White Water Associates laboratory provides some printable forms for your use in sampling, ordering bottles for your project, and directions for sample collection. Chain of Custody (COC) is the form used to accompany your samples when they are delivered to the laboratory. This form gives the lab your client information as well as identification of the sample type, description, sampling date and time, and what tests you want run on the sample. Sampling Instructions and Common Drinking Water Containers Example COC for Public Clients Example COC for Private Clients COC Print-only Version: Print this version and fill by hand. COC Version to Print or Fill on Computer: Same as the previous version, but can be filled on your computer. Directions for Filling Chain of Custody Form Coliform Sampling: A Visual Step-by-Step Instruction Sampling Directions for Lead & Copper Tests Sampling Directions for Methanol Preserved Soil Samples Well Disinfection: What to do if bacteria is detected in your well