Block Engineering Inc. announced that it has signed a Collaborative Agreement with Pfizer Inc. to develop a QCL-based system for real-time, noncontact Cleaning Verification of vessels during pharmaceutical manufacturing. The technology is based on Block's commercially available LaserScan (TM) Analyzer, which will be tailored to address the specific requirements of this application. Accurate Cleaning Verification of vessels has a significant impact in pharmaceutical manufacturing, due to the potential health risks of cross-contamination between products.