We offer a comprehensive menu of well-validated, convenient to use microtiter plate ELISA methods to detect Host Cell Proteins from specific recombinant expression systems and bioprocess contaminants used in culture media as well as transgenic expression systems in goats and cattle. We develop and routinely manufacture, by cGMP methods,  ELISA and Western Blot kits to contaminants specific to more than 50 different expression systems. Our extensive list of ancillary reagents is useful in developing and validating your product and process-specific assays.