Abstract: A device for concentrating and preserving samples for subsequent analysis, wherein the samples include but are not limited to, biological samples, environmental samples, industrial samples, and the like. The present disclosure further includes a method for utilizing the device for containment, concentration, and preservation of the sample until analysis can take place. The disclosed device is simple to operate and can function without auxiliary equipment and/or sources of power making it particularly suitable for use in locations distanced and isolated from analytical facilities.