OMA Consulting Protocol Review: OMACON-2019-2

How is the analysis performed?

Any of the processes performed in the BIOMILK 300 (activation, calibration, analysis, etc.) comprise two different parts.

The first phase is when the device records the electricity signal that circulates in the electrochemical cell (establishing the target) as soon as the process begin (ADJUSTING REFERENCE), when the measurement cuvette is only filled with Measurement Solution. The second phase (MEASURING) begins with the addition of the Calibration Standard or of the sample to the measurement cuvette, once the device has issued a sound signal, indicating that the target of each measurement has been established correctly.

This addition increases the electricity current in the cell due to the redox reaction sequence that occurs on the Biotest surface.

The device uses the difference in intensities recorded before and after the addition to calculate a current intensity variation that correlates with the lactose concentration by means of a prior calibration of the device. BIOMILK 300 LAC is a BIOLAN application to stablish quantitatively the lactose level in low lactose or lactose free dairy products by means of three different calibration ranges:

Table 1: Specifications of the Measurement Ranges. 0-200 mg/l 0-2 g/l

0-6 g/l

15%

15%

15%

Error

Quantitative Range

50-200 mg/l

0,2-2 g/l

0,5-6 g/l

50 mg/l

200 mg/l

0,5 g/l

LOQ

NO

1/10

1/10

Dilution

5