Entwickeln von Referenzreihen im Versuch
Instrument einer auf die Beziehung von Probe und Kontext ausgerichteten Erkenntnishaltung
The quality of plants and foods was investigated by sensitive crystallisation (Graf 2001, Knijpenga 2001). Reference series are essential for qualitative assessments with this method. Crystallisation conditions for optimal picture development specific to the sample were obtained with the help of primary reference series resulting from changing temperature, relative humidity and concentration conditions. In these, the „parameter measured“ is the polymorphism of the crystallisation picture. Secondary reference series produced by varying the growing conditions, such as soil composition, sampling date etc., provide a distinct extension of the method to the context of life from which the sample originates. As some influences on plant development are not known in advance, secondary reference series may be developed directly in the investigation itself. Combining all reference series produces a field of experimentation from whose higher perspective the individual tests can be reexamined. This procedure makes it possible not only to include the particular context in the assessment of the sample but also to assess the context itself.