EVAS Absorption Probes
Applications include:
Alcohol content in beer/wine/liquors
Water content in ethanol
Ethanol content in gasoline
Turbidity-blind absorption measurements
The EVAS evanescent wave absorption sensor is an extended ATR probe, which is 10-100 times more sensitive than the standard fiber optic ATR probe. It consists of a sapphire fiber wound around a vertical PTFE shaft. The ends of the fiber are tapered up to facilitiate the coupling of light into and out of the probe. The design permits the adjustment of the interaction length to accommodate the optimal analysis of spectral features. The EVAS is ideally suited for measurements in turbid fluids.
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