UV Spectrophotometer

UV Spectrophotometer

  • Product Number:LD-UV7S
  • Product Difference:[Single UV] Repeatability: 0.1 nm; Accuracy: 0.3 nm

Product Introduction

This instrument integrates UV-Vis measurement capabilities into a compact housing. It features a single-beam C-T optical system and a photodiode (PD), with automatic switching between a deuterium lamp and a tungsten lamp, and a wavelength range of 190–1100 nm. Equipped with a 7-inch color capacitive touchscreen, it can independently perform routine photometric analysis, spectral scanning, quantitative analysis, and protein/DNA assays, making it ideal for laboratories that need to balance wavelength coverage with bench space. The instrument supports the export of all measurement data and reports.

It is suitable for laboratories with limited bench space that require coverage of both the UV and visible wavelength ranges, and can be used in routine testing scenarios such as water quality testing, food and beverage quality control, basic chemical analysis, agricultural testing, healthcare, and education. The instrument can be used for routine photometric measurements, quantitative analysis via standard curves, spectral scanning, time-resolved scanning, multi-wavelength measurements, and protein/DNA assays. It is capable of performing spectrophotometric analysis of water quality parameters—such as ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, total phosphorus, and total nitrogen—as well as certain air, exhaust gas, and soil parameters, in accordance with relevant standard methods. Its compact design and 7-inch touchscreen facilitate standalone operation and benchtop placement.

Product Features

  • Single-beam UV-Vis measurement system: Features a C-T monochromator, a 1200-line/mm holographic grating, and a photodiode (PD), with a wavelength range of 190–1100 nm. Automatically switches between a deuterium lamp and a tungsten lamp, supporting photometric measurements and spectral scanning in the UV and visible regions.

  • Wavelength and Photometric Performance: Maximum permissible wavelength error of ±0.1 nm (at 656.1 nm) and ±0.3 nm (across the entire wavelength range); maximum permissible transmittance error of ±0.3%T (0–100%T); transmittance repeatability of ≤0.1%T; stray light of ≤0.1%T.

  • Compact Design and Touchscreen Operation: Dimensions: 460 × 360 × 205 mm (W × D × H); weight: (14 ± 1) kg, making it easy to fit on a lab bench. Equipped with a 7-inch color capacitive touchscreen with a resolution of 1024 × 600, supporting both Chinese and English interfaces.

  • Multimode Analysis and Biological Sample Measurement: Supports photometric measurement, multi-wavelength measurement, spectral scanning, quantitative measurement, time-resolved scanning, and protein/DNA quantification. Equipped with automatic wavelength calibration, baseline correction, peak detection, and standard curve fitting functions, it can perform routine photometric analysis and record absorbance changes over time.

  • Full Data Export and Report Generation: The standalone unit supports exporting all measurement data and test reports via a USB flash drive and generates A4-format PDF reports.

  • Spectral Bandwidth Configurable on Demand: The standard configuration features a 2 nm spectral bandwidth, with optional specifications of 1 nm, 1.8 nm, and 4 nm available; users can select the appropriate configuration based on the bandwidth required by the measurement method.

  • Multi-Pathlength and Quadruple Holder Expansion: The standard configuration includes a 10 mm standard cuvette holder; optional adjustable pathlength holders are available to accommodate pathlengths ranging from 10 to 100 mm. Additionally, an optional manual slide-out quadruple holder is available to facilitate sequential switching between multiple cuvettes, accommodating different pathlengths and sample loading arrangements.

  • Lamp Replacement Without Calibration and Maintenance Management: No optical path recalibration is required after replacing the light source. The system supports recording of light source usage time, making it easy to track usage and schedule maintenance. The main unit supports Wi-Fi connectivity for software updates.

Product parameters

Parameter NameTechnical Specifications
Optical SystemSingle-beam, C-T-type monochromator
Grating1200 lines/mm holographic grating
DetectorPD photodiode
Light sourceDeuterium lamp + tungsten lamp, automatic switching
Wavelength Range190–1100 nm
Spectral Bandwidth2 nm (standard); 1 nm, 1.8 nm, 4 nm (optional)
Maximum permissible wavelength error±0.1 nm (656.1 nm); ±0.3 nm (full wavelength range)
Wavelength repeatability≤0.1 nm
Wavelength resolution0.1 nm
Scanning speed≤2000 nm/min
Wavelength scanning speed≤9,000 nm/min
Absorbance range–4.0 A to +4.0 A
Maximum allowable error in transmittance±0.3%T (0–100%T)
Transmittance repeatability≤0.1%T
Stray light≤0.1%T
100%T noise (@500 nm)±0.0005 A; ±0.1%T; ≤0.001 A; ≤0.2%T
0%T Noise±0.02%T; ≤0.05%T
Drift (@500 nm, 2-hour warm-up)≤0.2%T/h; ≤0.001 A/h
Baseline Flatness (@ 200 nm – 850 nm)±0.002 A
Display7-inch color capacitive touchscreen; Resolution 1024×600
Interface LanguageChinese/English
Measurement FunctionsPhotometric measurement, multi-wavelength measurement, spectral scanning, quantitative measurement, time-resolved scanning, protein/DNA quantification
Operating ModesStandalone operation; Supports PC-based control
Calibration and Data ProcessingAutomatic wavelength calibration, baseline correction, peak detection, calibration curve fitting
Data InterfaceUSB
Standalone Data ExportExport all measurement data and test reports via USB flash drive; PDF reports (A4 format)
Software UpdatesWi-Fi-enabled updates
Light Source Usage LogDeuterium lamp, tungsten lamp
No-adjustment light source replacementSupported
Standard cuvette holder10 mm standard cuvette holder
Optional cuvette holdersAdjustable pathlength holder (10–100 mm); Manual Push-Pull Quadruple Holder
Cuvette Specifications10 mm × 10 mm
Power Supply VoltageAC 220 V ± 22 V
Power Supply Frequency50 Hz ± 1 Hz
Power consumption≤110 W
Dimensions460 × 360 × 205 mm (W × D × H)
Weight(14±1) kg
Operating Temperature15–35 ℃
Operating Humidity30%–70% RH, non-condensing
Storage Temperature-10–60 ℃
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