Chemchek's Kinetic Phosphorescence Analyzer (KPA) is the superior analyzer for trace soluble Uranium. The KPA-11 instrument provides high levels of sensitivity, with detection limits in the parts-per-trillion range for water. Kinetic analysis of luminescence corrects results for matrix quenching; therefore, most real-world samples are analyzed directly. The instrument's speed, and selectivity, significantly reduce the amount of work and time to prepare and analyze samples. These characteristics make the KPA the instrument of choice for the routine analytical work performed in laboratories addressing uranium assay.

The KPA is used for assay of lanthanides as well.