Progen Scientific says it constantly strives to bring customers the latest products in the laboratory equipment market place and is especially pleased to introduce this range of spectrophotometers
The three models in the range provide great functionality and a host of features designed for the modern laboratory.
The Halo RB-10 is a ratio beam spectrophotometer with an extensive array of built-in functions for versatility and suitability to many analytical and biological applications.
The ratio beam optics impart greater accuracy and reproducibility than the conventional, single beam optics.
The absorbance signal in conventional single beam instruments can destabilise even during simple applications thus resulting in data inaccuracy.
By contrast, ratio beam optics compensate and stabilise any signal fluctuations to increase accuracy and reliability even over prolonged usage such as in time course and kinetic measurements.
The ratio beam principle involves splitting the beam generated by the light source by a half mirror.
One of the split beams passes through the sample and is quantified by the detector whereas the other split beam, which is representative of the absorbance signal, is measured by an independent detector to obtain a signal reference.
The ratio of the values from both detectors is then calculated to detect and compensate for any aberration in the energy of the light source or a temporal change of the optical elements and produce the highly stable photometric values.
Boasting a 4nm spectral bandpass the Halo RB-10 promises superior spectra and peak resolution.
Other specifications include a wavelength accuracy of +/- 0.5nm, noise level 0.0005Abs (500nm) and stray light 0.05% (220nm NaI, 340nm NaNO2).
There are a range of built-in modes and diverse range of measurement modes.
Photometry mode: perform quantitative analyses in either absorbance or transmittance modes.
Select from single wavelength, up to six individual wavelengths, nucleic acid / protein A260/A280 ratios and set up calibration curves with up to 20 standards for concentration measurements.
Time scan: perform kinetic measurements for time periods ranging from one minute to >27 hours.
Measurement intervals are factory preset and automatically selected when the scan time is set.
Wavelength scan: perform a full spectral scan from 190 to 1100nm at any of eight incremental and preset selectable selectable scan speeds starting from a high resolution 10nm / minute up to a swift 3600nm / minute.
Data is displayed as either numerical values or a graphical spectrum.
Furthermore, perform downstream processing of data, such as peak / valley search or smoothing, directly on board or with the optional Halo UV detective software.
The Halo RB10-UV also has dual halogen tungsten and deuterium lamps typically found in higher end, analytical spectrophotometers, the Halo RB-10's wavelength range is an impressive 190 to 1100nm.
Furthermore, a dual lamp system results in higher accuracy then corresponding xenon lamps.
Lamp switching is automatic (by default at 340nm.) and both lamps are long life.
The Halo DB-20 is a high performance double beam spectrophotometer suitable for many analytical applications where a higher level of accuracy is required.
True double beam optics ensure concurrent measurement of the sample and reference for improved stability, accuracy and reproducibility.
The light beam is split in two using a half mirror so that one beam passes through the sample while the other passes through the reference side.
Both beams are then measured on individual detectors.
The reference side beam also acts to stabilise photometric values in a similar manner to the ratio beam principle.
The spectral features are coma aberration elimination from the concave diffraction grating achieves a high resolution 1.5nm spectral bandpass and certifies compliance of the Halo DB-20 to the stringent European Pharmacopoeia standards.
Other specifications include an impressive wavelength accuracy of +/- 0.3nm, noise level 0.0003Abs (500nm) and stray light 0.05% (220nm NaI, 340nm NaNO2).
In addition to a range of built-in range and measurement modes such as photometry mode, time scan and wavelength scan the Halo DB-20 features dual halogen tungsten and deuterium lamps typically found in higher end, analytical spectrophotometers.
The Halo DB-20 wavelength range is 190 to 1100nm.
Furthermore, the dual lamp system results in higher accuracy then corresponding xenon lamps.
Lamp switching is automatic and selectable from a wavelength range of 325nm to 370nm and both lamps are long life.
The model also features a user friendly operation and information rich LCD display with an extra large 190x138mm, backlit LCD screen with adjustable brightness control displays a large array of data also in graphical format.
The seamless and chemical resistant keypad is designed for easy and quick selection of navigation and function features while protecting against any laboratory spills.
Other unique features include the 'go to WL' short cut key to allow direct input of a new wavelength into an existing measurement.
The final model in the range is the next generation Halo DB-30 double beam spectrophotometer which claims superb perrformance characteristics for applications demanding the utmost sensitivity by combining higher signal to noise ratio with minimal stray light.
This warrants the 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.
As well as the features of the DB-20 above it also features exceptionally low stray light, improved spectral features such as The asymmetric monochromator with long focal length results in improved sensitivity.
Furthermore, up to six slit widths are selectable and switchable with the highest achievable resolution of 0.1nm) thus allowing for the optimisation of different applications.
