noun
qualitative analysis
Technical term used in chemistry and related fields to identify components of a substance, as opposed to quantitative analysis (定量分析).
この実験では、まず定性分析を行って成分を特定します。
In this experiment, we first perform qualitative analysis to identify the components.
定量分析 is quantitative analysis, which measures the amounts of components, while 定性分析 identifies what components are present.
Compound of 定性 (qualitative) and 分析 (analysis). The term is a direct translation of the English 'qualitative analysis' and is used in scientific contexts.