Suitable for analysis of all (laboratory) wort samples
Zinc in wort is measured using the AAS technique by directly aspirating the diluted sample into an acetylene oxygen flame or through electrothermal atomization; the measurement is made at 213.9 nm.
Suitable for Congress mash
Wort is produced according to the Congress mash method (fine grind), and then the nitrogen content of the wort is determined.
The method describes the analysis for optically evaluating the (Congress) mash.
Malt intended for use in beer brewing or elsewhere in the food industry
Optical evaluation of the appearance of (Congress) wort
Malt intended for use in beer brewing or elsewhere in the food industry
The value of pH is defined as the negative decadal logarithm of the concentration of hydrogen, or more precisely, hydronium ions:
\(\text{ pH }=-\log{ c_{ H_{ 3 }O^{ + } } }\)
The pH scale, ranging from 0–14, is based on the dissociation equilibrium.
The pH value of a liquid is commonly determined with a pH measurement device consisting of the measurement electrode (glass) and the reference electrode (e.g., silver/silver chloride electrode), which is connected to a signal amplifier and a display instrument. The device is calibrated using standard buffer solutions.
The pH reading displayed is determined through the difference in electrical potential between the reference solution in the electrode and the solution being measured.
Generally, a pH measurement system is used, in which the measurement and reference electrodes are combined to form a single unit.
Malt intended for use in beer brewing or elsewhere in the food industry
The determination of the color of the Congress wort is carried out by measuring the absorbance of the wort at 430 nm and then multiplying the value by a specified factor.
This method describes the determination of color of (Congress) wort using color discs.
Malt intended for use in beer brewing or elsewhere in the food industry
The determination of the color of the Congress wort is carried out under defined lighting conditions through a visual comparison of the wort color with the appropriate color discs. Please note that several individuals should perform the color measurement if possible.