Cecil Instruments - PowerStream: Integration


Integration

Adept

PowerStream

Accurate Gradient Formation

The quality of gradient formation by the Quaternary and Binary pump modules of the Q-Adept series is shown in the screen shown below.

The display shows a gradient formed in 10% steps, from 0-100%. The solvents used were 10% Methanol in Water and 0.1% Acetone in 10% Methanol in Water. The measuring wavelength was 263nm. The accuracy of the steps indicates the excellent performance of the low pressure mixing pump systems. The display was produced by PowerStream software operating in Microsoft Vista. Click for full-size image.

Long Term Gradient Precision

Below is shown the display of gradient steps shown is the result of overlapping 4 gradients generated over a period of 2 days. The steps are 2, 2, 1, 1, 2, 2 % of Acetone in Water and shows the excellent reproducibility of results over an extended period. The solvents used to form the gradient were 10% Methanol in Water and 0.6% Acetone in Water, measured at 263nm. Click for full-size image.

The Advantages of WaveQuest

WaveQuest is a very advanced UV/Visible DAD detector, providing large time and cost savings over normal photodiode array detectors.

The ultra low drift of this detector compared with the very drift prone photo diode detectors means that only one detector -WaveQuest – is needed for both wavelength scanning and UV-Visible detection with the same stability as the best UV-Visible variable wavelength detectors.

Using it for both scanning and monitoring is therefore absolutely normal. Only one detector is needed for both tasks at the highest possible levels of performance. Spectral storage, library search of spectra and spectral match factors are all provided.

The second advantage, over normal photo diode array detectors, is that chromatograms may be both scanned and quantified at the same time, reducing the number of chromatography runs needed to one and not the usual two, thereby reducing experimental time by at least two.

Integration

Automatic Baseline
Manual Baseline
Drop Line
Sloping Baseline
Tangential Skimming
Exponential Skimming
Selectable Peak Detection
Sensitivity

Help Screens

Complete Operation Guide