Introduction
A visible spectrophotometer is an analytical instrument that measures the absorption of visible light by a sample, in the wavelength range of approximately 380 to 780 nanometers, and it is used for quantitative analysis in chemistry, biology, biochemistry, clinical, food, environmental, and educational laboratories. In operation, light from a tungsten-halogen lamp passes through a monochromator or filter, which selects a specific wavelength, and then through the sample in a cuvette; the instrument measures the intensity of the transmitted light relative to the incident light and calculates the absorbance, which is related to the concentration of the colored species by the Beer-Lambert law, and the measurement is made at the wavelength of maximum absorption of the colored compound or after color development with a reagent. Visible spectrophotometers are used for measuring the concentration of colored solutions, for colorimetric analysis of metals, nutrients, and other analytes, for determining the concentration of proteins and other biomolecules after colorimetric reactions, for measuring color intensity in food and beverages, for water and wastewater analysis, such as phosphate, nitrate, and iron, for pharmaceutical analysis, for clinical chemistry tests, and for educational purposes, and they are available in various configurations, including filter-based instruments, scanning instruments with monochromators, and compact and portable models, with features such as digital displays, wavelength selection, and data output. With their simplicity and versatility, visible spectrophotometers are essential instruments for colorimetric and quantitative analysis.
Visible Spectrophotometer LVS-T2012
Visible Spectrophotometer operates with a wavelength range of 320 to 1100 nm, ensuring accurate spectral analysis. It operates with a 2 nm bandwidth and ±0.5 nm accuracy for reliable me...
Visible Spectrophotometer LVS-T2010
Visible spectrophotometer comes with large memory space which can store multiple sets of data & curves. With wavelength range of 320 ~ 1100 nm, standard curve for quantitative measuremen...
Visible Spectrophotometer LVS-T2011
Visible spectrophotometer comes with large memory space which can store multiple sets of data & curves. With wavelength range of 320 ~ 1100 nm, standard curve for quantitative measuremen...
Visible Spectrophotometer LVS-T2010
Visible Spectrophotometer comes with large memory space which can store multiple sets of data. It comes with monolithic, microprocessor controlled standard curve for quantitative measure...
Visible Spectrophotometer LVS-T2016
Visible Spectrophotometer a reliable analytical instrument designed to measure absorbance across the visible spectrum. It features a precision lead‑screw wavelength drive, ensuring exce...
Visible Spectrophotometer LVS-T2015
Visible Spectrophotometer is designed for visible spectrum analysis across a wavelength range of 325 to 1000 nm. It features an advanced microprocessor control system to ensure stable pe...
Visible Spectrophotometer LVS-T2014
Visible Spectrophotometer is a high-performance instrument with a wavelength range of 325 to 1000nm. It features a large is widely used in laboratories, clinical, pharmaceutical, food, a...
Visible Spectrophotometer LVS-T2013
Visible Spectrophotometer features spectral bandwidth of 2.0 mm, ensuring precise and consistent performance. Its built-in timer function allows programmed operation for automated and co...
Visible Spectrophotometer LVS-T2042
Visible Spectrophotometer operates at wavelength range of 325nm to 1000nm with spectral bandwidth of 4.0 mm ensuring reliable absorbance measurements. Integrated with high-precision opti...
Visible Spectrophotometer LVS-T2041
Visible Spectrophotometer features an extended 325-1100 nm wavelength range, enhancing spectral analysis versatility. It has an automatic wavelength setting with a 0.1 nm minimum resolut...
Visible Spectrophotometer LVS-T2040
Visible Spectrophotometer operates within a 325 to 1000 nm wavelength range for accurate spectral analysis. It ensures ±2 nm wavelength accuracy, enhancing measurement reliability acros...
Visible Spectrophotometer LVS-T2021
Visible Spectrophotometer is a compact, single-beam unit with a wavelength range of 325 to 1000 nm. Its sample compartment supports 5 to 50 mm cuvettes. It features a 7-inch multicolour ...
Visible Spectrophotometer LVS-T2012
Visible Spectrophotometer offers a wide wavelength range of 340 to 1000nm with a spectral bandwidth of 5nm. Features a high-quality silicon photodiode detector and a 1200 lines/mm diffra...
Visible Spectrophotometer LVS-T2030
Visible Spectrophotometer is single beam, blazed holographic optical system with 320 to 1100 nm wavelength range, and offers spectral bandwidth of 2.0 nm. Designed with Designed with hol...
Visible Spectrophotometer LVS-T2020
Visible Spectrophotometer is single beam bench top device with 340 to 1000 nm wavelength range, and offers spectral bandwidth of 5 nm. Features with T, A, C photometric working mode and ...
Visible Spectrophotometer LVS-T2010
Visible Spectrophotometer operates within a wavelength range of 320 to 1020 nm, ensuring precise analysis. It has a spectral bandwidth of 5 nm. A high-quality silicon photodiode detector...
Visible Spectrophotometer LVS-T2011
Visible Spectrophotometer operates for a wavelength range of 320 to 1020 nm which can be adjusted manually from the dial on the front panel. It is equipped with advanced and optical syst...
Standards
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
USP General Chapter <857>-Ultraviolet-Visible Spectroscopy
Complies with the above standards, but is not limited to them.
Features
1. Visible spectrophotometer for absorbance measurement in the visible wavelength range.
2. Simple, reliable design with wavelength selection for routine colorimetric analysis.
3. Suitable for chemical, biological, food, environmental, educational and quality control.
4. Includes light source, filter or monochromator, sample compartment, detector and display.
5. Supports concentration measurement, colorimetric assays and routine quantitative analysis.
FAQ
Q1: What testing scenarios is this spectrophotometer mainly applied to?
A: The visible spectrophotometer is used in chemical analysis, biological research, food testing, environmental monitoring, educational institutions, clinical laboratories and quality control to measure the absorbance of samples in the visible wavelength range (approximately 340-1000 nm) for qualitative and quantitative colorimetric analysis. It supports chemical compound concentration determination via color reactions, protein and enzyme assays in biological laboratories, food color and additive measurement, environmental pollutant analysis, educational chemistry and biology experiments, and clinical diagnostic colorimetric tests. The visible range design provides a simple, cost-effective platform for routine colorimetric analysis, making it ideal for teaching and standard analytical applications where UV measurement is not required. It is essential for chemical, biological, food, environmental and educational laboratories requiring routine visible absorbance measurement for quantitative analysis, colorimetric assays, quality control, educational experiments and research, where the visible wavelength range provides sufficient measurement capability for many colorimetric methods based on Beer-Lambert law, supporting chemical analysis, life science, food testing, environmental monitoring and educational applications requiring accurate, reproducible absorbance measurement in the visible spectrum.
Q2: What standards does the spectrophotometer comply with?
A: The visible spectrophotometer supports methods referenced in USP, EP and ChP monographs, ASTM E169 for UV-Vis quantitative analysis, ISO standards, and relevant GB/T standards. The hardware complies with IEC 61010 laboratory safety standards. Wavelength and absorbance accuracy should be verified with certified reference materials. For visible-only instruments, calibration should cover the visible range.
Q3: What is the warranty period for the whole machine and key components?
A: The whole visible spectrophotometer is covered by a 12-month warranty. The light source, optical system, detector, controller and display are covered, while lamps, cuvettes and calibration standards are consumables excluded from warranty. Damage from improper use or unauthorized repair is excluded. Extended service contracts are available.
Q4: Is this device difficult to operate? Is professional training required?
A: Operation requires trained analysts familiar with spectrophotometric principles, sample handling and data interpretation. We provide operation manuals, training and application support. Proper wavelength selection, blank correction, sample handling, calibration and result interpretation are important for accurate analysis.
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 recommended every 6-12 months. Routine verification before each analytical batch for regulated work. Light source replacement per usage hours. Full system performance verification annually. Sample compartment and optics cleaned per manufacturer schedule.
Q7: Are supporting consumables universal?
A: Lamps, cuvettes and calibration standards are available from multiple qualified suppliers. Long-term consumable cost is moderate depending on usage and light source type.
Q8: Can I customize parameters or supporting accessories?
A: Customization includes wavelength range, resolution, detector type, sample compartment accessories, software features and automation. 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 visible spectrophotometer and accessories with an operation manual. On-site installation, calibration and training are not included for standard orders but can be arranged for quality control laboratory setup. Remote guidance is provided.
Q10: What types of samples are compatible with this equipment?
A: The visible spectrophotometer analyzes liquid samples in cuvettes within the visible wavelength and absorbance range. Samples must be clear and homogeneous; turbid samples cause scattering errors. Glass or plastic cuvettes can be used for visible measurements (quartz not required for visible-only). Very high absorbance samples should be diluted to the linear range. Users should select appropriate wavelength for the analyte, use matched cuvettes, perform proper blank correction, calibrate with certified standards, allow lamp warm-up, verify wavelength accuracy regularly, and follow Beer-Lambert law principles for quantitative analysis. The instrument should be allowed proper warm-up time before measurement for stable results, and baseline correction should be performed for accurate measurement.
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