A criterion for the visual and manual inspection of whole hops is to evaluate the shape and development of the hop cone.
Points to be awarded: 1−15
Whole hops intended for use in beer brewing or elsewhere in the food industry
Evaluation of the appearance of hop cones is performed through visual and manual inspection.
Determination of the density of a liquid using an aræometer (Archimedes' principle)
beer, beer-based beverages, NAB, beverages, liquid
Determining the density by using the buoyancy of a hollow body of constant volume requires an aræometer (hydrometer) with a suitable measurement range. The buoyancy corresponds to the weight of the water displaced by the submerged hollow body and is directly proportional to the density of the displaced fluid.
Determination/calculation of original gravity, alcohol and real extract content after distillation of beer, beer-based beverages or beverages.
Beer, beer-based beverages, beverages
After distillation of the sample, the original gravity, alcohol and real extract content of the beer in beer-based beverages or other beverages can be determined from the densities of the distillate and residue.
beer, beer-based beverages, beverages
The refraction of a light beam as it passes from an optically less dense (sample liquid) to an optically denser medium (prism) is a function of concentration (alcohol/extract), temperature and wavelength. The density of the test liquid is a function of the concentrations of alcohol and extract content. Therefore, from the refractive index (or alternatively the refractive index nD20 and the density or the SGA20/20, the real extract), the alcohol and original gravity can be determined from nomograms or using regression equations.