Spectrophotomètre UV-Visible double faisecau DB-30 livré avec logiciel de pilotage

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Spécifications techniques

The next generation Halo DB-30 double beam spectrophotometer boasts superlative performance characteristics for applications demanding the utmost sensitivity by combining higher signal to noise ratios with minimal stray light. This warrants the Halo DB-30 suitable to many diverse fields and industries such as pharmaceutical, food, sanitation, environment, biology, agriculture, geology, mineral, petrochemical, optical, life science, education, manufacturing and many others applications.

Exceptionally Low Stray Light

The intricate but elegant and innovative optical pathway is engineered to deliver outstanding double beam performance characteristics, in particular stray light which achieves an impressive low 0.010%T. The outcome is an increase in the linearity of absorbance characteristics for most samples thus increasing the scope of analytical applications particularly at higher concentrations.

Spectral Features

The asymmetric monochromator with long focal length results in improved sensitivity. Furthermore, up to 6 slit widths are selectable and switchable (with the highest achievable resolution of 0.1 nm) thus allowing for the optimization of different applications.

Other specifications include an impressive wavelength accuracy of ±0.3nm, noise level 0.0003Abs (500nm), wavelength repeatability of ±0.1nm for the accuracy and reproducibility of analytical data and an absorbance range of –4 to +5 Abs for the analysis of high absorbance samples without the need for further dilution.

High Scan Speeds and Resolution

Select from 8 scan speeds starting at a high resolving 1nm/min. Coupled with the precise fine tuning of the photomultiplier tubes, a wavelength resolution of 0.1nm is maintained even at the fastest scan speed of 2,000 nm/min. 

Powerful UV Detective PC Control

The Halo DB-30 is PC controlled using the UV Detective software (included with the instrument). Refer to page 3 for further details on the UV Detective software. UV Detective can also operate optional accessories such as the sample sipper and 6-cuvette holder.

The UV Detective software is powerful but user friendly using Windows® XP or Windows® 7, as depicted in the process flow below

> Select Function (e.g. Photometry) > Set Method Parameters
> Auto-zero or Baseline
> Sample test

> Data processing
> Report Generation

Dual Lamp Advantage

By virtue of the long life, halogen tungsten and deuterium lamps, the Halo DB-30s wavelength range extends from 190nm – 900nm. Furthermore, the dual lamp system results in higher accuracy than corresponding xenon lamps. Lamp switching is automatic and selectable from a wavelength range of 325nm to 370nm.

Validation Functions

To ensure optimum instrument performance, self-diagnosis incorporating a number of parameters and wavelength calibration are automatically initiated upon start-up. Furthermore the Halo DB-30 and the UV Detective software is equipped with a GLP/GMP feature for analyses requiring validation and auditing. Parameters such as wavelength accuracy, wavelength reproducibility, bandpass, baseline flatness, baseline stability and noise level can be all validated and the audit report printed. 



Diffraction grating / Double beam

Wavelength Range

190nm - 900nm

Spectral Bandwidth

Selectable: 0.1nm, 0.2nm, 0.5nm, 1.0nm, 2.0nm, 5.0nm

Stray Light

0.010%T (220nm NaI, 340nm NaNO2)

Wavelength Accuracy


Wavelength Repeatability


Setting Wavelength

0.01nm increments

Photometric Accuracy (NIST 930D filter)

±0.002Abs (0~0.5Abs) ±0.004Abs (0.5~1Abs) ±0.008Abs (1~2Abs) ±0.3% T

Photometric Repeatability (NIST 930D filter)

±0.001Abs (0~0.5Abs) ±0.002Abs (0.5~1Abs) ±0.004Abs (1~2Abs) ±0.15% T

Measurement Modes

Abs, %T, Conc. E(S), E(R)

Photometric Range

Absorbance: -4 to +5

%T: 0% to 600%T

Conc: -9,999 ~ +9,999

E(S), E(R): 0 ~ 600

Wavelength Scan Speed

Selectable: 1; 5; 20; 120; 300; 1,000; 1,600; 2,000 nm/minute

Wavelength Slew Speed


Baseline Flatness

±0.001Abs (200~850 nm)

Baseline Stability

0.0004 Abs/hr (500nm, after 2 hours)

Noise Level

±0.0003 Abs (500nm)

Light Source

Tungsten-Halogen and Deuterium Lamps

Light Source Switching

Automatic switching, selectable from 325nm to 370nm



Instrument Control

PC with Windows® XP or Windows® 7 operating system


710(W) x 630(D) x 268(H) mm

Net Weight / Gross Weight

50kg / 56kg

Power Requirements

110-220V AC (50/60Hz), 300VA

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