A.A.S Spectrophotometers
The VG411 Hydride generator
Overview
The VG 411 provides enhanced sensitivities, reduced interferences and extremely low detection limits for the determination of sub-trace levels of hydride-forming metals. Aurora's revolutionary design of the gas liquid separator allows for optimum performances for both hydride and cold vapor determinations. The three mixing sections of the reaction/mixing manifold gives the operator limitless options. The instrument has been designed to work with Aurora AI 500 and AI 1200 atomic absorption spectrophotometers, but it is also compatible with AAS, AFS, ICP-AES, and ICP-MS instruments offered by other manufacturers.
Revolutionary Gas/Liquid Separator Design
For metal hydride determinations the volume can be increased in order to eliminate pressure fluctuations, thus enhancing the sensitivity of the measurement.
For mercury determinations, concentrated sulphuric acid can be safely used as the drying agent thus efficiently removing water droplets and vapor with negligible loss of analyte, while at the same time reducing the dead volume. The net result is shortened analysis times combined with unmatched sensitivity.
Other Features
The reaction/mixing manifold of the VG 411 includes three mixing sections to provide the operator with near limitless flexibility. This enables convenient, on-line addition of any reagents required for acidity adjustment, pre-reduction/oxidation, or masking of interferents.
Two high quality, precision peristaltic pumps provide dependably consistent pump speeds ensuring reproducible measurements sample after sample.
Precision
The following graph shows the RSD for ten replicate runs of 15ng/ml.
