometry in the spectral measurement of anti-counterfeiting fluorescent inks, including instrument calibration, sample preparation, and methods for measuring excitation and emission spectra.
Sensitivity Enhancement of Dark Box UV Analyzers in Thin-Layer Chromatography Fluorescence Detection
This article explores how to enhance the sensitivity of dark box ultraviolet analyzers in fluorescence detection for thin-layer chromatography. Sensitivity is influenced by factors such as light source stability, wavelength accuracy, sample background, and ambient light.
Gloss meter measures the surface brightness of packaging film.
This article introduces the principle and method of using a gloss meter to measure the surface glossiness of packaging films. The gloss meter quantifies the specular reflection capability of a surface in gloss units by measuring the ratio of reflected light from the sample to that from a standard plate.
Spectrophotometric Determination of Sulfur Content by Ultraviolet Fluorescence Method
The determination of sulfur content by ultraviolet fluorescence spectrophotometry involves burning the sample to convert sulfur into sulfur dioxide, which is then excited by ultraviolet light to produce fluorescence for detection.
Key Technical Points for Determining Arsenic and Mercury in Water Using Atomic Fluorescence Spectrophotometry
This article introduces the key techniques for determining arsenic and mercury in water using an atomic fluorescence spectrometer. The experiment requires attention to safety precautions, regular maintenance of the instrument, and proper disposal of waste liquids.
Application of Whiteness Meter in the Evaluation of Paper Brightness and Visual Comfort
The whiteness meter quantifies the brightness and whiteness of paper by measuring its reflected light characteristics, following international standards such as ISO to ensure comparability of results. The brightness of paper affects visual comfort, and moderate whiteness can enhance the reading experience, but excessive whiteness may lead to fatigue.
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This article introduces the significance of phosphor films and quantum dot coatings in optoelectronics and display technologies, highlighting that their performance depends on the uniformity, thickness, and density of the coatings.