A Sensitive Method for Fast Detecting Microbial Contamination has been developed by using electro-luminescence. This method can be used for detecting low contamination of microorganisms in liquid samples, in particular, in drinks like milk, beer and juice, in water and in medical remedies. This method can be used in all steps of industrial production, and the equipment can be linked directly to production lines for monitoring qualities of the products. The sensitivity of this method can get as high as detecting about 100 bacteria/ml. The advantage of this method is its simplicity in technical manipulation, its rapines and its high sensitivity which is at least 100 times higher than that of normal colony methods.(1995 European patent applying and 1996 Chinese patent applying)

* Popp,F.A. and J.J.Chang (199510 18): Verfaheren Yum Nachweis Mikrobieller Infection (European patent 1ssued No:195 38 768.6)

* Chang J.J and F.A. Popp(19960528) Sensitive Method for Fast Detecting Microbial Contaminations ( Chinese Patent.Issued No.96105260.0)