Malt intended for use in beer brewing or elsewhere in the food industry
After boiling for two hours on a reflux condenser, the wort is clarified using membrane filtration. The color is measured with a spectrophotometer.
Suitable for analysis of all (laboratory) wort samples
Atomic emission spectroscopy, also known as optical emission spectroscopy, in conjunction with inductively coupled plasma (ICP-AES or ICP-OES) is a technique used to determine and measure elements based on the phenomenon of atomic emission. The solutions to be analyzed are nebulized and the resulting aerosol is transported with the help of a carrier gas into an inductively coupled plasma (ICP). There, the elements are excited to a higher energy state, causing emissions. The spectrometer separates these emissions into individual wavelengths, and the intensities of the spectral lines of the element are measured with detectors (photomultipliers). A qualitative measurement is possible by calibrating the instrument with reference solutions, whereby a linear relationship exists over a broad range (generally several orders of magnitude) between the intensities of the emission lines (spectra) and the concentrations of the elements.
This method describes how to determine the potassium content of water using atomic emission spectrometry.
This method describes how to determine the iron content of water using atomic emission spectrometry.
Refer to W-000.17.210 - Calcium in Wasser, Bestimmung mittels ICP-OES (Principle)
The method describes how to determine the manganese content of water by atomic emission spectrometry.
Refer to W-000.17.210 Calcium in Water, Determination Using Atomic Emission Spectrometry (ICP-AES) (Principle)
Cloudy beers
The shelf-life test involves direct incubation of the untreated, sealed sample with accompanying visual inspection of the biological states of a beverage (slime formation, creamy skin, agglomerates) and a final microscopic analysis.