Water samplers from Grainger include bailer retriever, disposable bailer, reusable pouches, van-dorn-style bottle, water sampler, and weighted disposable bailer. A one-liter sampler of clear acrylic furnished with a 20 meter calibrated line and a lead collar assures rapid descent and minimal drift. A brass messenger triggers a release mechanism to seal the sample chamber with two fitted rubber plungers at the desired sampling depth.