A method for removing a contaminant from a fluid, the method comprising contacting the fluid comprising a contaminant at a first concentration with a purification medium for a time sufficient for binding of the contaminant to the medium to provide and effluent comprising the contaminant at a second concentration, wherein the second concentration is lower than the first concentration. The golf ball is stylish and has a high-quality feel, yet also has an excellent scuff resistance. The particular inserts chosen depend on the desired sample preparation or assay to be carried out. The communication module sends the data packet according to a contact information to report the coin feeding status of the coin-operated device to a system user. A dedicated, specifically adapted conversion program generates the clump header file, the inline tree data structure, and the one or more auxiliary data structures. The blade body surround and the blade body jointly form a generally cylindrical-shaped structure when the blade body is in a seated position within the slot.