Collect water samples at any depth without exposing them to light during retrieval. Horizontal bottles are specifically designed for thin-layer stratification and near bottom studies. Messenger-activated release mechanism closes a single sampler on the end of a line. Constructed from opaque (gray Schedule 80) PVC, polyethylene, and silicone, this bottle is intended for general physical, chemical, and biological water analysis (excluding trace metals and organics). Unit includes: horizontal water bottle, 20.0m nylon cord, line reel, and 250g solid bronze messenger and plastic carrying case.Forestry Suppliers, Inc.