Spectrophotometers general
Spectrophotometers measure light intensity in the UV-Vis range for the analysis of absorption and reflection. They are used across various industries and laboratory applications.
Product
Spectrophotometers general
Spectrophotometers measure light intensity in the UV-Vis range for the analysis of absorption and reflection. They are used across various industries and laboratory applications.
Suppliers
The following suppliers offer Spectrophotometers general products.
Suppliers enabled for requests
Brechbühler AG
Eppendorf Vaudaux AG
Hemotec GmbH
Huberlab AG
IGZ Instruments AG
Labgene Scientific SA
Mettler-Toledo (Schweiz) GmbH
Milian SA
Thermo Fisher Scientific (Schweiz) AG
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Guide and selection support
Spectrophotometers are used to precisely measure the light absorption or reflection of samples. Applications extend from analytical chemistry and color measurement to quality control in industry.
Important selection criteria include the wavelength range, measurement geometry (transmission or reflection), measurement accuracy, and ease of use. The sample material and specific requirements determine the appropriate design and features.
LabFinder provides orientation to the general spectrophotometer product category, with clear information on applications, variants, and selection criteria. This makes it easier to target and procure suitable measuring instruments.
Applications and Benefits
Spectrophotometers provide precise measurement of light intensity as a function of wavelength. They detect absorption or remission values within a spectral range that primarily covers ultraviolet to visible light. Typical applications include analysis of chemical and biological samples, color measurement in textiles, coatings, and printed products, as well as various quality control tasks for industrial materials. The measurement principle allows for the analysis of liquids, solids, and coatings alike.
Selection Criteria
Key factors in selecting a spectrophotometer are the accessible spectral range and the measurement geometry, which allows for either transmission or reflection measurements. Required wavelength accuracy, repeatability, and user-friendliness are also important. Additional considerations include analysis time, sample preparation, and the compatibility with specific sample types. Some applications may also require modular expandable software or interface support.
Variants and Measurement Principles
Spectrophotometers are available in different versions: Instruments for transmission measurements analyze the amount of light absorbed by transparent or translucent samples. Reflection spectrophotometers measure the amount of light reflected from the sample surface and are therefore suitable for opaque materials. The instruments also differ in the type of light source, optical system, and detector technology, influencing accuracy, stability, and application range.
Calibration and Maintenance
Regular calibration is necessary to ensure accurate results, often using standard references for light intensity and wavelength. Maintenance mainly involves cleaning optical components and checking the light source. Stable operation also requires software updates, and calibration protocols should be documented. Depending on the application, calibration intervals can vary.
Limitations of Application
Spectrophotometers are typically limited to the ultraviolet to visible spectral range and are not suitable for measurements in the infrared or other regions without special extensions. Samples must meet technical requirements for transparency, surface properties, and size; highly scattering or highly reflective samples may distort results. Complex sample mixtures are often only partially or not at all analyzable without supplementary methods.
Search Terms and Related Terms
Typical synonyms and keywords for this product category include spectrophotometry, spectrum photometer, UV-Vis spectrophotometer, light absorption, light reflection, remission measurement, transmission measurement, absorption spectra, and laboratory analytics for color and material testing.
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Frequently asked questions
How does a spectrophotometer work?
A spectrophotometer measures light intensity as a function of wavelength, by capturing either the light passing through a sample or the light reflected by it. This allows for quantitative determination of absorption or reflection.
What types of spectrophotometers exist?
Generally, a distinction is made between spectrophotometers for transmission measurements (absorption measurement) and reflection measurements. The instrument design and light sources vary depending on the application and sample type.
What factors are important when selecting a spectrophotometer?
Key factors are the wavelength range, measurement geometry (transmission or reflection), measurement accuracy, sample compatibility, as well as user-friendliness and maintenance effort.
What sample types are suitable for spectrophotometers?
Spectrophotometers can analyze liquids, plastics, metals, paper, textiles, coatings, and other materials, depending on device type and measurement principle.
What limitations do spectrophotometers have?
Limitations include the restricted spectral range (usually UV to visible light), insufficient suitability for highly scattering or reflective surfaces, and challenges with complex sample mixtures that may require additional analytical techniques.
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