Nalgene Nunc International of Rochester, N.Y., has launched its I-CHEM Security-Snap BacT Bottles that meet all the requirements for microbiology sample containers as specified by the current edition of the EPA Manual for the Certification of Laboratories Analyzing Drinking Water, and are excellent for all types of bacteriological sampling, including coliform testing. Manufactured of non-toxic polypropylene, the bottles are contact-clear, and non-autofluorescent for chromogenic/ fluorogenic substrate tests.