Introduction
A double beam UV-visible spectrophotometer is an analytical instrument used to measure the absorption and the transmittance of the light by the samples over the ultraviolet and the visible wavelength regions, with the double beam optical design, and it is used in the chemistry, the biology, the clinical, the pharmaceutical, and the many other laboratories. The double beam UV-visible spectrophotometer measures the absorbance of the light by the sample, with the light beam split into the sample beam and the reference beam, and the ratio of the intensities measured, which compensates for the fluctuations of the light source and the drift, providing the stable and the accurate measurements; the double beam UV-visible spectrophotometer consists of a light source, a monochromator, a beam splitter, the sample and the reference compartments, a detector, and a control and a data analysis system, and it provides features such as the wavelength scanning, the kinetic measurements, and the standard curve analysis; the double beam UV-visible spectrophotometer is used for the quantitative and the qualitative analysis, for the measurement of the concentration of the samples, for the analysis of the nucleic acids and the proteins, for the quality control, for the research, and for many other applications, and it is an essential instrument for the UV-visible analysis. Double beam UV-visible spectrophotometers are used in the chemistry and the biology laboratories, in the clinical laboratories, in the pharmaceutical industry, in the food industry, and for many other applications. With their double beam design, double beam UV-visible spectrophotometers are essential for the accurate absorbance measurements.
Double Beam UV/Visible Spectrophotometer T-UD-S2113
Double Beam UV/Visible Spectrophotometer T-UD-S2112
Double Beam UV/Visible Spectrophotometer T-UD-S2111
Double Beam UV/Visible Spectrophotometer T-UD-S2110
Double Beam UV/Visible Spectrophotometer T-UD-S2109
Double Beam UV/Visible Spectrophotometer T-UD-S2108
Double Beam UV/Visible Spectrophotometer T-UD-S2207
Double Beam UV/Visible Spectrophotometer T-UD-S2206
Double Beam UV/Visible Spectrophotometer T-UD-S2205
Double Beam UV/Visible Spectrophotometer T-UD-S2204
Double Beam UV/Visible Spectrophotometer T-UD-S2203
Double Beam UV/Visible Spectrophotometer T-UD-S2202
Double Beam UV/Visible Spectrophotometer T-UD-S2201
Double Beam UV/Visible Spectrophotometer T-UD-S2200
Double Beam UV/Visible Spectrophotometer T-UD-L2109
Double Beam UV/Visible Spectrophotometer T-UD-L2106
Double Beam UV/Visible Spectrophotometer T-UD-L2105
Double Beam UV/Visible Spectrophotometer T-UD-L2102
Double Beam UV/Visible Spectrophotometer T-UD-L2101
Double Beam UV/Visible Spectrophotometer T-UD-S2107
Double Beam UV/Visible Spectrophotometer T-UD-S2106
Double Beam UV/Visible Spectrophotometer T-UD-S2105
Double Beam UV/Visible Spectrophotometer T-UD-S2104
Double Beam UV/Visible Spectrophotometer T-UD-S2103
Double Beam UV/Visible Spectrophotometer T-UD-S2102
Double Beam UV/Visible Spectrophotometer T-UD-S2100
Double Beam UV/Visible Spectrophotometer T-UD-S2101
Standards
GB/T 26813-2010-Double-beam ultraviolet-visible spectrophotometers
European Pharmacopoeia 2.2.25-Spectrophotometry, ultraviolet and visible
ASTM E275-08(2022)-Standard Practice for Describing and Measuring Performance of Ultraviolet, Visible, and Near-Infrared Spectrophotometers
Complies with the above standards, but is not limited to them.
Features
1. Double-beam UV-visible spectrophotometer for high-accuracy absorbance measurement.
2. Dual-beam optical system automatically compensates for light source drift.
3. Wide wavelength range with high resolution for spectral scanning and analysis.
4. Suitable for pharmaceutical, chemical, environmental and research laboratories.
5. Software supports scanning, quantitation, kinetics and regulatory compliance features.
FAQ
Q1: What testing scenarios is this instrument mainly applied to?
A: The double-beam UV-visible spectrophotometer is used in pharmaceutical, chemical, environmental, food and research laboratories for high-accuracy qualitative and quantitative analysis by absorbance measurement in the ultraviolet and visible ranges. It supports drug content and impurity analysis, compound identification by spectral scanning, enzyme kinetics, nucleic acid and protein quantitation, water quality testing and method development. The double-beam design provides superior stability by continuously comparing sample and reference beams, automatically compensating for light source drift during long scans and kinetic measurements. It is the standard for regulated pharmaceutical quality control and research requiring the highest accuracy and reproducibility, particularly for spectral scanning, time-based kinetics and low-absorbance measurements where source instability would affect result quality.
Q2: What standards does the instrument comply with?
A: The instrument supports analytical methods referenced in USP, EP and ChP monographs, ASTM E169 for UV-Vis quantitative analysis, and relevant GB/T standards for spectrophotometry. The hardware complies with IEC 61010 laboratory safety standards. Electronic records may be configured for 21 CFR Part 11 compliance. Wavelength and absorbance accuracy should be verified with certified reference materials.
Q3: What is the warranty period for the whole machine and key components?
A: The whole spectrophotometer is covered by a 12-month warranty. The optical system, detector, light source and controller are covered, while lamps, cuvettes and calibration standards are consumables excluded from warranty. Extended warranty and service contracts are available.
Q4: Is this device difficult to operate? Is professional training required?
A: Operation requires trained analysts familiar with spectrophotometric principles and method execution. We provide structured training, operation manuals and application support. Routine measurement and scanning can be performed by trained operators with software guidance and standard operating procedures.
Q5: What is the typical lead-time for order delivery?
A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.
Q6: Is regular calibration required? What is the recommended calibration cycle?
A: Wavelength and absorbance calibration with certified reference materials is recommended every 6-12 months for accredited laboratories. Routine verification before each analytical batch is recommended for regulated work. Lamp replacement and optical alignment follow the manufacturer schedule.
Q7: Are supporting consumables universal?
A: Lamps, cuvettes and calibration standards are available from multiple qualified suppliers, though original lamps and optics are recommended for optimal performance. Long-term consumable cost is moderate.
Q8: Can I customize parameters or supporting accessories?
A: Customization includes wavelength range, resolution, detector type, sample compartment accessories and software modules. Additional accessories can be ordered separately. Custom orders extend delivery lead-time.
Q9: Does the purchase include on-site installation and commissioning service?
A: Standard delivery includes the spectrophotometer and accessories with an operation manual. Remote commissioning guidance is provided. On-site installation and training are not included for standard orders but can be arranged for laboratory setup projects.
Q10: What types of samples are compatible with this equipment?
A: The instrument analyzes liquid samples within the wavelength and absorbance range. Samples must be clear and homogeneous; turbid samples cause scattering errors. Highly corrosive samples require compatible cuvette material. Very high absorbance samples should be diluted to the linear range. The double-beam design requires proper reference cell placement and baseline correction for optimal performance. Users should allow lamp warm-up and perform system suitability verification before critical measurements.
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