Most sensitive (9,01pg/ml) colorimetric ELISA for monitoring residual contamination.

For the quantitative determination of residual protein A contamination in protein A purified IgG preparations from any species.

The Protein A EIA kit is a colorimetric immunometric enzyme immunoassay kit with results in < 3 hours. Absorbance is read at 450 nm. Ultra-sensitive quantification (< 1 ppm) of Protein A residuals in purified humanized monoclonal antibody preparations. This kit recognizes four different Protein A constructs.