A Sequential Analyzer allows for automated analysis of a large number of samples using colorimetric or enzymatic reactions. Each sample is first transferred into a transparent cuvette where the reaction will take place. There are several hundred cuvettes arranged in a circle, known as the reaction tray. Next, the instrument combines reagents with the sample inside the cuvette to start the reaction. The reaction is monitored by a spectrophotometer, which measures the amount of light absorbed by the sample in the cuvette. The concentration of various analytes is calculated from the amount of light absorbed. This method of analysis is commonly used for measuring the concentration of glucose + fructose, acetic acid, malic acid, tartaric acid, and ammonia.
One of several organic acids in wine, citric acid can be used to adjust acidity. Citric acid may be consumed by lactic acid bacteria and converted into diacetyl. Citric acid testing is often performed to meet regulatory or export requirements.
We achieve economies of scale here at ETS based on the volume of samples
processed at a given time. As a consequence we are pleased to pass these
savings on to our customers, offering discounts for multiple sample
submissions. These discounts apply only to samples submitted at the same