The spectrophotometer, invented in 1940 by Arnold J. Beckman and collaborators, was the Beckman company's greatest discovery. Before this, the chemical analysis was cumbersome and late. At first the technology of the equipment was experimental, which led to constant redesign, along the way the hydrogen lamp was invented, which offered improvements.
Over time it was automated and the speed of response improved, gradually incorporating control and detection systems that have resulted in the current spectrophotometer.
The importance of color as a physical characteristic and quality in food have a relevant role related to food additives. Consumers prefer attractive-looking products, and color is the first thing they evaluate. Usually, dyes are used to highlight the natural color of foods or to return the color lost in chemical processes carried out for their preservation. However, color in foods is not just an aesthetic attribute.
The dyes can be of natural or synthetic origin, legally they are considered an additive. These substances belong to the group of additives that present the greatest differences in the legislation of the countries. Its use could generate situations that harm the health of the consumer, since the product may not be as expected, or in the worst case be toxic. In general, in the legal regulations of each country there are different requirements on the type of dye, the concentration and the declaration of the ingredient in the labeling, it is also mandatory to characterize the food by the permisology associated with marketing.
Spectrophotometry is an analytical technique that allows determining the concentration of a compound in solution. It is based on the principle that molecules absorb electromagnetic radiation and in turn that the amount of light absorbed depends linearly on the concentration. A spectrophotometer is used to measure the amount of light absorbed by a solution.
That is, spectrophotometry refers to the measurement of relative amounts of light absorbed by a sample, as a function of wavelength. It is characterized by its accuracy, sensitivity and its applicability to molecules of different nature (pollutants, biomolecules, among others) and aggregation state (solid, liquid, gas).
pectrometer is equipped with φ 8mm, φ 4mm, 1x3mm three measuring apertures, more adaptability, accurate...
Kalstein launched new product YR05503 45/0 Grating Spectrophotometer with 20mm Aperture for Traffic Signs...
Like establishing calibration curve, photometric measurement, quantitative measurement, spectral scanning...
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YR01863//YR01865 series are wide screen double beam spectrophotometer.They adopt double beam long light path design to ensure the stability and accuracy; They are the best choice of high quality spectrophotometers.
YR01863//YR01865 series double light path design can prevent circuit fluctuation and stray light to ensure stability of the instrument.
Multi functions like spectrum scanning, standard curve, kinetics, multi wavelength scanning, DNA/Protein testing can be operated directly on the pc.
YR01863//YR01865 series’ unique 520mm long light path design greatly improved resolution and the bandwidth can reach 0.5nm.
| Model | YR01863 | YR01864 | YR01865 |
| Optical System | Double Beam, 1200 Lines/mm Grating) | ||
| Wavelength Range | 190-1100nm | ||
| Bandwidth | 1.8nm | 1.0nm | 0.5, 1.0, 2.0, 4.0 nm |
| Wavelength Accuracy | ±0.1nm (D2 656.1nm), ±0.3nm @all range | ||
| Wavelength Repeatability | 0.1nm | ||
| Photometric Accuracy | ±0.2%T(0-100%T) | ||
| Photometric Repeatability | ≤0.1%T(0-100%T) | ||
| Photometric Range | -0.3-3A
0-200%T 0-9999C |
||
| Stability | ± 0.0003A/h @ 500nm | ||
| Baseline Flatness | ± 0.001A/h | ||
| Noise | ± 0.0005A | ||
| Stray Light | ≤0.03%T @ 220nm, 360nm | ||
| Data Output Port | USB | ||
| Printer Port | Parallel Port | ||
| Display | 320*240 Dots LCD | ||
| Lamps | Tungsten Lamp & Deuterium Lamp | ||
| Detector | Silicon Photodiode | ||
| Power Requirements | AC 220V/50Hz or AC 110V/60Hz | ||
| Dimension | 625*430*206mm | ||
| Weight | 32kg/32kg/34kg | ||
Spectrophotometry is an analytical technique that allows determining the concentration of a compound in solution...
The light beam of a spectrophotometer meets the projection of monochromatic luminescence to a sample...
A spectrophotometer is a laboratory equipment used to measure the absorbance of a sample, as a function...
A spectrophotometer is a piece of equipment used to measure the absorbance of a sample, as a function of the...
The importance of color as a physical characteristic and quality in food have a relevant role related to food ...
Food that reaches the consumer has already gone through a journey from the producer, packaging, distribution and...
The quality designation in the cosmetic industry, is composed of different variables. Among them, color is a very important...
A spectrophotometer is an analytical instrument that allows measuring in a sample the properties of reflectance or light transmittance, at different wavelengths of the visible spectrum, from 400 mm to 700 mm...
The spectrophotometer is an optical analysis instrument that allows projecting a beam of light through a sample and thus determining, identifying, and quantifying the absorbance or transmittance of energy. The amount of light absorbed or transmitted is proportional to the concentration of the material.
This difference is specific to certain species, so the equipment yields absorption spectra that are unique to each substance and are often used as a fingerprint. Spectrophotometric methods vary depending on the range of the working spectrum, they can be visible spectrum, UV and infrared.
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