The Model 428 is a low cost disposable bailer, made of translucent high density polyethylene (HDPE) that holds more than one litre of sample. The rigid body will not bend. The PVC check ball is secured in the nozzle so that it will not roll to the other end of the tube. The top and bottom of the bailer are both tapered, to prevent hangups in the well. The translucent body allows the sample to be checked visually for water or product. A regular sample release device is included and a low flow sample release device is optional.