Specifications include, but are not limited to: This material shall be used in the dewatering of alum sludgeproduced from the flocculation process involving aluminumsulfate and/orpolyaluminum chloride in a municipal water treatment plant. This polymer shall be a high molecular weight (relative to other such polymeric materials) non-ionic/anionic material supplied in dry granular form, and certified to NSF/ANSI Standard 60 by an ANSI-Accredited third party certifier. Certification shall be returned with the bid form.Solubility of the polymer shall be at least 0.5% (weight percent). Material which the bidder proposes to furnish will not be considered for award unless the material has been previously demonstrated to the Manchester Water Works which then deemed the material to be of equal or greater dewatering effectiveness, on a pound for pound basis, than polymers it currently has in use.The current polymer in use is CLARIFLOC A-3333Pas manufactured by POLYDYNE. Information shall be provided on all material bid specifying generic polymer name & company of manufacturer. All available technical data on this polymer and certification for use in drinking water shall be affixed to this bid.