Dual-Wavelength SpectroPhotoMeter

A dual-wavelength spectrophotometer simultaneously measures the absorbance of a sample at two wavelengths and eliminates the influence of interfering substances through difference calculations. It is used to detect trace components and analyze color in coatings and inks, as well as to monitor pollutants in the plastics and paper industries.
Selection
When selecting, consider the wavelength range and accuracy to match the sample characteristics; pay attention to baseline stability and noise levels; ensure ease of operation and maintenance costs; and determine whether automatic switching functionality is required based on the detection needs.

Terms

Standards

Instruments

Equipped with 254nm and 365nm dual-wavelength quartz ultraviolet lamps, support single or mixed use mode, integrated ordinary fluorescent lamp auxiliary lighting, the whole machine weighs only 3.7kg for easy operation and maintenance.

$ 146.00

Equipped with 254nm and 365nm dual-wavelength quartz ultraviolet lamps, which can be used alone or in combination, with 150 * 50mm filters and ordinary fluorescent lamps, the whole machine weighs 6.1kg, and the structure is simple and convenient for maintenance.

$ 214.00

Equipped with 254nm and 365nm dual-wavelength quartz ultraviolet lamps, support single or mixed use mode, integrated ordinary fluorescent lamps for point-like positioning, the weight of the whole machine is only 2.5kg for easy operation and maintenance.

$ 140.00

Wavelength range extended to 360-780nm for more accurate measurement. Repeatability up to 0.01, Inter-instrument Agreement only 0.12. Adopt xenon arc and LED dual Illuminant to ensure long life and stable measurement.

$ 5076.00

Wavelength range extended to 360-740nm, more accurate measurement. Inter-instrument Agreement only 0.12, Repeatability up to 0.01. With xenon arc and LED dual Illuminant, it provides ten million measurement life and supports six aperture adaptations to different samples.

$ 3785.00

Equipped with a large screen LCD graphic display, can accommodate 5-100mm Cuvette, wavelength Precision +/- 0.3nm, with automatic wavelength Adjustment, supports multiple test modes including Light spectrum scanning and kinetic testing.

$ 1397.00

Using 1200L/mm High Performance Grating and Imported Illuminant, Stray Light as Low as 0.03% T, Wavelength range 190-1100nm, Support Automatic Wavelength Setting and Multiple Measurement modes to Ensure High Accuracy and Stability.

$ 2575.00

Adopt standard double beam of light path structure, equipped with 1600L/mm high performance holographic blazing grating and imported photoelectric converter, wavelength Precision +/- 0.5nm, stray light ≤ 0.03% T, with Automatic calibration wavelength error function.

$ 4592.00

Adopt standard double beam of light path structure, equipped with 1600L/mm high performance holographic blazing grating, wavelength Precision +/- 0.3nm, stray light ≤ 0.03% T, with Automatic calibration wavelength error function, support a variety of data map processing.

$ 4914.00

Equipped with 254nm and 365nm dual quartz UV tubes, support single or simultaneous mixed use mode, integrated 150 × 50mm filter, the whole machine weight is only 1.4kg for portable operation.

$ 140.00

Adopt dual beam of light path structure and 1600L/mm holographic blazing grating, wavelength Precision +/- 0.3nm, stray light ≤ 0.03% T, equipped with color Touchscreen and special software, support a variety of data processing and comparison analysis functions.

$ 5883.00

Wavelength range extended to 360-780nm, more accurate measurement. Inter-instrument Agreement 0.12, Repeatability 0.01, indication Precision increased by 60%. Six measurement apertures are provided to adapt to different morphology samples.

$ 7496.00

1200L/mm High Accuracy Grating and proportional dual beam of light paths, stray light as low as 0.03% T, equipped with automatic octagonal cell sample holder and 7-inch Touchscreen, support multi-wavelength and kinetic testing.

$ 2494.00

Large screen LCD graphic display, Wavelength range 325~ 1100nm, can accommodate 5~ 100mm Cuvette, support photometric detection and quantitative analysis, with Automatic calibration and ultra-low stray light, to ensure detection of linear Precision.

$ 929.00

Equipped with 254nm and 365nm dual wavelength quartz UV Lamp, can be used alone or in combination, integrated with ordinary fluorescent lamp auxiliary lighting, the whole machine weighs 1.4kg, is lightweight and easy to maintain.

$ 136.00

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.
UV spectrophotometer for measuring residual monomers in polymer solutions.
This article introduces a method for determining residual monomers in polymer solutions using ultraviolet spectrophotometry. The principle relies on the characteristic absorption of monomers in the ultraviolet region, calculating their content based on the relationship between absorbance and concentration.
UV-Vis-NIR spectrophotometer measures the transmittance of anti-reflection coatings.
This article introduces the method of measuring the transmittance of anti-reflective coatings using a UV-Vis-NIR spectrophotometer. The instrument is based on the Beer-Lambert law, calculating transmittance by comparing the light intensity of the sample and the reference, covering a wide spectral range from ultraviolet to near-infrared.
Determination of Transmittance of Resin Solutions Using UV-Visible Spectrophotometer
This article introduces the method of measuring the transmittance of resin solutions using a UV-Vis spectrophotometer.
UV-Vis Spectrophotometer Measures Ink Pigment Concentration
This article introduces the method of measuring the concentration of ink pigments using a UV-Vis spectrophotometer. The principle is based on the Lambert-Beer law, which calculates the concentration by measuring the absorbance of the pigment solution at specific wavelengths.
Application of UV Spectrophotometer in the Determination of Lignin in Pulp
This article introduces the application of ultraviolet spectrophotometry in determining the lignin content in pulp. Lignin is a key component affecting pulp quality. This method utilizes the characteristic absorption of lignin under ultraviolet light for measurement, offering simple and rapid operation.
Difference between dual-beam and array spectrophotometers
This article aims to systematically elucidate the core differences between double-beam and array-type spectrophotometers in terms of working principles, optical structures, performance characteristics, and applicable scenarios, providing clear technical references for professionals in related fields.
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.
Application of Spectrophotometry in Heavy Metal Detection
A spectrophotometer detects heavy metal concentrations by utilizing the absorption of light at specific wavelengths by substances, following the principle of the Lambert-Beer law. During detection, heavy metal ions react with chromogenic agents to form colored complexes, and the concentration is determined by measuring absorbance and comparing it against a standard calibration curve.
Guide to Avoiding Pitfalls When Purchasing a Spectrophotometer
When selecting a spectrophotometer, it is essential to first understand its working principle based on the Lambert-Beer law, as this helps in assessing the rationality of the instrument's design.
Practical Application of Spectrophotometer in COD, Ammonia Nitrogen, and Total Phosphorus Determination
This article introduces the practical applications of spectrophotometers in measuring key water quality indicators—Chemical Oxygen Demand (COD), Ammonia Nitrogen, and Total Phosphorus.
Application of UV-Visible Spectrophotometer in the Detection of Heavy Metals in Water
This article introduces the application of ultraviolet-visible spectrophotometry in the detection of heavy metals in water.
How to Choose the Right Spectrophotometer
When selecting a spectrophotometer, it is essential to start from the actual analytical needs, clearly defining the required wavelength range (ultraviolet, visible, or infrared) and the type of detection. Key evaluations should focus on core specifications of the optical system, such as wavelength accuracy, beam type, and stray light levels.