driven, flow-through, dipper-type refrigerated composite samplers for process water, industrial waste and municipal raw sewage and effluent. The unique Sonford Sampling method... and accurate solution for any sampling need. Sonford Samplers can be found taking composite flow, time, and "on-demand" samples in wastewater treatment facilities and industrial... applications of all sizes and environments. Sonford Samplers automatically collect and refrigerate composite samples by a pneumatic cylinder and open cup to maintain accuracy...