WaterMark Vertical Polycarbonate Water Bottle with Case, 2.2 Liter For free-flushing and “in-series” deployments, this vertical bottle collects water samples at any depth. Messenger-activated release mechanism has integral cable clamps allowing samplers to be easily attached to any point on line. Constructed of clear polycarbonate, polyethylene and silicone, this bottle is EPA approved for “ultra-clean” analysis of water, including trace metals and organics. Unit includes: 2.2 liter vertical bottle, 20.0m nylon cord, line reel, 250g solid bronze messenger, and plastic carrying case.