Vis Spectrophotometer VS-A30

The Visible Spectrophotometer VS-A30 is equipped with a single-beam, blazed holographic optical system covering a wavelength range of 320 to 1100 nm, and boasting a spectral bandwidth of 2.0 nm. It features a large LCD display (128 × 64 Dots) for easy curve visualization, along with high-quality grating, detector, and lamps. Operating in T, A, C work modes, it utilizes both Tungsten and Deuterium lamps (Pre-aligned). With its holographic blazed grating monochromator, this spectrophotometer ensures high wavelength accuracy, excellent monochromaticity, and minimal stray light. Renowned for its high accuracy, reproducibility, and measurement stability, it provides reliable and consistent readings.

Wavelength range320 to 1100 nm
Spectral bandwidth2.0 nm
Wavelength Accuracy± 0.8 nm
Wavelength Repeatability≤ 0.3 nm
Optical systemSingle beam, blazed holographic Grating (1200 lines/mm)
Photometric Range0 to 200 %T, -0.3 to 3 A, 0 to 9999 C
Photometric Accuracy± 0.002A (0 to 0.5A), ±0.004 A (0.5 to 1A), ±0.5 % T (0 to 100% T)
Photometric Repeatability≤ 0.001A (0 to 0.5 A), ≤0.002A (0.5 to 1A), ≤0.2 % T (0 to 100% T)
DetectorSilicon Photocell
Stray light≤ 0.1% T (220/360 nm)
Noise≤0.2 % T/3 min (250/500 nm, 0% T), ≤ 0.5% T/3 min (250/500 nm, 100% T)
Scan speedHigh, Medium, Low, Max. 2000 nm/minute
Baseline flatness± 0.003 A
Stability± 0.002 A/h (500 nm, 0A)
Sample compartmentAccommodates 5 to 100 nm Path length cuvette
LampsTungsten lamp & Deuterium lamp (Pre-aligned)
DisplayGraphic LCD (128 × 64 Dots)
Keyboard22 key Numeric membrane keyboard
Output PortUSB Port & RS232 Port
PrinterMini Serial Printer, PC printer
PC softwareOptional PC scanning software
Dimension490 × 390 × 280 mm
Power supplyAC 90 to 250 V, 50/60 Hz
Gross weight16 kg

  • Wavelength range: 330 to 1000 nm
  • Spectral bandwidth: 5 nm
  • C-T grating monochromator: 1200 lines/mm
  • Light source: 20 W, 12 V Tungsten lamp
  • 100% Transmittance calibration
  • High accuracy with digital wavelength display

Visible spectrophotometers find applications in various fields including quantitative and qualitative analysis, detection of impurities, and determination of functional groups. They are widely utilized across biochemical, environmental, food, medical, petrochemical, and other industries.


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