Disclosed herein is a device and methods for the rapid chemiluminescence assay of surfaces to detect the presence of microbial contamination. The device and methods are suitable for use by untrained personnel under the relatively harsh and variable conditions found in the field, for example in fast food...http://www.google.com.au/patents/US6548018?utm_source=gb-gplus-sharePatent US6548018 - Apparatus for chemiluminescent assays